1. Department of Chemistry University of Delhi Delhi 110007 India
2. Department of Chemistry, COBS&H, CCSHAU Hisar Haryana 125004 India
3. Department of Chemistry & Centre of Advanced Studies in Chemistry Panjab University Chandigarh 160014 India
4. Regional Centre of Advanced Technologies and Materials Palacký University in Olomouc Šlechtitelů 27 783 71 Olomouc Czech Republic
5. Department of Chemistry R. K. P. G. College Shamli Uttar Pradesh 247776 India