Complexes of cyclocarbohydroxamic acids with cobalt(II), nickel(II) and copper(II)

被引：6

作者：

Nwabueze, JN

机构：

[1] Department of Chemistry, University of Abuja, Abuja, FCT

来源：

TRANSITION METAL CHEMISTRY | 1997年 / 22卷 / 02期

关键词：

Oxygen; Copper; Physical Chemistry; Nickel; Aqueous Solution;

D O I：

10.1023/A:1018454811322

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

A spectroscopic investigation of the reactions of cyclopropanecarbohydroxamic acid (CPAH) with Co-II and of cyclohexylacetohydroxamic acid (CHAH) with Co-II, and Ni-II Cu-II in aqueous solution reveals the sole formation 1:2 complexes at equilibrium. Stability constants (log beta(2) at 25 degrees C and I = 0.1 mol dm(-3)) are 9.11, 9.91, 11.70 and 24.18 for [Co(CPA)(2)], [Co(CHA)(2)], [Ni(CHA)(2)] and [Cu(CHA)(2)], respectively. Spectral and magnetic studies of the isolated complexes indicate octahedral coordination via the oxygen atoms of the hydroxamate group for the Co-II and Ni-II complexes but a square planar geometry for the Cu-II complex.

引用

页码：123 / 125

页数：3

共 50 条

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[J]. Transition Metal Chemistry, 1997, 22 : 123 - 125
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