1. “Ilie Murgulescu” Institute
of Physical Chemistry, Romanian Academy, Spl. Independentei no. 202, 060021 Bucharest, Romania
2. Inorganic Chemistry Laboratory, Faculty of Chemistry, University of Bucharest, Str. Dumbrava Rosie no. 23, 020464 Bucharest, Romania
3. CNRS, CRPP, UPR 8641, F-33600 Pessac, France
4. Univ. Bordeaux, CRPP, UPR 8641, F-33600 Pessac, France