Synthesis and characterization of zinc(II) and cobalt(III) Schiff base complexes

Research paper by Sheng-Feng Hong, Xiao-Huan Liang, Hua-Cai Fang, Xu-Lin Zhan, Zheng-Yuan Zhou, Li Chen, Yue-Peng Cai

Indexed on: 15 Nov '08Published on: 15 Nov '08Published in: Transition Metal Chemistry


Two mononuclear complexes with the Schiff base ligand 2-((2-(dimethylamino)ethylimino)methyl)phenol (HL), namely ZnL2 and CoL2(N3), have been synthesized and characterized using single-crystal X-ray diffraction and spectroscopy (IR, 1H NMR, UV–Vis, MS and EA). Both complexes are mononuclear. The coordination geometry in the Zn(II) complex is distorted square-pyramidal with a weak Zn···N interaction. The Co(III) complex is distorted octahedral, and the neutral molecule unit [CoIIIL2(N3)] is connected by C–H···N hydrogen bonds to form a one-dimensional infinite chain. The luminescence of the zinc compound has been investigated.