1. Faculty of Chemistry and Food Chemistry Technische Universität Dresden 01062 Dresden Germany
2. Mulliken Center for Theoretical Chemistry Institute for Physical and Theoretical Chemistry University of Bonn Beringstr. 4+6 53115 Bonn Germany
3. Department of Physical Chemistry University of Debrecen Egyetem tér 1 H-4032 Debrecen Hungary
4. Max Planck Institute for Chemical Physics of Solids Nöthnitzer Str. 40 01187 Dresden Germany