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

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.

Tricarbonylrhenium(I) complexes; Diimine ligands; X-ray crystal structure

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