1. Department of Chemistry, University of Otago, P. O. Box 56, Dunedin, New Zealand
2. Faculty of Pharmacy, Pharmaceutical Chemistry Department, Al Azhar University, Egypt
3. Mamedaliev Institute of Petrochemical Processes, National Academy of Sciences of Azerbaijan, Baku, Azerbaijan
4. Faculty of Science, Department of Chemistry, Sohag University, 82524 Sohag, Egypt