1. Institute of Inorganic and Analytical Chemistry Justus-Liebig-University Giessen Heinrich-Buff-Ring 17 35392 Giessen Germany
2. Department of Chemistry Faculty of Science Mansoura University El Gomhouria, Mansoura Qism 2, Dakahlia Governorate 11432 Mansoura Egypt
3. Lebedev Physical Institute of the Russian Academy of Sciences Leninskiy pr-t, 53 119991 Moscow Russia
4. Hebei University of Technology Guanrong Dao 8, Hongqiao District 300130 Tianjin P. R. China
5. Center of Materials Research (LAMA) Justus-Liebig-University Giessen Heinrich-Buff-Ring 16 35392 Giessen Germany