1. Department of Chemistry “Ugo Schiff” & CSGI
2. University of Florence
3. Florence
4. Italy
5. Istituto di Chimica dei Composti OrganoMetallici
6. Consiglio Nazionale delle Ricerche − CNR U.O.S. di Pisa
7. Pisa 56124
8. Department of Chemistry and Industrial Chemistry
9. University of Pisa