[1] Univ Messina, Dipartimento Chim Inorgan Chim Analit & Chim Fis, I-98166 Messina, Italy
[2] Ctr Interuniv Convers Chim Energia Solare, Sez Messina, I-98166 Messina, Italy
[3] Univ Padua, Dept Chem Sci, I-35131 Padua, Italy
[4] ITM CNR, I-35131 Padua, Italy
[5] Sez Ferrara, Dipartimento Chim, I-49100 Ferrara, Italy
[6] Sez Ferrara, Ctr Interuniv Convers Chim Energia Solare, I-49100 Ferrara, Italy