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TABLE OF CONTENTS

Volume 19 Issue 8 , Pages 911 - 995 (August 2005)


Content

Contents (p i-iv)

Published Online: Jul 14 2005 10:46AM
DOI: 10.1002/aoc.969

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Bioorganometallic Chemistry

Synthesis, characterization and biological studies of ferrocenyl complexes containing thiophene moiety (p 911-916)
Mokhles M. Abd-Elzaher, Wael H. Hegazy, Alaa El-Din M. Gaafar
Published Online: Jun 17 2005 5:01AM
DOI: 10.1002/aoc.927

 

A new ferrocenyl ligand was prepared from the condensation of 1,1-diacetylferrocene dihydrazone with 2-thiophenealdehyde. The ligand, 1,1-bis[(2-thienylmethylidene)hydrazono-1-ethyl]ferrocene, forms 1:1 complexes with Co(II), Ni(II), Cu(II) and Zn(II) in good yield. Biological activity of the ligand and its complexes indicated that the prepared complexes are more active than the ligand.

 

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Speciation Analysis and Environment

Arsenic bioaccumulation and species in marine polychaeta (p 917-929)
Joel Waring, William Maher
Published Online: Jul 14 2005 10:46AM
DOI: 10.1002/aoc.938

 

Published whole tissue arsenic concentrations in polychaete species tissues range from 1.5-2739 µg arsenic/g dry mass. Higher mean total arsenic concentrations are found in deposit-feeding polychaetes relative to non-deposit-feeding polychaete species collected from the same locations.

 

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Ion chromatography-hydride generation-atomic fluorescence spectrometry speciation of tellurium (p 930-934)
Pilar Viñas, Ignacio López-García, Beatriz Merino-Meroño, Manuel Hernández-Córdoba
Published Online: Jun 29 2005 7:23AM
DOI: 10.1002/aoc.929

 

The LC-HG-AFS coupling allows tellurium to be speciated with an excellent sensitivity. The approach here discussed represents a suitable alternative choice to the use of LC-HG-ICP-MS for the same purpose.

 

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Electrospray ionization mass spectrometry of tributyltin(IV) complexes and their larvicidal activity on mosquito larvae: crystal and molecular structure of polymeric (Bu3Sn[O2CC6H4{NdbondN(C6H3-4-OH(C(H)dbondNC6H4OCH3-4))}-o])n (p 935-944)
Tushar S. Basu Baul,eisham Surjit Singh, Michal Holccaronapek, Robert Jirásko, Anthony Linden, Xueqing Song, Alejandra Zapata, George Eng
Published Online: Jul 14 2005 10:46AM
DOI: 10.1002/aoc.937

 

The tributyltin(IV) complexes of 2-[(E)-2-(3-formyl-4-hydroxyphenyl)-1-diazenyl]benzoic acid and 4 -[((E)-1-{2-hydroxy-5-[(E)-2-(2-carboxyphenyl)-1-diazenyl] phenyl}methylidene)amino]aryls have been investigated by electrospray mass spectrometry (MS) and tandem MS techniques. The crystal structure of (Bu3Sn[O2CC6H4{NN(C6H3-4-OH(C(H)NC6H4OCH3-4))}-o])n has been determined, revealing that it is polymeric. The results of a toxicity study of tributyltin compounds on the second instar of Aedes aegypti and Anopheles stephensi mosquito larvae are reported.

 

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Distribution and fate of biologically formed organoarsenicals in coastal marine sediment (p 945-951)
Mio Takeuchi, Aki Terada,enji Nanba, Yutakaanai, Masato Owaki, Takeshi Yoshida, Takayoshiuroiwa, Hisashi Nirei, Takeshiomai
Published Online: Jul 14 2005 10:46AM
DOI: 10.1002/aoc.943

 

Methylarsonic acid, dimethylarsinic acid, trimethylarsine oxide, arsenobetaine, arsenocholine and other unidentified arsenic species were detected in marine sediment by high-performance liquid chromatography-inductively coupled plasma mass spectrometry analysis. Arsenobetaine was the dominant organoarsenical at four of the seven stations. Total organoarsenicals (as arsenic) in the surface sediment amounted to 10.6-47.5 µgg-1 dry sediment. The core analysis revealed that concentrations of organoarsenicals decreased with depth, and they are considered to be degraded within 60 years of deposition.

 

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Materials, Nanoscience and Catalysis

Optically hybrid lanthanide ions (Eu3+, Tb3+)-centered materials with novel functional di-urea linkages (p 952-956)
Q. M. Wang, B. Yan
Published Online: Jun 17 2005 5:01AM
DOI: 10.1002/aoc.926

 

In this research, a novel monomer composed by modified 3-(triethoxysilyl)-propyl isocyanate was synthesized and two class new molecular-based hybrid materials were prepared. We found that the triplet energy of 2,2-dipyridyl in this favorable hybrid system matches with the emissive energy level of RE3+ and strong green and red emissions of RE3+ have been obtained.

 

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Nickel and cobalt complexes bearing beta-ketoamine ligands: syntheses, structures and catalytic behavior for norbornene polymerization (p 957-963)
Feng Bao, Xingqiang Lü, Yuqin Qiao, Guoqiu Gui, Haiyang Gao, Qing Wu
Published Online: Jun 29 2005 7:23AM
DOI: 10.1002/aoc.928

 

Late transition metal (nickel, cobalt) complexes (1, 2) with -ketoamine ligand (L) based on the pyrazolone derivative are synthesized by condensing 1-phenyl-3-methyl-4-benzoyl-5-pyrazolone with p-fluoroaniline, and then treating the -ketoamine (L) produced with the respective metal halide. The bis(-ketoamine)metal complexes can act as catalyst precursors for norbornene polymerization with activation by methylaluminoxane. The effects of the central metal variation in the complex on catalyst activities and polymer microstructure are described.

 

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Synthesis and physico-chemical studies of double alkoxides and their allied compounds (p 964-970)
Taimur Athar, Jeong Ohwon, Sang Il Seok
Published Online: Jul 14 2005 10:46AM
DOI: 10.1002/aoc.934

 

Physico-chemical studies of alkoxides and their derivatives were carried out using FTIR, NMR, mass spectrometry, thermogravimetric analysis (TGA)-differential thermal analysis (DTA) and scanning electron microscopy (SEM). The mass spectra show the same types of fragmentation pattern in the compounds. The X-ray diffraction patterns show enhanced homogeneity. TGA-DTA measurements show that thermal decomposition occurs in steps and depends entirely on the chemical composition and the synthesis route. The SEM observations reveal a high microstructural uniformity of polycrystalline nature.

 

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Diphenylbutadiene chromium tricarbonyl in radical polymerization of methylmethacrylate (p 971-974)
Natalia B. Valetova, Ludmila L. Semyonycheva, Ilya S. Illichev, Alexander N. Artemov, Dmitry F. Grishin
Published Online: Jul 14 2005 10:46AM
DOI: 10.1002/aoc.935

 

The synthesis of poly(methylmethacrylate) in the presence of diphenylbutadiene chromium tricarbonyl under radical initiation and temperature conditions that approach those in industry proceeds without autoacceleration and is characterized by a linear increase in the polymer molecular weight with conversion.

 

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Homogeneous catalytic asymmetric dihydroxylation of olefins induced by an efficient and recoverable polymer-bound ligand QN-AQN-OPEG-OMe (p 975-979)
Siun Cheng, Sheng Yong Zhang, Ping An Wang, Yong Qinguang, Xiao Li Sun
Published Online: Jun 17 2005 5:01AM
DOI: 10.1002/aoc.936

 

A novel soluble polymer-bound alkaloid ligand QN-AQN-OPEG-OMe (1) was synthesized, and it delivered up to 99% ees in the homogeneous catalytic asymmetric dihydroxylation of seven olefins. This ligand was recovered almost quantitatively by a simple filtration and reused for five cycles without obvious decreased enantioselectivities and catalytic activities.

 

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Main Group Metal Compounds

Synthesis, structural characterization and cytotoxic activity of diorganotin(IV) complexes of N-(5-halosalicylidene)-alpha-amino acid (p 980-987)
Laijin Tian, Bochu Qian, Yuxi Sun, Xiaoliang Zheng, Min Yang, Huijun Li, Xueli Liu
Published Online: Jul 14 2005 10:46AM
DOI: 10.1002/aoc.940

 

Fourteen new diorganotin(IV) complexes of N-(5-halosalicylidene)--amino acid were synthesized and characterized by elemental analysis, IR and NMR (1H, 13C and 119Sn) spectra and X-ray crystallography. Bioassays show that the compounds are efficient cytostatic agents.

 

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Book Review

Edited by Rainer Mahrwald. Modern aldol reactions, 2 volume set. Wiley-VCH, 2004, 699 pp. ISBN 3-527-30714-1 (hardcover) (p 988)
Steven Bull
Published Online: Jul 14 2005 10:46AM
DOI: 10.1002/aoc.905

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Edited by Norbertrause and A. Stephen. Hashmi. Modern Allene Chemistry. Wiley-VCH, 2004, 1143 pp. ISBN 3-527-30671-4 (p 989)
Daniel B. Werz
Published Online: Jul 14 2005 10:46AM
DOI: 10.1002/aoc.930

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Edited by Armin De Meijere and François Diederich. Metal-catalyzed cross-coupling reactions. Wiley-VCH, 2004, 2nd edition, 2 volumes, 916 pp. ISBN 3-527-30518-1 (p 990)
David Lindsay
Published Online: Jul 14 2005 10:46AM
DOI: 10.1002/aoc.931

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Edited by Günter Schmid. Nanoparticles: from theory to application. Wiley-VCH, 2004, 611 pp. ISBN 3-527-30507-6 (hardcover) (p 991)
Michael R. Bockstaller
Published Online: Jul 14 2005 10:46AM
DOI: 10.1002/aoc.942

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Edited by Zvi Rappoport and Ilan Marek. The chemistry of organolithium compounds (two volume set). John Wiley & Sons, 2004, 1400 pp. ISBN 0-470-84339-X (hardcover) (p 992-993)
K Smith
Published Online: Jul 14 2005 10:46AM
DOI: 10.1002/aoc.941

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Piet W. N. M. Van Leeuwen. Homogeneous catalysis - understanding the art.luwer, Dordrecht, 2004, 407 pp; (UK). ISBN 1-4020-1999-8 (p 994)
Robin Whyman
Published Online: Jul 14 2005 10:46AM
DOI: 10.1002/aoc.939

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Edited by Fred Basolo and John L. Burmeister. On being well-coordinated. A half-century of research on transition metal complexes. (World Scientific Series in 20th Century Chemistry, vol. 13) World Scientific Publishing Co., Singapore, 2003, 656 pp. ISBN 981-238-087-6 (p 995)
P. J. Craig
Published Online: Jul 14 2005 10:46AM
DOI: 10.1002/aoc.932

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