1. Department of Chemistry Government College University Faisalabad 38000 Pakistan
2. Department of Chemistry University of Okara Okara 56300 Pakistan
3. Institute of Chemistry University of the Punjab Lahore 54590 Pakistan
4. Graduate School, Department of Chemistry Chosun University Gwangju 501-759 R. O. Korea
5. Department of Chemistry University of Agriculture 38000 Faisalabad Pakistan