1. Department of Chemistry
2. Biology and Biotechnology
3. University of Perugia
4. 06123 Perugia
5. Italy
6. Laboratoire de Chimie et Physique Quantiques
7. UMR 5626 CNRS – Université Toulouse III-Paul Sabatier
8. F-31062 Toulouse
9. France
10. Institute of Chemical Science and Technologies “Giulio Natta” (CNR-SCITEC) c/o Department of Chemistry