Abstract:
Vanadium (V) oxytrichloride was reduced by sulphur into vanadium (IV) oxydichloride. The complexes of VOCI, with pyridine picolines and 8-hydroxyquinoline were prepared having the general formulae VOCI, L,, VOCI, L,, and VOCI, LA (here L = ligand). The IR spectra of the complexes were determined in Nujol and hexachlorobutadiene (ICE) mull and assignments of vandium-oxygen v (V-0), vanadium nitrogen v(V-N) and vanadium-chlorine v(V-C1) stretching vibrations were made. The electronic spectra of the complexes were determined in 1,2-dimethoxyethane (DME) and toluene. The ICax in the electronic spectra of the complexes was shifted to longer wavelengths by more polar solvents. (Two interrelated factors were considered to account for the observed red shift in A(1) a decrease in the energy required for the electronic excitation-resulting from increased solution of the excited state due to the polarizability and (2) dipole orientation of the solvent. The possible structural formations of the complexes were proposed.
Page(s):
330-335
DOI:
DOI not available
Published:
Journal: Pakistan Journal of Scientific and Industrial Research, Volume: 20, Issue: 6, Year: 1977