Oxorhenium(V) complexes with 1H-benzimidazole-2-carboxylic acid - Synthesis, structural characterization and catalytic application in epoxidation reactions

被引：12

作者：

Machura, B. ^{[1
]}

Wolff, M. ^{[1
]}

Benoist, E. ^{[2
,3
]}

Schachner, J. A. ^{[4
]}

Moesch-Zanetti, N. C. ^{[4
]}

Takao, K. ^{[5
]}

Ikeda, Y. ^{[5
]}

机构：

[1] Univ Silesia, Inst Chem, Dept Crystallog, PL-40006 Katowice, Poland

[2] CNRS, Lab Synth & Physicochim Mol Interet Biol, SPCMIB, UMR 5068, F-31062 Toulouse 9, France

[3] Univ Toulouse, Lab Synth & Physicochim Mol Interet Biol, SPCMIB, UPS,UMR 5068, F-31062 Toulouse 9, France

[4] Karl Franzens Univ Graz, Inst Chem, A-8010 Graz, Austria

[5] Tokyo Inst Technol, Nucl Reactors Res Lab, Meguro Ku, Tokyo 1528550, Japan

来源：

POLYHEDRON | 2014年 / 69卷

关键词：

Oxorhenium(V) complexes; Multidentate heterocyclic aromatic; carboxylic acid; X-ray crystal structure; Epoxidation; CARBOXYLIC-ACIDS; OXO-COMPLEXES; BASIS-SET; POTENTIALS;

D O I：

10.1016/j.poly.2013.12.004

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Depending on the experimental conditions three novel oxorhenium(V) complexes incorporating 1H-benzimidazole-2-carboxylic acid (2-bimH) cis-Cl,Cl-[ReOCl2(2-bim)(PPh3)] (1), cis-Br,Br-[ReOBr2 (2-bim)(PPh3)] (2) and [ReOCl(2-bim)(2)] (3) were synthesized. The reported complexes were characterized by spectroscopic methods (IR, H-1, C-13, P-31 NMR, UV-Vis, ESI+-MS), cyclic voltammetry and single crystal X-ray diffraction analysis. To elucidate the structural, spectroscopic and bonding properties, calculations at the DFT level were undertaken. The catalytic competencies of compounds 1-3 were investigated in the epoxidation of cyclooctene with tert-butyl hydroperoxide (TBHP) as oxidant. The studies revealed higher catalytic activities for complexes based on one 1H-benzimidazole-2-carboxylic acid (compounds 1 and 2) and phosphine as ancillary ligand, with the yield of cyclooctane-oxide varying between 60% and 64% (50 degrees C, 24 h). (C) 2013 Elsevier Ltd. All rights reserved.

引用

页码：205 / 218

页数：14

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