1. Theoretical and Physical Chemistry Institute, National Hellenic Research Foundation, 48 Vassileos Constantinou Ave., 11635 Athens, Greece
2. Institute of Electronic Structure and Laser, Foundation for Research and Technology-Hellas, N. Plastira 100, 70013 Heraklion Crete, Greece
3. Department of Chemistry, University of Crete, Vasilika Vouton, 71003 Heraklion Crete, Greece
4. Department of Chemistry, University of Athens, Panepistimiopolis, Zografou, 15771 Athens, Greece