Ligand behaviour and reactivity of phenyl 2-pyridyl ketone azine. Structures of two polymorphic forms of the azine and a copper complex of the 3-phenyltriazolo1,5-apyridine

摘要

Two polymorphic forms of phenyl 2-pyridyl ketone azine (L-1) and the complex (ZnLCl2)-Cl-1 have been synthesized and characterized by X-ray diffraction analysis. In the reaction with copper(II) chloride both isomers of the azine undergo hydrolytic and oxidative processes, giving rise to the complex (CuL2Cl2)-Cl-2 (L-2 = 3-phenyltriazolo1,5-a-pyridine). In order to clarify this process, phenyl 2-pyridyl hydrazone (L-3) has been synthesized and treated with copper(II) chloride; in this way CuL2(Cl). H2O and (CuLCl2)-Cl-3 were isolated. References: 36