1. Department of Chemistry, Haldia Government College, Debhog, Purba Medinipur, West Bengal 721657, India
2. Department of Condensed Matter Physics and Material Sciences, S. N. Bose National Centre for Basic Sciences, Block JD, Sec. III, Salt Lake, Kolkata 700106, India
3. Department of Chemistry, Aliah University, Action Area IIA/27, Kolkata 700156, India
4. Departament de Química, Universitat de les Illes Balears, Crta. de Valldemossa km 7.5, 07122 Palma de Mallorca, Baleares, Spain