Secondary bonding in a six-coordinate Mn(II) complex as a model of associative substitution

被引:9
|
作者
Cady, Clyde W. [1 ]
Incarvito, Christopher [1 ]
Brudvig, Gary W. [1 ]
Crabtree, Robert H. [1 ]
机构
[1] Yale Univ, Dept Chem, New Haven, CT 06520 USA
基金
美国国家卫生研究院;
关键词
manganese; seven-coordinate; hexadentate ligand;
D O I
10.1016/j.ica.2006.02.005
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
The new hexadentate, bis-pincer ligand, (dipyCH(2))MeNCH2CH2NMe(CH(2)dipy) (dipy = 2,2'-dipyridyl-6-yl) forms a crystallographically characterized Mn(II) complex in which each half of the ligand binds a separate Mn(OAc)(2) unit. The structure consists of a distorted N3Mn(eta(2)-OAc)(eta(1)-OAc) core with six normal coordinate bonds and a long (2.85 angstrom) secondary bond to a seventh ligand atom, an oxygen of the ill-acetate. In addition to demonstrating an interesting coordination mode, the structure also mimics a predicted transition state in the associative ligand exchange of octahedral Mn(II) complexes. (c) 2006 Elsevier B.V. All rights reserved.
引用
收藏
页码:2509 / 2512
页数:4
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