Solvent-controlled generation of two pairs of mononuclear single-strand helical copper(II) complexes of 2,6-pyridinediylbis(2-pyridinyl)methanone: metal-promoted hydrolysis and solvolysis with asymmetric induction

被引:20
作者
Chen, XD [1 ]
Mak, TCW [1 ]
机构
[1] Chinese Univ Hong Kong, Dept Chem, Hong Kong, Hong Kong, Peoples R China
关键词
helical copper(II) complex; pyridyl ketone; hydrolysis; solvolysis;
D O I
10.1016/j.ica.2004.11.024
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
Two pairs of stable mononuclear single-strand helical complexes were obtained through controlled self-assembly using 2,6-pyridinediylbis(2-pyridinyl)methanone (L) and copper(II) salts. CuL(NO3)(2) (1) and [CuL'(H2O)](NO3)(2) (2) represent a pair in which L takes the diketo form in 1 but hydrolyzed in 2, while CuLCl2 (3) and [CuL''Cl]Cl (4) constitute another pair in which L remains intact in 3 but solvolyzed in 4. A mechanism of the metal-promoted hydrolysis and solvolysis of ligand L with asymmetric induction is proposed through studies on the crystal structures of these complexes. (c) 2004 Elsevier B.V. All rights reserved.
引用
收藏
页码:1107 / 1112
页数:6
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