1. Institute of Chemical and Physical Processes, CNR-IPCF, via G. Moruzzi 1, I-56124 Pisa, Italy
2. Department of Applied Physics, Institute of Physics “Gleb Wataghin”, University of Campinas, 13.083-859 Campinas, SP, Brazil
3. Institute of Chemistry of Organometallic Compounds, CNR-ICCOM, via G. Moruzzi 1, I-56124 Pisa, Italy
4. Institute of Physics, Brasilia University, Box 4455, Brasília 70910-970, Brazil
5. Institute of Physics, Federal University of Bahia, 40.170-115, Salvador, BA, Brazil
6. Department of Physics and Astronomy, Uppsala University, 752 36 Uppsala, Sweden
7. Theoretical Chemistry and Biology, School of Chemistry, Biotechnology and Health, KTH Royal Institute of Technology, SE-10044 Stockholm, Sweden