Esterolytic activity of metal complexes of 2,6-diacetylpyridine dioxime

被引:0
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作者
Tagle, PG [1 ]
Yatsimirsky, AK [1 ]
机构
[1] UNIV NACL AUTONOMA MEXICO, FAC QUIM, MEXICO CITY 04510, DF, MEXICO
关键词
ester hydrolysis; oxime; metal complexes; catalysis;
D O I
暂无
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
The rate constants of the cleavage of 4-nitrophenyl acetate (4-O2NC6H4O2CCH3) by the complexes of 2,6-diacetylpyridine dioxime with Ni-II, Hg-II, Zn-II, Pb-II, Mn-II and Cd-II range from 2 to ca 6000 times higher than that of the free ligand under the same conditions. Complexation of the oxime ligand with Co-II and Cu-II does not affect the reaction rate. The complex with Cd-II operates in a catalytic regime with respect to the oxime ligand. The activities of the complexes with different metals, excluding Co-II, correlate with those of metallocarboxypeptidases towards an ester substrate. Copyright (C) 1996 Elsevier Science Ltd
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页码:877 / 879
页数:3
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