1. Department of Chemistry and Chemical Technologies, Università della Calabria, Ponte P. Bucci, 87036 Arcavacata di Rende (CS), Italy
2. Institut de Chimie (UMR 7177), University of Strasbourg − CNRS, 4 Rue Blaise Pascal, 67000 Strasbourg, France
3. Institut Universitaire de France (IUF), 1 rue Descartes, 75231 Paris, France