Mechanism of Reduction of the Nitrite Ion by Cu I Complexes

Autor:	Evgenia Lozinsky, Ariela Burg, Haim Cohen, Dan Meyerstein
Rok vydání:	2004
Předmět:	chemistry.chemical_classification Nitrite ion Chemistry Inorganic chemistry chemistry.chemical_element Reductase Copper Nitrogen Redox Medicinal chemistry Inorganic Chemistry chemistry.chemical_compound Enzyme Qualitative inorganic analysis Nitrite
Zdroj:	European Journal of Inorganic Chemistry. 2004:3675-3680
ISSN:	1099-0682 1434-1948
DOI:	10.1002/ejic.200400255
Popis:	The reaction of Cu+aq with NO2− was studied. The results are consistent with the mechanism: Cu+aq + NO2− (Cu+NO2−), K = 140 ± 30 M−1; (Cu+NO2−) + H+ Cu2+ + NO + OH−, k = 4.6 × 105M−1s−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 (CuILi)+ 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 (CuII/ILi) couple. This reaction is the simplest model for the CuNIR (NIR = Nitric reductase) enzymes. (© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2004)
Databáze:	OpenAIRE
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