1. Fuel Reprocessing Division, Bhabha Atomic Research Centre, Mumbai-400085, India
2. Fuel Chemistry Division, Bhabha Atomic Research Centre, Mumbai-400085, India
3. Theoretical Chemistry Section, Bhabha Atomic Research Centre, Mumbai-400085, India
4. Department of Chemistry, University of Reading P.O. Box 224, Whiteknights, Reading,
RG6 6AD, United Kingdom