INVESTIGADORES
BARI sara Elizabeth
artículos
Título:
Three Redox States of Nitrosyl: NO+, NO., and NO-/HNO Interconvert Reversibly on the Same Pentacyanoferrate(II) Platform
Autor/es:
MONTENEGRO, ANDREA C.; AMOREBIETA, VALENTÍN T.; SLEP, LEONARDO D.; MARTÍN, DIEGO F.; RONCAROLI, FEDERICO; MURGIDA, DANIEL H.; BARI, SARA E.; OLABE, JOSÉ A.
Revista:
Angewandte Chemie
Editorial:
Wiley-VCH
Referencias:
Lugar: Weinheim; Año: 2009 vol. 48 p. 4213 - 4216
ISSN:
1433-7851
Resumen:
Spectroscopic characterization (UV-vis, IR, RR, 1H NMR) of aqueous [FeII(CN)5(HNO)]3 has been achieved ensuing two-electron reduction of nitroprusside with sodium dithionite. The new complex is notoriously stable at pH 6, slowly decomposing to [Fe(CN)6]4 and N2O. It may be deprotonated at increasing pH, pKa = 7.7, with consequent oxidation of bound NO to [FeII(CN)5(NO)]3. FeII(CN)5(HNO)]3 is the first non-heme iron-nitroxyl aqueous complex, able to be reversibly redox-active and proton-releasing under biorelevant conditions.
