Synthetic and structural studies of the transition metal complexes of manganese-, cobalt- and zinc(II) with m-nitrobenzaldehyde-thiosemicarbazone and some neutral ligands

Department of Chemistry, Regional Engineering College, Rourkela-769 008, India

Manuscript received 2 July 1999 revised 27 December 1999. accepted 26 February 2000

Complexes of the type MLL'₂X₂, where M = Co^II, Mn^II, L = m-nitrobenzaldehydcthiosemicarbazonc (NBTS), L' = quinoline, isoquinoline, pyridine and \(\gamma\)-picolinc, X = Cl^-, Br^- and MLL'X, where M = Zn^II have been synthesized. The Co^II and Mn^II complexes are paramagnetic and that of Zn^II diamagnetic. The ligand coordinates through N and S atoms. Octahedral geometry is suggested for Mn^II and Co^II complexes and tetrahedral for Zn^II complex.