Synthesis,spectral and physicochemical studies of Co~(II),Ni~(II) and Cu~(II) complexes with thiosemicarbazone (L~1) and semicarbazone (L~2) derived from 2-acetyl thiophene

摘要

Co~(II),Ni~(II) and Cu~(II) complexes are synthesized with thiosemicarbazone (L~1) and semicarbazone (L~2) derived from 2-acetyl thiophene.These complexes are characterized by elemental analysis,molar conductance,magnetic susceptibility measurements,mass,IR,electronic and EPR spectral studies.The molar conductance measurements of the complexes in DMSO correspond to non electrolytic nature except Co(L~2)_2(NO_3)_2 complex which is 1:2 electrolyte.All the complexes are of high-spin type.On the basis of spectral studies an octahedral geometry may be assigned for Co~(II) and Ni~(II) complexes except Co(L~2)(NO_3)_2 complex which is of tetrahedral geometry.A tetragonal geometry may be assigned for Cu~(II) complexes.