Syntheses, Structures And Weak Interactions Of Macrocyclic Oxamido Complexes

Macrocyclic coordination chemistry is an active fields of research at the cross point of chemistry, physics, biology and material sciences and has attracted considerable attention.(1)A new polymorph of a reported mononuclear macrocyclic oxamido complex was synthesized and characterized by X-ray single crystal diffraction, UV spectra and IR spectra.(2)Two novel eight-semi-coordinate Ni(II) and Mn(II) complexes were synthesized and characterized by X-ray single crystal diffraction, UV spectra, TG methods and IR spectra. The abnormally long coordination bonds and high coordination numbers were rationalized as being stabilized by intermorlecular interactions.(3) One new mononuclear Ni(II) complex ligand and a trinuclear complex of this complex ligand were synthesized. The trinuclear complex was characterized by X-ray single crystal diffraction.