Salicylaldehyde-2-aminoacetophenone-2-thenoylhydrazone (H₂saath) has been found to react with the transition metal salts to form the complexes VO(H₂saath)₂SO₄, M(H₂saath)₂Cl₂ and M(H saath)₂ [M=OV(IV), Mn(II), Co(II), Ni(II), Cu(II) and Zn(II)]. The complexes have been characterized by elemental analyses, molar conductance, magnetic susceptibility, electronic and photoacoustic, ESR, IR,¹H and¹³C NMR studies. X-ray diffraction study suggests a tetragonal unit lattice for zinc(II) and an orthorhombic one for copper(II) complexes.

Salicylaldehyde-2-aminobenzophenone-2-thenoylhydrazone (Hsabth) complexes of OV(IV), Mn(II), Ni(II), Ni(II), Cu(II) and Zn(II) having 1∶2 metal-ligand stoichiometry have been prepared and characterized by elemental analyses, molar conductance, magnetic susceptibility, electronic, ESR, infrared, NMR (¹H and¹³C) and X-ray powder diffraction studies. Square pyramidal geometry around oxovandium(IV) and octahedral geometry around the rest of the metal ions have been proposed on the basis of magnetic and spectral studies.