1. Department of Chemistry, University of Calcutta, 92, A.P.C. Road, Kolkata 700009, India
2. Theoretical Science Unit, JNCASR, Jakkur, Bengaluru560064, India
3. Chemistry Department, Howard University, Washington, D.C. 20059, United States
4. State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. China