Applied Organometallic ChemistryThis is an RSS file. You can use it to subscribe to this data in your favourite RSS reader, such as GoogleReader, or to display this data on your own website or blog. Subscribe to this data using MyMedWorm.Subscribe to this data using GoogleReader.Subscribe to this data using Bloglines.Subscribe to this data using MyYahoo.

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An efficient MnCl2-catalyzed tandem acylation-cross-coupling reaction of o-halobenzoyl chloride with diorganyl magnesium compoundsEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
An efficient tandem cross-coupling reaction of o-chlorobenzoyl chloride with dialkyl and diaryl magnesium compounds in the presence of manganese (II) chloride was developed, which proceeds in good yield under mild conditions. Copyright © 2009 John Wiley & Sons, Ltd. (Source: Applied Organometallic Chemistry)
Source: Applied Organometallic Chemistry - November 6, 2009 Category: Chemistry Authors: Fengmin Zhang, Zhuangzhi Shi, Feng Chen, Yu Yuan Source Type: journals

Synthesis, structure and biological activity of triorganotin 1H-tetrazolyl-1-acetates: cyclic hexamer and linkage coordination polymersEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Reaction of 1H-tetrazolyl-1-acetic acid (CHN4CH2CO2H) with (R3Sn)2O or R3SnOH yields triorganotin 1H-tetrazolyl-1-acetates [CHN4CH2CO2SnR3, R = Ph (1), p-tolyl (2), cyclohexyl (3), n-Bu (4) and Et (5)]. 1H-tetrazolyl-1-acetates in these triorganotin derivatives display remarkably different coordination modes, depending on the properties of the organic substituents bonded to the tin atoms. Complex 1 displays a rare cyclohexameric structure by the assembly of the Sn[bond]N coordination bond, while complex 2 forms a linkage coordination polymer through the intermolecular Sn···N interactions. The structure of complex 3 is s...
Source: Applied Organometallic Chemistry - November 6, 2009 Category: Chemistry Authors: Yun-Fu Xie, Yang Yu, Zhi-Jin Fan, Lin Ma, Na Mi, Liang-Fu Tang Source Type: journals

Synthesis, characterization and anticancer activity of new palladacycles derived from chiral [alpha]-diiminesEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Optically pure [alpha]-diimines quantitatively obtained in solvent-free conditions starting from 2,3-butanedione and (S)-(-)-1-phenylethylamine and (S)-(-)-1-(4-methylphenyl)ethylamine, respectively, yielded the new chiral mono-Pd complexes 2a-b, which have been partly characterized by IR, 1H- and 13C-NMR spectroscopies along with MS-FAB+ spectrometry. The crystal and molecular structure for palladacycle 2a has been fully confirmed by single-crystal X-ray studies. Studies in vitro of 2a-b have displayed growth inhibition against different classes of cancer: leukemia (K-562 CML), colon cancer (HCT-15), breast cancer (MCF-7)...
Source: Applied Organometallic Chemistry - November 6, 2009 Category: Chemistry Authors: Sandra Cruz, Sylvain Bernès, Pankaj Sharma, Rosa Vazquez, Guadalupe Hernández, Roberto Portillo, René Gutiérrez Source Type: journals

Synthesis of lipophilic sila derivatives of N-acetylcysteineamide, a cell permeating thiolEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
N-acetyl-L-cysteine (L-NAC) is a potent antioxidant that can reduce levels of reactive oxygen species. N-acetyl-cysteine-amide, the amide form of L-NAC, has recently been reported to be more lipophilic and permeable through cell membranes than NAC, and to be able to traverse the blood-brain barrier. In this communication we report the synthesis and characterization of highly lipophilic sila-amide derivatives of L-NAC that may show enhanced cell penetration and bioavailability. Copyright © 2009 John Wiley & Sons, Ltd. (Source: Applied Organometallic Chemistry)
Source: Applied Organometallic Chemistry - November 6, 2009 Category: Chemistry Authors: Uzma I. Zakai, Galina Bikzhanova, Daryl Staveness, Stephen Gately, Robert West Source Type: journals

Preparation and cytotoxic properties of goethite-based nanoparticles covered with decyldimethyl(dimethylaminoethoxy) silane methiodideEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
The present work describes the synthesis, physico-chemical and biological properties of the first water-soluble goethite nanoparticles covered with biologically active components: oleic acid and cytotoxic decyldimethyl(dimethylaminoethoxy)silane methiodide. The structure of initial goethite nanoparticles synthesized was proved by XRD analysis and the rough estimation of nanoparticles core size gave the value of 8 nm. The size of colloidal water-soluble nanoparticles, determined by dynamic light scattering, was within 19-35 nm. Magnetic properties and cytotoxicity (against HT-1080 and MG-22A tumor cell lines) of the nanopar...
Source: Applied Organometallic Chemistry - November 6, 2009 Category: Chemistry Authors: Izolda Segal, Alla Zablotskaya, Edmunds Lukevics, Mikhail Maiorov, Dmitry Zablotsky, Elmars Blums, Anatoly Mishnev, Radostina Georgieva, Irina Shestakova, Anita Gulbe Source Type: journals

Highly efficient catalytic system for electrophilic amination of arylzinc reagentsEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
The effect of catalyst on the yield of amine in the amination of three classes of arylzinc reagents with acetone oxime O-tosylate was investigated. Since they allowed the preparation of arylamines in excellent yields in the presence of a minimum amount of copper (I) or copper (II) compounds, the catalytic systems using copper (I) or copper (II) combined with a P-, N- or S-donor ligand were revealed to be the best catalysts for the electrophilic amination of arylzinc reagents with acetone oxime O-tosylate in the presence of DMPU. Copyright © 2009 John Wiley & Sons, Ltd. (Source: Applied Organometallic Chemistry)
Source: Applied Organometallic Chemistry - November 6, 2009 Category: Chemistry Authors: Tahir Da[scedil]kapan, Selçuk Koca Source Type: journals

Homo- and heteropolynuclear copper(II) complexes containing a new diimine-dioxime ligand and 1,10-phenanthroline: synthesis, characterization, solvent-extraction studies, catalase-like functions and DNA cleavage abilitiesEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
A series of homo-, heterodinuclear and homotrinuclear copper(II) complexes containing a new Schiff base ligand and 1,10-phenanthroline were synthesized. Based on results of elemental analyses, FTIR, 1H- and 13C-NMR spectra, conductivity measurements and magnetic susceptibility measurements, the complexes had general compositions {[Cu(L)(H2O)M(phen)2](ClO4)2 [M = Cu(II), Mn(II), Co(II)]} and {[Cu3(L)2(H2O)2](ClO4)2}. The metal:L:phen ratio is 2:1:2 for the dinuclear copper(II) complexes and the metal:L ratio was 3:2 for the trinuclear copper(II) complex. The liquid-liquid extraction of various transition metal cations [Mn(I...
Source: Applied Organometallic Chemistry - October 23, 2009 Category: Chemistry Authors: Bülent Dede, [Idot]smail Özmen, Fatma Karipcin, Mustafa Cengiz Source Type: journals

Preparation and properties of polyhedral oligomeric silsesquioxane-polysiloxane copolymersEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
All siloxane-type siloxane-polyhedral oligomeric silsesquioxane [(HSiO3/2)8, T8H] copolymers were synthesized by the dehydrogenative condensation of T8H with diphenylsilanediol, tetraphenyldisiloxane-1,3-diol or silanol-terminated polydimethylsiloxanes in the presence of diethylhydroxylamine followed by trimethylsilylation. Coating films were prepared by spin-coating of the coating solutions prepared from the dehydrogenative condensation products. The hardness of the coating films was evaluated by a pencil hardness test and was found to increase up to 6H with increases in the curing temperature. Silica gels were prepared b...
Source: Applied Organometallic Chemistry - October 21, 2009 Category: Chemistry Authors: Takahiro Gunji, Takahiro Shioda, Koji Tsuchihira, Hiroyasu Seki, Takashi Kajiwara, Yoshimoto Abe Source Type: journals

Synthesis, X-ray powder structure analysis and biological properties of a mononuclear Cu(II) complex of N-2-hydroxyhippuric acidEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
A mononuclear copper (II) complex of N-2-hydroxyhippuric acid (2HHA), [Cu(HA)(H2O)2], has been synthesized and characterized by spectroscopic and X-ray powder diffraction studies. Crystal structure of [Cu(HA)(H2O)2] reveals a distorted square-pyramidal geometry around the metal center. The crystal packing in the complex exhibits a three-dimensional framework formed by intermolecular O[bond]; H···O and C[bond]H···O hydrogen bonds. Toxicity and antitumor properties of the complex have been studied in vivo. The complex, capable of depleting glutathione (GSH) at nontoxic doses, may be utilized to sensitize drug-resistant...
Source: Applied Organometallic Chemistry - October 20, 2009 Category: Chemistry Authors: Soumya Basu, Basab Chattopadhyay, A. Ganguly, P. Chakraborty, P. Roy Chowdhury, S. Samanta, M. Mukherjee, A. K. Mukherjee, S. K. Choudhuri Source Type: journals

Polyhedral oligomeric silsesquioxane-bound iminofullereneEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Polyhedral oligomeric silsesquioxane (POSS) cages containing an iminofullerene species are reported herein. Monosubstituted benzyl chloride POSS was synthesized, and subsequently reacted with sodium azide to form mono benzyl azide POSS. The azide was subsequently reacted with C60 in anhydrous, degassed toluene to yield the desired POSS iminofullerene compound. The prepared compounds were characterized by multinuclear NMR, electrospray mass spectrometry, elemental analysis, UV-vis, fluorescence and optical power limiting measurements. Copyright © 2009 John Wiley & Sons, Ltd. (Source: Applied Organometallic Chemistry)
Source: Applied Organometallic Chemistry - October 20, 2009 Category: Chemistry Authors: David J. Clarke, Janis G. Matisons, George P. Simon, Marek Samoc, Anna Samoc Source Type: journals

Accelerated Heck reaction using ortho-palladated complex with controlled microwave heatingEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Palladium-catalyzed Heck couplings utilizing [Pd{C6H2(CH2CH2NH2)-(OMe)2,3,4} (µ-Br)]2 palladacycle catalyst and microwave irradiation lead to formation of different coupling products. This complex is an active and efficient catalyst for the Heck reaction of aryl iodides, bromides and even less reactive chlorides. The cross-coupled products were produced in excellent yields. The reaction time was reduced from hours to minutes and full conversion was achieved under microwave irradiation. Copyright © 2009 John Wiley & Sons, Ltd. (Source: Applied Organometallic Chemistry)
Source: Applied Organometallic Chemistry - October 20, 2009 Category: Chemistry Authors: Abdol R. Hajipour, Kazem Karami, Azadeh Pirisedigh Source Type: journals

Asymmetric 1,4-conjugation addition of diethylzinc to cyclic enones catalyzed by a self-assembled copper complexEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
A new self-assembled catalyst system based on copper complex was developed for the 1,4-conjugation addition of diethyl zinc to cyclic enones. The self-assembled catalyst was readily prepared from (R)-[1,1[prime]]binaphthalenyl-2,2[prime]-diamine (1a), (L)-tryptophan (3f) and copper(I) chloride (CuCl). Several enones were found to be suitable substrates in the presence of the self-assembled copper catalyst [10 mol% (R)-1a, 10 mol% (L)-3f and 10 mol% CuCl] under optimized conditions. The desired products were afforded with high isolated yields (up to 98%) and moderate to good enantioselectivities (up to 80% ee) in mild condi...
Source: Applied Organometallic Chemistry - October 14, 2009 Category: Chemistry Authors: Shaohua Gou, Zhongbin Ye, Zhiyu Huang Source Type: journals

Edited by Armin Börner phosphorus ligands in asymmetric catalysis: synthesis and applications Wiley-VCH, 2008, 1546 pp. (hardcover) ISBN 978-3-527-31746-2Email this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
No Abstract. (Source: Applied Organometallic Chemistry)
Source: Applied Organometallic Chemistry - October 14, 2009 Category: Chemistry Authors: Deborah L. Dodds, Jason A. Gillespie, Arnald Grabulosa, Paul C. J. Kamer Source Type: journals

Palladium supported on polyether-functionalized mesoporous silica. Synthesis and application as catalyst for Heck coupling reactionEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
A new catalytic system based on Pd supported on polyether-functionalized mesoporous silica was prepared. This material was obtained by co-hydrolysis and polycondensation of tetraethylorthosilicate and a bis-silylated triblock copolymer P123 (Mw = 5800) followed by the decomposition of Pd(OAc)2 salt. We have shown that this material can be applied as powerful heterogeneous catalyst for the Heck coupling reaction. Copyright © 2009 John Wiley & Sons, Ltd. (Source: Applied Organometallic Chemistry)
Source: Applied Organometallic Chemistry - October 14, 2009 Category: Chemistry Authors: Anne Flore Grandsire, Coralie Laborde, Frédéric Lamaty, Ahmad Mehdi Source Type: journals

Synthesis of star-shaped molecules with pyrene-containing [pi]-conjugated units linked by an organosilicon coreEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Star-shaped molecules with pyrene-containing [pi]-conjugated units linked by an organosilicon core (Py3Si and Py3C) were prepared and their applications to thin-film transistors (TFTs) and photovoltaic cells were studied. Bottom-contact type TFTs with spin-coated films of the star-shaped compounds as the active layers were prepared and the field-effect mobility (µFET) and Ion/Ioff ratios were determined to be approximately 10-5 cm2 V-1 s-1 and 104, respectively. Photovoltaic properties of Py3Si and Py3C were studied in the cells, ITO-PEDOT-PSS-Py3Si or Py3C-PCBM-LiF-Al. Although the power conversion efficiency (PCE) of th...
Source: Applied Organometallic Chemistry - October 13, 2009 Category: Chemistry Authors: Joji Ohshita, Yosuke Hatanaka, Shigenori Matsui, Yousuke Ooyama, Yutaka Harima, Yoshihito Kunugi Source Type: journals

Accelerated ceramization of polymethylsilsesquioxane by aluminum- based filler reductantEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Polymethylsilsesquioxane (PMSQ), compounded with particles of Al2O3 (22-47 nm), micro size aluminum (30 µm) or nano size aluminum (50 nm) with a starting Al:Si molar ratio of 1.0, was prepared in a thick sheet form and pyrolyzed at various temperatures up to 1673 K to investigate the filler effect on the ceramization. By adjusting the concentrations of PMSQ, filler and cross-linking agent in ethanol, self-standing ceramic sheets were obtained after pyrolysis without fragmentation. The phases formed in each sheet during pyrolysis were identified by using X-ray diffraction patterns. The resulting micro structures were chara...
Source: Applied Organometallic Chemistry - October 13, 2009 Category: Chemistry Authors: Masaki Narisawa, Hiroyuki Kado, Hiroshi Mabuchi, Young-Wook Kim Source Type: journals

Iron-catalyzed efficient three-component allylation of imine in aqueous mediaEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Iron trichloride hexahydrate has proved to be a very effective catalyst for the three-component condensation of aromatic aldehydes, amines and allyltributylstannane, which produces high yields of homoallylic amines in water in the presence of surfactant SDS. Copyright © 2009 John Wiley & Sons, Ltd. (Source: Applied Organometallic Chemistry)
Source: Applied Organometallic Chemistry - October 8, 2009 Category: Chemistry Authors: Yu Yuan, Feng Chen, Dongbo Zhao Source Type: journals

A convenient synthesis of nanocrystalline chalcopyrite, CuFeS2 using single-source precursorsEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Nanocrystalline chalcopyrite (CuFeS2) have been synthesized using single-source precursors, CuL2 and Cu(LH)2Cl2 (where LH = monoacetylferrocene thiosemicarbazone) by pyrolysis and solvothermal decomposition methods. The nanocrystals were characterized by UV-visible spectroscopy, X-ray powder diffraction, transmission electron microscopy and energy dispersive X-ray analysis. The magnetic character was determined by the hysteresis loop. CuFeS2 nanocrystallites prepared by the pyrolysis of CuL2 and Cu(LH)2Cl2 have a cubic phase and rod-like morphology with diameters of about 18 and 15 nm, respectively, and lengths of about 19...
Source: Applied Organometallic Chemistry - October 8, 2009 Category: Chemistry Authors: Sujit D. Disale, Shivram S. Garje Source Type: journals

New route to synthesis of PVP-stabilized palladium(0) nanoclusters and their enhanced catalytic activity in Heck and Suzuki cross-coupling reactionsEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Herein we report a new method for the synthesis and characterization of PVP-stabilized palladium(0) nanoclusters and their enhanced catalytic activity in Suzuki coupling and Heck reactions of aryl bromides with phenylboronic acid and styrene, respectively, under mild conditions. The PVP-stabilized palladium(0) nanoclusters with a particle size of 4.5 ± 1.1 nm were prepared using a new method: refluxing a mixture of potassium tetrachloropalladate(II) and PVP in methanol at 80 °C for 1 h followed by reduction with sodium borohydride. Palladium(0) nanoclusters prepared in this way were stable in solution for weeks, could be...
Source: Applied Organometallic Chemistry - October 7, 2009 Category: Chemistry Authors: Feyyaz Durap, Önder Metin, Murat Aydemir, Saim Özkar Source Type: journals

JOAN RIBAS GISPERT Coordination chemistry Wiley-VCH, 2008, 600 pp. (paperback) ISBN-10 3-527-31802-X ISBN-13 978-3-527-31802-5Email this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
No Abstract. (Source: Applied Organometallic Chemistry)
Source: Applied Organometallic Chemistry - September 30, 2009 Category: Chemistry Authors: Stephen Best Source Type: journals

Synthesis, characterization and hydroformylation activity of 7-azaindolate-bridged dinuclear rhodium(I)phosphines with pendant polar-groupsEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
New dinuclear Rh(I)-Phosphines of the types [Rh(µ-azi)(CO)(L)]2 (1,3-7) and [Rh(µ-azi)(L)]2 (8) with pendant polar groups, and a chealated mononuclear compound [Rh(azi-H)(CO)(L)] (2) (where azi = 7-azaindolate, L = polar phosphine) were isolated from the reaction of [Rh(µ-Cl)(CO)2]2 with 7-azaindolate followed by some polar mono- and bis-phosphines (L1-L8). A relationship between [Delta][delta]31P-NMR and [nu](CO) values was considered to define the impact of polar-groups on [sigma]-donor properties of the phosphines. These compounds were evaluated as catalyst precursors in the hydroformylation of 1-hexene and 1-dodecen...
Source: Applied Organometallic Chemistry - September 29, 2009 Category: Chemistry Authors: Chandra Sekhar Vasam, Sarangapani Modem, Shravankumar Kankala, Geeta Budige, Ravinder Vadde Source Type: journals

Silane reduction of onium saltsEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Novel redox initiators for cationic polymerizations were developed consisting of an onium salt together with a Si[bond]H functional silane or siloxane. The reduction of the onium salt by the silane is catalyzed by noble metal complexes or certain transition metal compounds and takes place spontaneously at room temperature. The redox reaction of the onium salt with the silane results in the liberation of a strong Brønsted acid that can be subsequently used to initiate cationic polymerizations. Typical onium salts that have been employed in these redox initiator systems are diaryliodonium salts, triarylsulfonium salts and S...
Source: Applied Organometallic Chemistry - September 29, 2009 Category: Chemistry Authors: James V. Crivello Source Type: journals

Synthesis of 4-substituted styrene compounds via palladium catalyzed Suzuki-Miyaura reaction using bidentate Schiff base ligandsEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Air-stable symmetric Schiff base have been synthesized and proved to be efficient ligands for Suzuki-Miyaura reaction between aryl bromides and arylboronic acids using PdCl2(CH3CN)2 as palladium source under aerobic conditions. The coupling reaction proceeded smoothly using N,N-bis(anthracen-9-ylmethylene)benzene-1,2-diamine (L7) as ligand to provide 4-substituted styrene compounds in good yields. Copyright © 2009 John Wiley & Sons, Ltd. (Source: Applied Organometallic Chemistry)
Source: Applied Organometallic Chemistry - September 16, 2009 Category: Chemistry Authors: Yan Liu, Jinqu Wang Source Type: journals

Synthesis and cytotoxic activity of new 2-[(3-aminopropyl)dimethylsilyl]-5-triethylsilylfuransEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Highly cytotoxic 3-aminopropyl derivatives of 5-triethylsilyl-2-dimethylsilylfuran (LC501-3 µg ml-1) have been prepared by hydrosilylation of heterocyclic N-allylamines with corresponding hydrosilane in the presence of Speier's catalyst. The influence of the amine structure on the cytotoxicity has been investigated. Copyright © 2009 John Wiley & Sons, Ltd. (Source: Applied Organometallic Chemistry)
Source: Applied Organometallic Chemistry - September 15, 2009 Category: Chemistry Authors: Luba Ignatovich, Velta Muravenko, Irina Shestakova, Ilona Domrachova, Juris Popelis, Edmunds Lukevics Source Type: journals

Biphasic oligomerization of ethylene with nickel complexes immobilized in organochloroaluminate ionic liquidsEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Ethylene was selectively oligomerized by nickel complexes such as (PPh3)2NiBr2 and (PPh3)2NiCl2 immobilized in chloroaluminate ionic liquid in biphasic catalytic reactions. The influence of reaction parameters such as reaction media, reaction temperature and Et2AlCl:Ni molar ratio was also evaluated. Turnover frequency up to 24000 mol C2H4/(mol Ni h) was achieved under mild reaction conditions (0.5 atm and 40 °C). GC-MS analyses showed that the obtained oligomers completely consist of C4 and C6. The olefinic products can be easily separated from the catalytic ionic liquid phase by simple decantation, and the nickel cataly...
Source: Applied Organometallic Chemistry - September 15, 2009 Category: Chemistry Authors: Lixia Pei, Xianmei Liu, Haiyang Gao, Qing Wu Source Type: journals

Synthesis and characterization of transition metal complexes of thiophene-2-methylamine: X-ray crystal structure of palladium (II) and platinum (II) complexes and use of palladium(II) complexes as pre-catalyst in Heck and Suzuki cross-coupling reactionsEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
The reactions of thiophene-2-(N-diphenylphosphino)methylamine, Ph2PNHCH2-C4H3S, 1 and thiophene-2-[N,N-bis(diphenylphosphino)methylamine], (Ph2P)2NCH2-C4H3S, 2, with MCl2(cod) (M = Pd, Pt; cod = 1,5-cyclooctadiene) or [Cu(CH3CN)4]PF6 yields the new complexes [M(Ph2PNHCH2-C4H3S)2Cl2], M = Pd 1a, Pt 1b, [Cu(Ph2PNHCH2-C4H3S)4]PF6, 1c, and [M(Ph2P)2NCH2-C4H3S)Cl2], M = Pd 2a, Pt 2b, {Cu[(Ph2P)2NCH2-C4H3S]2}PF6, 2c, respectively. The new compounds were isolated as analytically pure crystalline solids and characterized by 31P-, 13C-, 1H-NMR and IR spectroscopy and elemental analysis. Furthermore, the solid-state molecular struct...
Source: Applied Organometallic Chemistry - September 15, 2009 Category: Chemistry Authors: Murat Aydemir, Ak[inodot]n Baysal, Feyyaz Durap, Bahattin Gümgüm, Saim Özkar, Leyla Tatar Y[inodot]ld[inodot]r[inodot]m Source Type: journals

Synthesis, characterization and DNA binding and photocleavage studies of [Ru(bpy)2BDPPZ]2+, [Ru(dmb)2BDPPZ]2+ and [Ru(phen)2BDPPZ]2+ complexes and their antimicrobial activityEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Polypyridyl ligand 9a,13a-dihydro-4,5,9,14-tetraaza-benzo[b]triphenylene-11-yl)-phenyl-methanone (BDPPZ) and its complexes [Ru(bpy)2BDPPZ]2+, [Ru(dmb)2BDPPZ]2+ and [Ru(phen)2BDPPZ]2+ (where bpy = 2,2[prime]-bipyridine, dmb = 4,4[prime]-dimethyl-2,2[prime]-bipyridine, phen = 1,10-phenanthroline) have been synthesized and characterized by elemental analysis, IR, UV-vis, 1H-NMR, 13C-NMR and mass spectra. The DNA-binding properties of the complexes were investigated by absorption, emission, melting temperature and viscosity measurements. Experimental results indicate that the three complexes can intercalate into DNA base pairs...
Source: Applied Organometallic Chemistry - August 23, 2009 Category: Chemistry Authors: K. Ashwini Kumar, Kotha Laxma Reddy, S. Vidhisha, S. Satyanarayana Source Type: journals

Synthesis, structure and muscarinic agonist activity of substituted N-(silatran-1-ylmethyl)acetamidesEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Substituted N-(silatran-1-ylmethyl)acetamides, N-methyl-N-[1-(3[prime],7[prime],10[prime]-trimethylsilatran-1-yl)methyl]acetamide (2a) and N-(2-hydroxyethyl)-N-[1-(3[prime],7[prime],10[prime]-trimethylsilatran-1-yl)methyl]acetamide (2b) were prepared by the reactions of triisopropanolamine with N-methyl-N-(trimethoxysilylmethyl)acetamide (1a) and 2,2-dimethoxy-4-acetyl-1-oxa-4-aza-2-silacyclohexane (1b), respectively. According to X-ray data, the structures of the silatrane moieties are superpositions of unsymmetrical and symmetrical stereoisomers. The O [rarr] Si coordination between the central atom and exocyclic substit...
Source: Applied Organometallic Chemistry - August 21, 2009 Category: Chemistry Authors: Vera G. Pukhalskaya, Eugeniya P. Kramarova, Larisa P. Kozaeva, Alexander A. Korlyukov, Alexander G. Shipov, Sergey Yu. Bylikin, Vadim V. Negrebetsky, Gennady V. Poryadin, Yuri I. Baukov Source Type: journals

Synthesis, structural characterization, biological activity and thermal study of tri- and diorganotin(IV) complexes of Schiff base derived from 2-aminomethylbenzimidazoleEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
This report deals with the synthesis and structural features of tri- and diorganotin(IV) complexes of the general formulae, RnSn(L)m [n = 3, m = 1, R = Me, n-Bu and Ph; n = 2, m = 2, R = Me, n-Bu, n-Oct and Ph; HL = Schiff base derived from the condensation of 2-aminomethylbenzimidazole (ambmz) and salicylaldehyde (abbreviated as HL or Hsal-ambmz)]. The newly synthesized complexes were characterized by elemental analysis, molar conductance, electronic, infrared, far-infrared, 1H NMR, 13C NMR, 119Sn NMR and 119Sn Mössbauer spectral studies. Thermal studies of all of the synthesized complexes were also carried out using the...
Source: Applied Organometallic Chemistry - August 18, 2009 Category: Chemistry Authors: Mala Nath, Pramendra Kumar Saini, Ashok Kumar Source Type: journals

Luminescent organo-polysiloxanes containing complexed lanthanide ionsEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
In this study, a type of polysiloxane with the ester as the functional side group was prepared via a hydrosilylation reaction. The functionalized polysiloxane was then allowed to complex with Tb3+ and Eu3+ ions. Fourier transform infrared, ultraviolet absorption spectra and 1H-NMR, 13C-NMR and 29Si-NMR spectra were used to confirm the modification. Differential scanning calorimetry and thermal gravity analysis were used to study the polysiloxane's thermal properties. The complexes' luminescence spectra were recorded, and narrow-width green and red emissions were achieved. Copyright © 2009 John Wiley & Sons, Ltd. (Source: ...
Source: Applied Organometallic Chemistry - August 17, 2009 Category: Chemistry Authors: Lei Liu, Haifeng Lu, Hua Wang, Yiling Bei, Shengyu Feng Source Type: journals

Rapid, highly efficient and chemoselective trimethylsilylation of alcohols and phenols with hexamethyldisilazane (HMDS) catalyzed by reusable electron-deficient tin(IV)porphyrinEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
In this paper, rapid and highly efficient trimethylsilylation of alcohols and phenols with hexamethyldisilazane (HMDS) in the presence of catalytic amounts of high-valent [SnIV(TPP)(OTf)2] is reported. This catalytic system catalyzes trimethylsilylation of primary, secondary and tertiary alcohols as well as phenols, and the corresponding TMS-ethers were obtained in high yields and short reaction times at room temperature. It is noteworthy that this method can be used for chemoselective silylation of primary alcohols in the presence of secondary and tertiary alcohols and phenols. The catalyst was reused several times withou...
Source: Applied Organometallic Chemistry - August 17, 2009 Category: Chemistry Authors: Majid Moghadam, Shahram Tangestaninejad, Valiollah Mirkhani, Iraj Mohammadpoor-Baltork, Shadab Gharaati Source Type: journals

Synthesis, structural characterization and electrochemical recognition of metal ions of two new ferrocenylhydrazone-based receptorsEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Two new ferrocenylhydrazone-based receptors FcL1 and FcL2 were prepared and the X-ray crystal structure of FcL1 was described. The electrochemical studies reveal that the receptor FcL1 is responsive to Hg2+ and Cr3+, whereas, receptor FcL2 only responsive to Hg2+. The maximum electrochemical shift of FcL1 for Cr3+ is about 56 mV. Copyright © 2009 John Wiley & Sons, Ltd. (Source: Applied Organometallic Chemistry)
Source: Applied Organometallic Chemistry - August 14, 2009 Category: Chemistry Authors: Chunjie Qiao, Jie Li, Yan Xu, Shuyan Guo, Xue Qi, Yaoting Fan Source Type: journals

Edited by K. Morokuma and D. Musaev Computational modeling for homogeneous and enzymatic catalysis: a knowledge-base for designing efficient catalysts Wiley-VCH, 2008, 398 pp. (hardover) ISBN 978-3-527-31843-8Email this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
No Abstract. (Source: Applied Organometallic Chemistry)
Source: Applied Organometallic Chemistry - August 10, 2009 Category: Chemistry Authors: Hans Martin Senn Source Type: journals

The conversion of an organometallic compound into an intercalated thin-layer amorphous structureEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
A thin alumina-hydrotalcite (Al-HT) film was fabricated from the synthesized boehmite and HT sol samples. The sols were a Newtonian fluid within 12 h of the sol synthesis and pseudo-plastic flow thereon. Co-precipitated HT demonstrated poorly crystallized periclase and spinel structures and apparent doublet peak of hydrotalcite at 2[thetas] = 39-44°, indicative of a disordered structure. The heated Al-HT sample demonstrated highly amorphous structure with single hydrotalcite peak but barely observed [gamma]-alumina and [gamma]-boehmite phases. The exfoliation of the spinel, gibbsite and periclase in the Al-HT was caused b...
Source: Applied Organometallic Chemistry - August 5, 2009 Category: Chemistry Authors: M. R. Othman, W. J. N. Fernando, J. Kim Source Type: journals

Synthesis of 2,4,6-trisubstituted naphthalenes via novel copper-promoted tandem coupling and intramolecular cyclizationEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
An unprecedented copper-promoted tandem coupling and intramolecular cyclization reaction is disclosed. This strategy offers a simple and promising method for accessing 2,4,6-trisubstituted naphthalenes. A reaction mechanism involving initial formation of diynes followed by a 6-exo-dig cyclization and subsequent rearrangement is proposed. Copyright © 2009 John Wiley & Sons, Ltd. (Source: Applied Organometallic Chemistry)
Source: Applied Organometallic Chemistry - July 24, 2009 Category: Chemistry Authors: Yuguang Wang, Bingchun Zhu, Qin Zhu Source Type: journals

Edited by László Kollár Modern carbonylation methods Wiley-VCH, 2008, 383 pp. (hardcover) ISBN 978-3-527-31896-4Email this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
No Abstract. (Source: Applied Organometallic Chemistry)
Source: Applied Organometallic Chemistry - July 23, 2009 Category: Chemistry Authors: D. Bradley, G. Williams Source Type: journals

Betti base-derived tetradentate ligand: synthesis and application in copper-catalyzed N-arylation of imidazolesEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Betti base-derived tetradentate ligand 2 has been successfully designed and synthesized through the condensation of Betti base with glyoxal. Its application in N-arylation of imidazoles has been investigated which opens a new field for application of Betti base derivatives in organic transformation. Copyright © 2009 John Wiley & Sons, Ltd. (Source: Applied Organometallic Chemistry)
Source: Applied Organometallic Chemistry - July 16, 2009 Category: Chemistry Authors: Bojie Weng, Jing-Hua Li Source Type: journals

Antibacterial, spectral and thermal aspects of drug based-Cu(II) mixed ligand complexesEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
The antibiotic agent clioquinol is well known for its drug design and coordinating ability towards metal ions. Copper(II) mixed-ligand complexes of clioquinol with various uninegative bidentate ligands were prepared. The structure of the synthesized complexes was characterized using elemental analyses, infrared spectra, 1H-NMR spectra, electronic spectra, magnetic measurements, FAB mass spectrum and thermo gravimetric analyses. The kinetic parameters such as order of reaction (n) and the energy of activation (Ea) are reported using the Freeman-Carroll method. The pre-exponential factor (A), the activation entropy ([Delta]S...
Source: Applied Organometallic Chemistry - July 16, 2009 Category: Chemistry Authors: G. J. Kharadi, K. D. Patel Source Type: journals

Water as green oxidant: a highly selective conversion of organosilanes to silanols with waterEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Selective hydrolytic oxidation of organohydrosilanes was achieved with water in the presence of Pt-nanoparticle catalyst. The selectivity of the process was established by NMR analysis. In addition, various Pt-based catalysts were screened to compare the activity and selectivity with Pt-nanoparticles catalysis. The method was equally applicable to hydrosilanes bearing unsaturated functional groups, which led to corresponding silanols under mild reaction conditions without formation of any side products. Pt-nanoparticle catalysis was studied in details using UV-vis, TEM and mercury poisoning experiments during the transform...
Source: Applied Organometallic Chemistry - July 16, 2009 Category: Chemistry Authors: Bhanu P. S. Chauhan, Alok Sarkar, Moni Chauhan, Abhishek Roka Source Type: journals

Direct coupling reaction between alcohols and allyltrimethylsilane catalyzed by phosphomolybdic acidEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Phosphomolybdic acid (PMA) is a simple and efficient catalyst for direct coupling reaction of alcohols with allyltrimethylsilane. Direct nucleophilic allylation of alcohol with allyltrimethylsilane proceeds in considerably good yield in the presence of catalytic amount of (0.5 mol %) PMA at room temperature. Copyright © 2009 John Wiley & Sons, Ltd. (Source: Applied Organometallic Chemistry)
Source: Applied Organometallic Chemistry - July 15, 2009 Category: Chemistry Authors: Santosh T. Kadam, Hanbin Lee, Sung Soo Kim Source Type: journals

Synthesis and characterization of some novel silicon esters and their application as lubricant base stock solutionEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
A series of functional organosilanes and their esters were synthesized by the hydrosilylation reaction of Si[bond]H group-bearing organosilicon derivatives with maleic anhydride using Speier's catalyst and their esterification with long-chain alcohols in the presence of stannous oxide. These products have been characterized using elemental analysis, FT-IR, 1H, 13C and 29Si NMR. Viscosity, density, pour point, flash point and tribological properties of these compounds have also been evaluated. These esters have a pour point of (Source: Applied Organometallic Chemistry)
Source: Applied Organometallic Chemistry - July 13, 2009 Category: Chemistry Authors: Kanak Saxena, C. S. Bisaria, A. K. Saxena Source Type: journals

By William R.Cullen Is arsenic an aphrodisiac? The sociochemistry of an element Royal Society of Chemistry, 2008, 412 pp. ISBN 0854043632, 9780854043637Email this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
No Abstract. (Source: Applied Organometallic Chemistry)
Source: Applied Organometallic Chemistry - July 9, 2009 Category: Chemistry Authors: C.F. Harrington Source Type: journals

Synthetic hydrotalcites from different routes and their application as catalysts and gas adsorbents: a reviewEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
In this paper, widely accepted methods of hydrotalcite preparation such as co-precipitation, urea hydrolysis, hydrothermal, sol-gel, microwave irradiation, steam activation and solvothermal have been selected and reviewed. Our review indicates that the nature of the divalent cations, the synthesis method, the calcination temperature and the nature of the interlayer species are determinant factors in shaping the surface properties of the layered double hydoxides. The basic strength of the surface base site and structural changes produced in the mixed oxides can be adjusted conveniently by varying the Al content during the s...
Source: Applied Organometallic Chemistry - July 7, 2009 Category: Chemistry Authors: M. R. Othman, Z. Helwani, Martunus, W. J. N. Fernando Source Type: journals

Organotin(IV) tryptophanylglycinates: potential non-steroidal antiinflammatory agents; crystal structure of dibutyltin(IV) tryptophanylglycinateEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Diorganotin(IV) derivatives of tryptophanylglycine (H2Trp-Gly) with general formula R2Sn(Trp-Gly), where R = Me, n-Bu, Ph and n-Oct, and triorganotin(IV) derivatives R[prime]3 Sn(HTrp-Gly) where R[prime] = Me, n-Bu and Ph, have been synthesized and structurally characterized in the 'solid state as well as in solution on the basis of various spectroscopic techniques, viz. FT-IR, multinuclear 1H, 13C and 119Sn NMR, 119Sn Mössbauer and single crystal X-ray diffraction. These investigations suggest that tryptophanylglycine in R2Sn(Trp-Gly) acts as dianionic tridentate coordinating through carboxylate oxygen [[bond]C(O)O-], am...
Source: Applied Organometallic Chemistry - July 6, 2009 Category: Chemistry Authors: Mala Nath, Hitendra Singh, Parvinder Kumar, Ashok Kumar, Xueqing Song, George Eng Source Type: journals

Synthesis, characterization and oxygen-sensing properties of a novel luminescent Cu(I) complexEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
A novel luminescent copper(I) complex with formula [Cu(PPh3)2(PIP)]BF4 (PPh3 = triphenyl phosphine, PIP = 2-phenyl-1H-imidazo[4,5-f][1,10]phenanthroline) has been synthesized and characterized by 1H NMR, IR, elemental analysis and X-ray crystal structure analysis. In solid state, it displays broad band emission upon excitation at [lambda] = 420 nm with the emission maximum locates at 551 nm. Its excited-state lifetime is in the microsecond time scale (3.02 µs); as a result, its emission intensity is sensitive to oxygen concentration and shows oxygen-sensing properties after being encapsulated into mesoporous silica MCM-41...
Source: Applied Organometallic Chemistry - June 26, 2009 Category: Chemistry Authors: Linfang Shi, Bin Li, Shaozhe Lu, Dongxia Zhu, Wenlian Li Source Type: journals

Mono-, bis- and tris-piperidine fused imidazolinium salts: their in situ catalytic applications for C[bond]C bond formation in aqueous solutionsEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
The 1,5,6,7,8,8a-hexahydroimidazo[1,5-a]pyridine, 3, was quaternized with 2-(bromomethyl-1,3,5-trimethylbenzene, 1,4-bis(bromomethyl)-2,3,5,6-tetramethylbenzene, 2,4-bis(bromomethyl)-1,3,5-trimethylbenzene, 1,3,5-tris(bromomethyl)-2,4,6-trimethylbenzene and 1,3,5-tris(bromomethyl)-2,4,6-triethylbenzene to obtain mono-, bis- and tris-imidazolinium salts (4-7) which were characterized by elemental analysis and NMR spectroscopy. In order to understand the effects of these changes on the N-substituent and how they translate to catalytic activity, these new salts (4-7) with Pd(OAc)2 were applied as in situ catalysts for Suzuki-...
Source: Applied Organometallic Chemistry - June 24, 2009 Category: Chemistry Authors: Hayati Türkmen, Rahime Can, Bekir Çetinkaya Source Type: journals

Edited by Antonio Violante, Pan Ming Huang, Geoffrey M. Gadd Biophysico-chemical processes of heavy metals and metalloids in soil environments Wiley, 2008, 658 pp. (hardcover) ISBN 978-0-471-73778-0Email this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
No Abstract. (Source: Applied Organometallic Chemistry)
Source: Applied Organometallic Chemistry - June 23, 2009 Category: Chemistry Authors: Andrew A. Meharg Source Type: journals

BY DIETER REHDER Bioinorganic vanadium chemistry John Wiley & Sons/Wiley-Blackwell, 2008, 224 pp. (paperback), (hardcover) ISBN 978-0-470-06516-7, 978-0-470-06509-9Email this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
No Abstract. (Source: Applied Organometallic Chemistry)
Source: Applied Organometallic Chemistry - June 22, 2009 Category: Chemistry Authors: Carola Schulzke Source Type: journals

EDITED BY PETR ST[Ecaron]PNI[Ccaron]KA Ferrocenes: ligands, materials and biomolecules John Wiley & Sons/Wiley-Blackwell, 2008, 670 pp. ISBN 978-0-470-03585-6 (hardcover)Email this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
No Abstract. (Source: Applied Organometallic Chemistry)
Source: Applied Organometallic Chemistry - June 22, 2009 Category: Chemistry Authors: Richard Broene Source Type: journals

Aminophosphines: their chemistry and role as ligands and synthonsEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
In recent years, research in organophosphorus chemistry has mainly focused in designing newer and better phosphorus ligands for synthesizing novel metal complexes with improved catalytic activities. Aminophosphines [tricoordinate phosphorus(III)-nitrogen systems] are considered as versatile compounds owing to the presence of nitrogen centres which, in principle, can influence additional reactivity features. They are quite sensitive to air and moisture due to the presence of polar P[bond]N bond(s). In spite of this, research in aminophosphine chemistry is gaining momentum day-by-day and this is due mainly to one reason: the...
Source: Applied Organometallic Chemistry - June 21, 2009 Category: Chemistry Authors: Janarthanan Gopalakrishnan Source Type: journals