1. Department of Chemistry, GLA University, Mathura 281406, India
2. Department of Chemistry, Kalindi College, University of Delhi, Delhi, India
3. Department of Chemistry, Shyam Lal College, University of Delhi, Delhi, India
4. Department of Chemistry, Faculty of Science, Agriculture and Engineering, University of Zululand, P/Bag X1001, KwaDlangezwa, 3886, South Africa