1. Department of Chemistry, University College of Science, University
of Calcutta, 92, APC Road, Kolkata 700 009, India
2. Susil Kar College, Ghoshpur, Champahati, Baruipur, 24 Parganas(S), West Bengal 743
330, India
3. School of Chemistry, The University of Reading, P.O. Box 224, Whiteknights,
Reading RG 66AD, United Kingdom
4. Instituto de Ciencia Molecular
(ICMol), Parque Científico, Universidad de Valencia, C/Catedrático José Beltrán, 2. 46980 Paterna,
Valencia, Spain