1. Department
of Chemistry, Jadavpur University, Kolkata 700 032, India
2. Departament
de Química, Universitat de les Illes Balears, Crta. de Valldemossa
km 7.5, 07122 Palma
(Baleares), Spain
3. Institute of Chemical Research of Catalonia (ICIQ), Avgda. Països Catalans 16, 43007 Tarragona, Spain
4. Catalan Institution for Research and Advanced Studies (ICREA), Passeig Lluís Companys, 23, 08018, Barcelona, Spain
5. Department
of Physics, M. G. Mahavidyalaya, Bhupatinagar, Purba Medinipur, West Bengal, 721 425, India
6. Central Chemical Laboratory, Geological Survey of India, 15 A & B Kyd Street, Kolkata 700 016, West Bengal, India