1. Department of Chemistry, University
College of Science, University of Calcutta, 92, APC Road, Kolkata-700 009, India
2. New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bangalore
560064, India
3. Instituto de
Ciencia Molecular
(ICMol), C/Catedrático José Beltrán 2, Parque
Científico, Universidad de Valencia, 46980 Paterna, Valencia, Spain