Synthesis, characterization and crystal structure of a new unsymmetric tetranuclear copper-carbonate complex:: reversible CO2 fixation

被引：27

作者：

Fernandes, C

Neves, A ^{[1
]}

Bortoluzzi, AJ

Szpoganicz, B

Schwingel, E

机构：

[1] Univ Fed Santa Catarina, Dept Quim, Lab Bioinorgan & Cristalog, BR-88040900 Florianopolis, SC, Brazil

[2] Univ Sul Santa Catarina, Ctr Ciencias Exatas Agrarias & Engn, BR-88130000 Florianopolis, SC, Brazil

来源：

INORGANIC CHEMISTRY COMMUNICATIONS | 2001年 / 4卷 / 07期

关键词：

copper(II) complexes; unsymmetric ligand; crystal structure; CO2; fixation; tetranuclear complex; alkoxide-bridged complex;

D O I：

10.1016/S1387-7003(01)00212-X

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

A novel tetranuclear unsymmetric copper(II) complex [Cu-4(II)(TPPNOL)(2) (CO3)(2)](ClO4)(2). 6H(2)O (1), (HTPPNOL = N,N,N'-tris(2-pyridylmethyl)-1,3-diaminopropan-2-ol was obtained by the reaction between copper(II) perchlorate hexahydrate and the ligand HTPPNOL, under a CO2 atmosphere, in a basic medium. The synthesis, X-ray crystal structure and spectroscopic properties of (1) are presented. The reversibility of the CO2 fixation process was monitored by W-Vis spectroscopy in an aqueous medium (NaOH/HClO4), and a nucleophilic CO2 fixation mechanism through the intermediate hydroxo [Cu-2(HTPPNOL) (OH)(2)](+) complex is proposed. (C) 2001 Elsevier Science B.V. All rights reserved.

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页码：354 / 357

页数：4

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