Solute–water interactions in the aquation of isonicotinohydrazide and nicotinic acid complexes of pentacyanoferrate(II) at various pH

Abstract

Changes in the rate constants and activation parameters of the title reactions, as the state of protonation of the outgoing ligand and cyanides changes, seem to reflect solely changes due to the different charge type, i.e. the different contribution from water structuring around the activated complex. Rate constants for the title and related reactions are remarkably insensitive to changes in Fe–N bonding.