1. 1Department of Chemistry, Govt.V.Y.T.PG. Auto. College Durg, Chhattisgarh, 491001, India
2. 2Department of Chemistry, N.R.M. Govt.Girls College Dhamtari, Chhattisgarh, 493773, India
3. 3Department of Chemistry, Udai Pratap Autonomous PG College Varanasi, UP, India