Mechanism of reduction of the nitrite ion by CuI complexes

被引：13

作者：

Burg, A

Lozinsky, E

Cohen, H

Meyerstein, D ^{[1
]}

机构：

[1] Ben Gurion Univ Negev, Dept Chem, Beer Sheva, Israel

[2] Nucl Res Ctr Negev, IL-84190 Beer Sheva, Israel

[3] Coll Judea & Samaria, Dept Biol Chem, Ariel, Israel

来源：

EUROPEAN JOURNAL OF INORGANIC CHEMISTRY | 2004年 / 18期

关键词：

nitrite; copper(I); reduction; NO;

D O I：

10.1002/ejic.200400255

中图分类号：

O61 [无机化学];

学科分类号：

070301 [无机化学]; 081704 [应用化学];

摘要：

The reaction of Cu-aq(+) with NO2- was studied. The results are consistent with the mechanism: Cu-aq(+) + NO2- reversible arrow (Cu+NO2-), K = 140 +/- 30 M-1(Cu+NO2-) + H+ --> Cu2+ + NO + OH-, k = 4.6 x 10(5) M-1 S-1. It is proposed that the copper is bound to the nitrogen in the transient complex (Cu+NO2-). In addition, the reaction was studied with ((CuLi)-L-I)(+) complexes. The results show that the ligands reduce the value of K and that their effect on k depends on the redox potential of the ((CuLi)-L-II/I) couple. This reaction is the simplest model for the CuNIR (NIR = Nitric reductase) enzymes. (C) Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2004).

引用

页码：3675 / 3680

页数：6

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