1. Department of Chemistry, Burdwan University, Golapbag, West Bengal, India, Department of Chemistry, Sambhu Nath College, Labpur, Birbhum-731303, West Bengal, India, Department of Solid State Physics, Indian Association for the Cultivation of Science, Jadavpur, Kolkata,700032, India, Cytogenetics and Molecular Biology Laboratory, Department of Zoology, University of Kalyani, Kalyani-741235, India, and Laboratory of Crystallography, University of Bayreuth, D-95440 Bayreuth, Germany