Thermal isomerization of cis-[Fe(cyclam)Cl2]Cl·H2O complex in the solid state

Abstract The solid state thermal isomerization of cis -[Fe(cyclam)Cl 2 ]Cl·H 2 O (cyclam is 1,4,8,11-tetraazacyclotetradecane), is investigated by TG/DSC, electrochemical and vibrational spectroscopic methods. The thermal isomerization of this complex was found to be water dependent and endothermic. An aquation–anation pathway that precedes the macrocyclic ligand stereochemical rearrangement in the complex is proposed.