Synthesis, spectroscopy and electrochemical study of cobalt(III) N2O2 Schiff-base complexes

被引：12

作者：

Kianfar, Ali Hossein ^{[1
]}

Zargari, Solmaz ^{[2
]}

机构：

[1] Yasuj Univ3, Dept Chem, Yasuj, Iran

[2] Kurdistan Univ, Dept Chem, Sanandaj, Iran

来源：

JOURNAL OF COORDINATION CHEMISTRY | 2008年 / 61卷 / 03期

关键词：

phosphine; cobalt; spectroscopy; Schiff base; electrochemistry;

D O I：

10.1080/00958970701329217

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The complexes [Co(Chel)(PBu3)]ClO4 center dot H2O [Chel = BFE (bis(1,1,1-trifluoroacetylacetone)ethylenediimine) and BCE (bis(3-chloroacetylacetone)ethylenediimine)] and [Co(Chel)(PPh3)]ClO4 center dot H2O, (Chel = BBE = bis(benzoylacetone)ethylenediimine and BFE), were synthesized and characterized. The spectroscopic and electrochemical properties of cobalt(III) derivatives of BAE (bis(acetylacetone)ethylenediimine) and related ligands have also been investigated. Electronic spectroscopic data indicate that the absorption between 600 and 760 nm in Co(III) BAE complexes is related to the lowest d-d transition. Axial ligands affect this transition and the reduction potential of Co(III) to Co(II) through sigma-interaction with the dz(2) orbital. The pi acceptor property of Schiff-base ligands increases in the order: BFE>BCE>BBE>BAE.

引用

页码：341 / 352

页数：12

共 38 条

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