The role of methyl and benzyl substituted dithiocarbazate of 2-acetyl pyridine for the formation of bridged dimeric and unbridged monomeric copper(II) complexes and catecholase mimetic activity of the complexes

Monomeric and chloro bridged dimeric copper(II) complexes of S-aryl/alkyl pyridinyl dithiocarbazates have been synthesized and structurally characterized. The chloro-unbridged structure monomer is favored by London dispersion between its layers and the chloro-bridged dimer is stabilized by electrostatic interactions between Cu and Cl atoms located at different layers. Both the complexes exhibit prominent catecholase activity in methanol.