Magnetic properties and coordination environments of oxovanadium(IV) within VO(IV)N2S2 and VO(IV)S4 chromophores
摘要:
Oxovanadium(IV) complexes of the 2-amino-1-cyclopentene-1-dithiocarboxylate (acdc) and 2-methylamino-1-cyclopentene-1-dithiocarboxylate (N-CH(3)acdc) anion have been synthesized and characterized by using IR, EPR, magnetic susceptibility and XPS measurements to elucidate the coordination environment of oxovanadium(IV) complexes of the acdc ligand and its derivative. The corresponding spin-Hamiltonian parameters, [g] values and hyperfine coupling constants, (A) have been examined for the prepared complexes having VO(IV)N2S2 and VO(IV)S-4 chromophore. The EPR data confirm its usefulness in the characterization of the coordination environments of these compounds. The XPS studies have also provided us with valuable information on the binding properties of VO(acdc)(2) and VO(N-CH(3)acdc)(2). The magnetic susceptibility, coupled with the V=O stretching frequency suggest the presence of some degree of magnetic interaction in these compounds. (C) 2000 Elsevier Science B.V. All rights reserved.
Dey, K.; Maiti, R. K.; Bhar, J. K., Indian Journal of Chemistry, Section A: Inorganic, Physical, Theoretical and Analytical, 1981, vol. 20, # 8, p. 810 - 813