Catalytic disproportionation of hydrogen peroxide by the tetranuclear manganese complex [Mn-II(2-OHpicpn)](4)

被引：43

作者：

Gelasco, A ^{[1
]}

Askenas, A ^{[1
]}

Pecoraro, VL ^{[1
]}

机构：

[1] UNIV MICHIGAN,DEPT CHEM,ANN ARBOR,MI 48109

来源：

INORGANIC CHEMISTRY | 1996年 / 35卷 / 06期

关键词：

D O I：

10.1021/ic951035g

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The tetranuclear complex [Mn-II(2-OH-picpn)](4+)(4) catalytically disproportionates H2O2 to give H2O and O-2. Saturation kinetics are observed as well as a significant deuterium isotope effect when D2O2 is used as substrate. While this compound exhibits one of the largest V-max values for a manganese catalase mimic, the k(cat)/K-M values are similar to those of other highly reactive manganese models. A speculative model based on iron chemistry may explain the low binding affinity of peroxide for the compound.

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页码：1419 / &

页数：3

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