1. 1Chemistry Discipline, School of Sciences, Indira Gandhi National Open University, New Delhi-110068, India 2Department of Chemistry, Government Post Graduate College, Noida-201301, India
2. 3Department of Chemistry, Dyal Singh College, University of Delhi, Lodhi Road, New Delhi-110003, India 4Department of Chemistry, University of Delhi, Delhi-110007, India
3. 4Department of Chemistry, University of Delhi, Delhi-110007, India 5Department of chemistry, Sri Venkateswara College, University of Delhi, Dhaula Kuan, New Delhi-110021, India
4. Department of Chemistry, Faculty of Science, Jazan University, P.O. Box 2097, Jazan 45142, Saudi Arabia
5. Department of Chemistry, University of Delhi, Delhi-110007, India
6. Chemistry Discipline, School of Sciences, Indira Gandhi National Open University, New Delhi-110068, India