1. University of Bucharest, Faculty of Chemistry, Inorganic Chemistry Laboratory, Str. Dumbrava Rosie nr. 23, 020464-Bucharest, Romania
2. National Institute for Laser, Plasma and Radiation Physics, Laboratory of Solid-State Quantum Electronics, P.O. Box MG-36, Magurele, 077125, Romania
3. University of Bucharest, Faculty of Chemistry, Department of Physical Chemistry, Bd. Regina Elisabeta nr. 4-12, Bucharest, Romania
4. CNRS, LCC (Laboratoire de Chimie de Coordination), 205, route de Narbonne, F-31077 Toulouse, France
5. Université de Toulouse, UPS, INPT, LCC, F-31077 Toulouse, France