1. Université Pierre et Marie Curie Paris 6, UMR 7070, LM2N, 4 place Jussieu, 75005 Paris, France, Centre National de la Recherche Scientifique, UMR 7070, LM2N, 4 place Jussieu, 75005 Paris, France, and Department of Chemistry, CICECO, University of Aveiro, 3810-193 Aveiro, Portugal