1. Department of Chemistry
2. University of Sargodha
3. Sargodha 40100
4. Pakistan
5. Institute of Inorganic and Analytical Chemistry
6. Johannes Guttenberg University
7. 55128 Mainz
8. Germany
9. Drug and Herbal Research Centre
10. Faculty of Pharmacy
11. Universiti Kebangsaan Malaysia
12. 50300 Kuala Lumpur
13. Malaysia
14. H. E. J. Research Institute of Chemistry
15. International Center for Chemical and Biological Sciences
16. University of Karachi
17. Karachi 75270