1. Homogeneous Catalysis Laboratory, Department of Chemistry, The University of Burdwan, Burdwan-713104, WB, India
2. Chemical Sciences Laboratory, Government General Degree College, Singur, Hooghly 712409, WB, India
3. Central Department of Chemistry, Tribhuvan University, Kirtipur, Nepal
4. Department of Chemistry, M.M.A.M.C., Tribhuvan University, Biratnagar, Nepal