Kinetics of ethylenediamine exchange in pentacyano(ethylenediamine)ferrate(II)
Abstract
Rate constants (K–1) and activation parameters for the release of ethylenediamine (en) and monoprotonated ethylenediamine (Hen) co-ordinated to the [Fe(CN)5]3– moiety are reported, together with the corresponding stability constants. The rates of formation (kf) of the complexes have been evaluated indirectly. The results confirm previous predictions of a dissociative mechanism where the basicity of the ligand determines k–1, whilst only the charge on the ligand effects kf.