1. University of Bucharest, Faculty of Chemistry, Inorganic Chemistry Laboratory, Str. Dumbrava Rosie nr. 23, 020464-Bucharest, Romania
2. CNRS, LCC (Laboratoire de Chimie de Coordination), 205, route de Narbonne, F-31077 Toulouse, France
3. Université de Toulouse, UPS, INPT, LCC, F-31077 Toulouse, France
4. Department of Chemistry, Faculty of Science, University Aboubaker Belkaid, BP 119, 13000 Tlemcen, Algeria