1. Department of Chemistry and Biology, University of Salerno, via Giovanni Paolo II, 132 Fisciano, I-84084 Salerno, Italy
2. Interuniversity Consortium Chemical Reactivity and Catalysis, CIRCC, via Celso Ulpiani 27, 70126 Bari, Italy
3. Dipartimento di Chimica
G. Ciamician, Alma Mater Studiorum, Università di Bologna, via Selmi
2, Bologna, Italy