1. Institute of Physical Chemistry
2. University of Vienna
3. A-1090 Vienna
4. Austria
5. Christian Doppler Laboratory for Thermoelectricity
6. Institute of Solid State Physics
7. Vienna University of Technology
8. A-1040 Vienna
9. Masaryk University
10. Faculty of Science
11. Department of Chemistry
12. Brno 61137
13. Czech Republic
14. Institute of Mineralogy and Crystallography