Tricarbonylrhenium(I)complexes with N,N'-bis(2- and 4-nitrobenzaldehyde)-1,2-diiminoethane Schiff base ligands:synthesis,spectroscopic and crystal structure studies

摘要

fac-[Re(CO)3(2-nben)Cl] and fac-[Re(CO)3(4-nbzen)Cl] complexes consisting of 2-nbzen = N,N-bis(2-nitrobenzaldehyde)-1,2-diiminoethane and 4-nbzen = N,N'-bis(4-nitrobenzaldehyde)-1,2-diiminoethane were synthesized by the reaction of Re(CO)5Cl with nbzen ligands.These complexes were characterized by physico-chemical,spectroscopic methods and X-ray crystallography.The electrochemical behavior of the two complexes was investigated by cyclic voltammetry.In the crystal structure of [Re(CO)3(4-nbzen)Cl],the neighbouring molecules are linked together by intermolecular C-H…Cl interactions to form 1D extended chains along the b-axis.