Formation of an Unusual Copper(II) Complex from the Degradation of a Novel Tricopper(II) Carbohydrazone Complex
An unusual copper(II) complex [Cu(L1a)2Cl2] CH3OH·H2O·H3O+Cl− (1a) was isolated from a solution of a novel tricopper(II) complex [Cu3(HL1)Cl2]Cl3·2H2O (1) in methanol, where L1a is 3-(2-pyridyl)triazolo[1,5-a]-pyridine, and characterized with single crystal X-ray diffraction study. The tricopper(II) complex of potential ligand 1,5-bis(di-2-pyridyl ketone) carbohydrazone (H2L1) was synthesized and physico-chemically characterized, while the formation of the complex 1a was followed by time-dependant monitoring of the UV–visible spectra, which reveals degradation of ligand backbone as intensity loss of bands corresponding to O → Cu(II) charge transfer.
Manoj, E.; Kurup, M.R. Prathapachandra; John, Rohith P.; Nethaji, M.; and Punnoose, Alex. (2009). "Formation of an Unusual Copper(II) Complex from the Degradation of a Novel Tricopper(II) Carbohydrazone Complex". Inorganic Chemistry Communications, 12(10), 952-955.