1. Department of Chemistry School of Chemical Sciences & Pharmacy Central University of Rajasthan Bandarsindri, Tehsil: Kishangarh, Dist. Ajmer Rajasthan 305817 India
2. Department of Chemistry University of North Texas 1155 Union Circle, #305070 Denton TX 76203-5017 USA
3. Department of Chemistry National Institute of Technology-Warangal Hanamkonda Warangal 506004 India