Kinetics and mechanism of replacement of nitrosobenzene in the pentacyano(nitrosobenzene)ferrate(II) ion by cyanide ion
Abstract
The rate of replacement of nitrosobenzene by cyanide ion in the complex [Fe(CN)5(PhNO)]3– increases non-linearly with the cyanide-ion concentration, reaching an asymptotic value at [CN–]ca. 2 × 10–3M in 1·5 × 10–4M complex solution. A limiting SN1 mechanism is proposed.