1. Department of Chemistry, School of Chemical Sciences, Central University Karanataka, Kalaburagi, Karanataka-585367, India
2. School of Chemical Sciences, Goa University, Taleigao Plateau, Goa-403 206, India
3. Deapartment of Chemistry, Tai Gowalkar Mahavidyalaya, Ramtek, Nagpur-441106, India