Synthesis and Characterization of Co(II), Ni(II) and Cu(II) Complexes with Some Schiff Bases

Abstract

Metal chelates of Co(ll), Ni(Il) and Cu(II) with Schiff bases have
been synthesized by the condensation of  1-oxo-1,2,3,4-
tetrahydrocarbazoles with semicarbazide/thiosemicarbazide hydrochloride
and characterised by using physico-chemical and
spectroscopic methods. The ligands OTCS and OTCTS were suggested
to behave as neutral tridentate (N,N,O/S) ligand and have
octahedral geometry. The complexes have general composition
[M(OTCS)₃] and [M(OTCTS)₂],  M = Co(ll), Ni(lI) and Cu(II). The
complexes were found to be non-electrolytic in nature due to low
value of electrical conductivity.