1. Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur-208016,
India
2. CNRS, CRPP, UPR 8641, Centre de Recherche Paul Pascal, Equipe “Matériaux
Moléculaires Magnétiques”, 115 avenue du Dr.
Albert Schweitzer, Pessac, F-33600, France
3. Univ. Bordeaux, CRPP, UPR
8641, Pessac, F-33600, France