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TABLE OF CONTENTS
Volume 19 Issue 9 , Pages 997 - 1072 (September 2005)
Materials, Nanoscience and Catalysis
Electrochemically reduced tungsten-based active species as catalysts for metathesis-related reactions: ring-opening metathesis copolymerization of cyclopentene with cyclooctene (p 997-1001)
Solmazarabulut, Sevil Çetinkaya, Yavuz 
mamo
lu
Published Online: Jul 20 2005 7:19AM
DOI: 10.1002/aoc.921
The ring-opened metathesis copolymerization of cyclopentene with cyclooctene by an electrochemically generated WCl6-based catalyst has been prepared and 13C NMR spectroscopy used to analyse in detail the nature of the homo- and hetero-dyad units. | |
Synthesis and characterization of zinc bis(O-isopropylxanthate) as a single-source chemical vapor deposition precursor for ZnS (p 1002-1009)
Davide Barreca, Alberto Gasparotto, Cinzia Maragno, Roberta Seraglia, Eugenio Tondello, Alfonso Venzo, Venkatarishnan, Helmut Bertagnolli
Published Online: Jul 20 2005 7:19AM
DOI: 10.1002/aoc.948
Zn(O-iPrXan)2 was synthesized and characterized by extended X-ray absorption fine structure, Raman, FT-IR, UV-Vis optical absorption, 1H and 13C NMR, thermogravimetric analysis, differential scanning calorimetry and mass spectrometry. The results obtained allow assessment of its suitability as a single-source precursor for the chemical vapor deposition of ZnS thin films by its clean decomposition pattern and the similarity of its core architecture to that of crystalline ZnS. | |
Synthesis and structures of the chelating diamido zirconium and hafnium compounds (p 1010-1014)
Junsheng Hao, Xuehong Wei, Shuping Huang, Jianping Guo, Diansheng Liu
Published Online: Jul 29 2005 11:45AM
DOI: 10.1002/aoc.950
Three chelating diamide lithium, zirconium and hafnium complexes, [Me2Si{NLiCH(Me)Ph}2]2 (1), [{Me2Si{NCH(CH3)Ph}2}ZrCl2LiCl- (OEt2)2]2 (2) and [{Me2Si{NCH(CH3)Ph}2}HfCl2LiCl(OEt2)2]2 (3), were synthesized and their multinuclear magnetic resonance spectra measured and X-ray structures determined. All three complexes are dimeric in the solid state. | |
Infrared laser synthesis and properties of magnetic nano-iron-polyoxocarbosilane composites (p 1015-1021)
Josef Pola, Miroslav Mary
ko, Vladimír Vorlí
ek, Zden
k Bastl, Anna Galíková,arel Vacek, Rodica Alexandrescu, Florian Dumitrache, Ion Morjan, Lavinia Albu, Gabriel Prodan
Published Online: Jul 29 2005 11:45AM
DOI: 10.1002/aoc.951
Thermotropic properties of ferrocene derivatives bearing a cholesteryl unit: structure-properties correlations (p 1022-1037)
Daniela Apreutesei, Gabriela Lisa, Hiroki Akutsu, Nicolae Hurduc, Shin'ichi Nakatsuji, Dan Scutaru
Published Online: Aug 24 2005 4:32AM
DOI: 10.1002/aoc.953
The synthesis and structural characterization of new liquid-crystalline compounds containing ferrocene, azo-aromatic and cholesteryl groups are reported. | |
Synthesis and characterization of ferrocenylalkoxygermatranes and crystal structures of FcCH2OGe (OCH2CH2)3N and FcCH(CH3)OGe(OCH2CH2)3N1 (p 1038-1042)
LiChen, JianXin Chen, Lijuan Sun, Qinglan Xie
Published Online: Aug 24 2005 4:32AM
DOI: 10.1002/aoc.954
Germatranes bearing a ferrocenylalkoxyl moiety have been obtained by the reaction of HOGe(OCH2CH2)3N with various ferrocenyl alcohol. The crystal structure and antitumor activities of the new compounds was determined. | |
Short communication: An alternative and effective catalyst in the stereo-specific reaction of Z-1-aryl-1-stannyl-2-silylethenes with allyl bromide (p 1043-1046)
Taichi Nakano,enjiawai, Takanori Endoh, Shintaro Osada, Takashi Miyamoto
Published Online: Aug 10 2005 9:40AM
DOI: 10.1002/aoc.957
The Pd(dba)2-catalyzed reaction of Z-1-aryl-1-(tributylstannyl)-2 -(trimethylsilyl)ethenes with allyl bromide in the presence of copper(I) iodide is reported for the first time. The reaction in the presence of 0.5 mol% Pd(dba)2 and 8 mol% CuI in dimethylformamide takes place at room temperature to give E-2-aryl-1-(trimethylsilyl)penta-1,4-dienes exclusively in isolated yields of 62-99%. A putative reaction mechanism is proposed. | |
Synthesis of Ti-MCM-41 directly from silatrane and titanium glycolate and its catalytic activity1 (p 1047-1054)
N. Thanabodeekij, W. Tanglumlert, E. Gulari, S. Wongkasemjit
Published Online: Aug 24 2005 4:32AM
DOI: 10.1002/aoc.956
Silatrane (1) and titanium glycolate (2) synthesized from the oxide one-pot synthesis process are used as the precursors to prepare Ti-MCM-41 via sol-gel process using cetyltrimethylammonium bromide as a template. | |
Main Group Metal Compounds
Synthesis, structural characterization and bioassay screening of dimeric bis[dicarboxylatotetraorganodistannoxanes] (p 1055-1059)
Zhen-Kang Wen, Hai-Bin Song, Miao Du, Yu-Ping Zhai, Liang-Fu Tang
Published Online: Aug 24 2005 4:32AM
DOI: 10.1002/aoc.960
Reaction of bis(pyrazol-1-yl)acetic acid with n-Bu2SnO in a 1:1 molar ratio gives dimeric bis[dicarboxylatotetraorganodistannoxanes]. These organotin derivatives display low fungicidale, insecticidal and miticidal activities, but they have certain cytotoxicities for Hela cells in vitro. | |
Materials, Nanoscience and Catalysis
A novel path to luminescent hybrid molecular materials: modifying the hydroxyl group of 6-hydroxynicotinic acid by grafting to a silica network (p 1060-1064)
Li-Min Zhao, Bing Yan
Published Online: Aug 24 2005 4:32AM
DOI: 10.1002/aoc.973
A novel path was put forward to modify the hydroxyl group of 6-hydroxynicotinic acid by 3-(triethoxysilyl)-propyl isocyanate to achieve the bridging unit, which is utilized to coordinate to Tb3- via hydrolysis and polycondensation processes, resulting in the corresponding organic-inorganic molecular-based hybrid material with the two components connected by covalent bonds. | |
Planting of bis(1,5-cyclooctadiene) nickel upon silica to harvest NiO (<5 nm) nanoparticles in a silica matrix (p 1065-1069)
Kake Zhu, Lawrence D'Souza, Ryan M. Richards
Published Online: Aug 24 2005 4:32AM
DOI: 10.1002/aoc.974
Bis(1,5-cyclooctadiene) nickel (Ni(COD)2) was employed as a nickel precursor to prepare nickel oxide nanoparticles upon mesoporous silica. Structural characterization clearly shows that NiO nanoparticles of <5 nm are evenly distributed inside the silica SBA-15 matrix and mesoporosity is well preserved upon calcination and NiO formation. The surface reaction between Ni(COD)2 and surface silanols was found for the first time, and the described method may be extended conveniently to prepare other metal oxide nanoparticles upon high-surface-area supports. | |
Crystallographic report: Chain-like crystal structure of [Ni(en)2Ag(CN)2] [Ag(CN)2] (p 1070-1071)
Yan-Pin Ren, La-Sheng Long, Rong-Bin Huang, Lan-Sun Zheng
Published Online: Aug 10 2005 9:40AM
DOI: 10.1002/aoc.735
[catena-Bis(1,2-diaminoethane)nickel(II)-µ-dicyanoargentate]-dicyanoargentate, [Ni(en)2Ag2(CN)4], was synthesized and its chain-like crystal structure was determined by X-ray crystal analysis. | |
Book Review
Edited by Denis Hamilton and Stephen Crossley. Pesticide residues in food and drinking water: human exposure and risks. John Wiley and Sons, 2003, 378 pp; ISBN 0-471-48991-3 (hardcover) (p 1072)
Chris Hofelt
Published Online: Aug 24 2005 4:32AM
DOI: 10.1002/aoc.947