1. Chemistry Department, College of Sciences and Humanities, Prince Sattam bin Abdulaziz University, P.O. 10, Box 83, Al-Kharij 11942, Saudi Arabia
2. Chemistry Department, Faculty of Science, Minia University, 61519 El-Minia, Egypt
3. Institute of Organic Chemistry, Karlsruhe Institute of Technology, 76131 Karlsruhe, Germany
4. Institute of Biological and Chemical Systems (IBCS-FMS), Karlsruhe Institute of Technology, 76344 Eggenstein-Leopoldshafen, Germany
5. Department of Chemistry, University of Helsinki, P.O. Box 55 (A. I. Virtasen Aukio I), 00014 Helsinki, Finland