1. Department of Chemistry
2. Government Engineering College
3. Thrissur 680 009
4. India
5. Departamento de Física y Química Teórica
6. Facultad de Química
7. Universidad Nacional Autónoma de México
8. México D. F.
9. Mexico
10. Radiation and Photochemistry Division
11. Chemistry Group
12. Bhabha Atomic Research Centre
13. Mumbai 400085