DISSOCIATION AND ISOMERIZATION KINETICS OF (MESO-5,5,7,12,12,14-HEXAMETHYL-1,4,8,11-TETRAAZACYCLOTETRADECANE)COPPER(II) (BLUE) CATION IN STRONGLY ACIDIC, AQUEOUS-MEDIA

[[abstract]]The macrocyclic ligand meso-5,5,7,12,12,14-hexamethyl- 1,4,8,1l-tetraazacyclotetradecane (1)'~~ forms a blue and a red complex with ~opper(II).~ The crystal structure determina- tions of these complexes have recently been completed: The dissociation rate constants of these complexes in 6.1 M HC1 reported by Cabbiness and Margerum3 led to the discovery of the extraordinary kinetic stability of these types of corn-plexes. In order to provide insight into the ways in which the macrocyclic ligand might impart unusual properties to the metal complexes, it was considered desirable to study the kinetics and mechanisms of the reactions of the macrocyclic complexes in strongly acidic, aqueous media. The detailed kinetic study of the dissociation and the isomerization of [Cu(teta)(blue)12+ in 1-5 M HN03 (eq 1 and 2) has now been completed, and the results are reported herein.[[fileno]]2010337010015[[department]]化學