Nitrite catalyzes reductive nitrosylation of the water-soluble ferri-heme model FeIII(TPPS) to FeII(TPPS)(NO)

被引：59

作者：

Fernandez, BO ^{[1
]}

Lorkovic, IM ^{[1
]}

Ford, PC ^{[1
]}

机构：

[1] Univ Calif Santa Barbara, Dept Chem & Biochem, Santa Barbara, CA 93106 USA

来源：

INORGANIC CHEMISTRY | 2003年 / 42卷 / 01期

关键词：

D O I：

10.1021/ic020519r

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Quantitative investigation of the reaction of the ferri-heme model compound Fe-III(TPPS)(H2O)(2) (1) to give Fe-II(TPPS)(NO) (2) (TPPS = tetra(4-sulfonato-phenyl)porphinato) in buffered aqueous solution demonstrates a slow pH-independent reductive nitrosylation pathway in the pH range 4-6. The rate of this reaction is subject to modest general base catalysis. In the course of this study, a surprising catalytic pathway whereby nitrite ion (NO2-) strongly catalyzes the reduction of 1 to 2 under reductive nitrosylation conditions was demonstrated.

引用

页码：2 / 4

页数：3

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