1. University of Bremen, Institute for Physical and Theoretical Chemistry, Leobener Str. NW2, D-28359 Bremen, Germany
2. Q-Chem, Inc., 6601 Owens Drive, Suite 105, Pleasanton, California 94588, USA
3. Bremen Center for Computational Materials Science, University of Bremen, Am Fallturm 1, D-28359 Bremen, Germany
4. MAPEX Center for Materials and Processes, University of Bremen, Bibliothekstr. 1, D-28359 Bremen, Germany