Spectroscopic
and electrochemical investigation of mixed – ligand transition metal complexes with
2N-salicylidine-5-(p-nitrophenyl)-1, 3, 4-thiadiazole and 5, 5’-Me2bipy in aqueous
medium
Srivastava Ashish Kumar and Rai Archana
Res. J. Chem. Environ; Vol. 27(5); 73-82;
doi: https://doi.org/10.25303/2705rjce073082; (2023)
Abstract
Herein we reported the spectroscopic and electrochemical investigation of four transition
metal complexes viz. VO(II), Co(II), Ni(II) and Cu(II) of 2N-salicylidine-5-(p-nitrophenyl)-1,
3, 4-thiadiazole Schiff base ligand (L) and 5,5’-dimethyl-2,2’-bipyridine (Me2bipy)
in the aqueous (1: 1: 1 molar ratio) medium. Transition metal complexes were characterized
by microanalysis, FT-IR, electronic absorption and mass spectroscopy.
Electrochemistry of transition metal complexes was studied in aqueous medium by
using cyclic voltammetry (CV) at glassy carbon working electrode (GCE) versus Ag/AgCl.
The reduction potential of the VO (II) and Cu (II) becomes more negative with increasing
scan rate while Co (II) and Ni (II) positive show easier reduction.
