1. Department of Chemistry
2. The Lise Meitner-Minerva Center of Computational Quantum Chemistry
3. Bar-Ilan University
4. Ramat-Gan 52900
5. Israel
6. Institute of General and Inorganic Chemistry
7. Bulgarian Academy of Sciences
8. Sofia 1113
9. Bulgaria
10. Department of Materials Engineering
11. Ben-Gurion University of the Negev
12. Beer-Sheva 84105