1. Centre for Advanced Studies in Chemistry
2. North-Eastern Hill University
3. Shillong 793 022
4. India
5. Department of Chemistry
6. Guru Nanak Dev University
7. Amritsar 143005
8. Centro de Química Estrutural
9. Complexo I
10. Instituto Superior Técnico
11. Universidade de Lisboa
12. 1049-001 Lisboa