1. Department of Materials Science
2. Indian Association for the Cultivation of Science
3. Kolkata 700 032
4. India
5. Director Research Unit
6. Centre de Recherche Paul Pascal CRPP-CNRS UPR 8641 Research team for “Molecular Materials & Magnetism” 115
7. 33600 Pessac
8. France
9. Department of Inorganic Chemistry