Affiliation: | 1. Department of Chemistry, Ramananda College, Bishnupur, Bankura, 722 122, India;2. Department of Chemistry, Dr.Bhupendranath Dutta Smriti Mahavidyalaya, Burdwan, 713 407, India;3. Department of Chemistry, University of Calcutta, 92 APC Road, Kolkata, 700 009, India;4. Department of Chemistry, University of Burdwan, Burdwan, 713 104, India |