Antiferromagnetic super exchange and spectral studies on dimeric 8-quinolinolato complexes of copper(II) imides

Abstract

The complexes of the type [Cu(Q)(P)]2 and [Cu(Q)(S)]2 where HQ = 8-hydroxyquinoline and P and S are deprotonated phthalimide and succinimide, respectively, were prepared and characterized on the basis of molecular mass determination, elemental analysis. X-ray diffraction, ir, electronic spectra, conductance, thermal analysis, and magnetic measurements. They were of tetrahedrally distorted square planar structure. The susceptibility data at different temperatures were fitted to the Bleaney–Bowers equation which indicated medium antiferromagnetic super exchange interaction within one dimeric unit. The values of exchange integral and g were found to be −136 cm−1 and 2.18, respectively, for the phthalimide complex and −128 cm−1 and 2.16, respectively, for the succinimide complex.