Synthesis and Magneto-spectral Studies of Cobalt(II) and Nickel(II) Complexes of 4[N-(p-Dimethylaminobenzalidene) Amino] Antipyrine Semicarbazone

Abstract

A series of Co(II) and Ni(II) complexes of 4[N-(p-dimethylaminobenzalidene)amino] antipyrine semicarbazone (DABAAPS) of the general composition MX₂·DABAAPS·H₂O (M = Co²⁺or Ni²⁺, X = Cl^–, NO^–₃, NCS^– or CH₃COO^–) or M(ClO₄)₂·2(DABAAPS) (N = Co²⁺ or Ni²⁺). These complexes were characterized through elemental analysis, electrical conductance, magnetic studies, infrared and electronic spectra. In all the complexes DABAAPS behaves as tridentate (N,N,O) ligand and has octahedtal geometry. Thermal properties of these complexes were also investigated.