Syntheses, structures and properties of copper(II) complexes containing N-(2-hydroxybenzyl)-amino amide ligands

被引:44
|
作者
Wang, Xiaobai
Ding, Jun
Vittal, Jagadese J.
机构
[1] Natl Univ Singapore, Dept Chem, Singapore 117543, Singapore
[2] Natl Univ Singapore, Dept Mat Sci & Engn, Singapore 117543, Singapore
关键词
copper(II) complexes; reduced Schiff base ligands; crystal structures; magnetic properties; catalytic activity;
D O I
10.1016/j.ica.2006.01.006
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
Four copper(II) complexes containing the reduced Schiff base ligands, namely, N-(2-hydroxybenzyl)-glycinamide (Hsglym) and N-(2-hydroxybenzyl)-L-alaninamide (Hsalam) have been synthesized and characterized. The crystal structures of [Cu-2(sglym)(2)Cl-2] (1), [Cu-2(salam)(2)(NO3)(2)]center dot H2O(3), [Cu-2(salam)(2)(NO3)(H2O)](NO3)center dot 1.5H(2)O (4), [Cu-2(salam)(2)](ClO4)(2)center dot 2H(2)O (5) show that the Cu(II) atoms are bridged by two phenolato oxygen atoms in the dimers. The sglym ligand bonded to Cu(II) in facial manner while salam ligand prefers to bind to Cu(II) in meridonal geometry. Variable temperature magnetic studies of 3 showed it is antiferromagnetic. These Cu(II) complexes and [Cu-2(sglym)(2)(NO3)(2)](2), exhibit very small catecholase activity as compared to the corresponding complexes containing acid functional groups. (c) 2006 Elsevier B.V. All rights reserved.
引用
收藏
页码:3481 / 3490
页数:10
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