Geometric control of redox level in tetranuclear manganese and cobalt systems

被引:33
作者
McCrea, J
McKee, V [1 ]
Metcalfe, T
Tandon, SS
Wikaira, J
机构
[1] Queens Univ Belfast, Dept Chem, Belfast BT9 5AG, Antrim, North Ireland
[2] Univ Canterbury, Dept Chem, Christchurch 1, New Zealand
基金
英国工程与自然科学研究理事会;
关键词
manganese; mixed valence; crystallography; geometry;
D O I
10.1016/S0020-1693(99)00361-8
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
A tetranucleating macrocyclic ligand derived from [2 + 2] Schiff-base condensation of 2,6-diformyl-4-methylphenol and 1,5-diaminopentan-3-ol was used to prepare a series of localised mixed-valence cobalt and manganese complexes. X-ray crystallographic structure analyses of one Co(II)(4) complex, two Mn(II)(2)Mn(III)(2) and two Co(II)Co(III)(3) complexes are presented. The observed redox levels are accounted for in terms of geometric constraints transmitted from one metal ion to the next through the ligand framework, providing a basis for cooperative control of redox processes. (C) 2000 Elsevier Science S.A. All rights reserved.
引用
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页码:220 / 230
页数:11
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