Remote Control of NO Reactivity through Redox Switching in BinuclearCyano-Bridged Complexes

P. FORLANO; A. R. PARISE; J. A. OLABE

INORGANIC CHEMISTRY

AMER CHEMICAL SOC

Año: 1998 vol. 37 p. 6406 - 6407

0020-1669

The binding of NO to transition metals and further reactivityare of concern to coordination chemists, in particular for elucidatingthe role of NO in diverse physiological functions.1 Thus,the electrophilicity of NO+ and its redox interconversions to NOor NO- become of interest for some biologically relevant lowspind6 systems.We prepared a set of dinuclear complexes containing thepentacyanonitrosylmetalate fragments, bridged through one of thecyanides to a pentaammineruthenium moiety. To control thereactivity of bound NO+, we studied the rate of addition of OH-,with the result that the metal-nitrosyl electrophilicity can bedramatically altered by switching the oxidation states of the distantRu(NH3)5 moiety.