1. Institute of Theoretical Chemistry, Faculty of Chemistry, University of Vienna, Währingerstr. 19, 1090 Vienna, Austria
2. Institute of Physics, University of Rostock, Albert-Einstein-Straße 23-24, 18059 Rostock, Germany
3. Department of Life, Light and Matter, University of Rostock, 18051 Rostock, Germany
4. Chemistry Department, Technical University of Munich, Lichtenbergstr. 4, Garching 85748, Germany
5. Institute of Physics, University of Kassel, Heinrich-Plett-Straße 40, 34132 Kassel, Germany