1. Department of Chemistry, Inorganic Section, Jadavpur University, Kolkata 700032, India
2. Govt. College of Engineering and Leather Technology, Salt Lake Sector-III, Block-LB, Kolkata 700106, India
3. Departamento de Química Inorgánica, Instituto de Ciencia Molecular, Universidad de Valencia, C/Catedrático José Beltrán, 2, 46980 Paterna, Spain