1. Department of Chemistry and Pharmacy & Interdisciplinary Center for Molecular Materials, Friedrich-Alexander-Universität Erlangen Nürnberg, Egerlandstr. 3, 91058 Erlangen, Germany
2. Department of Chemistry and Pharmacy & Interdisciplinary Center for Molecular Materials, Friedrich-Alexander-Universität Erlangen Nürnberg, Nikolaus-Fiebiger-Str. 10, 91058 Erlangen, Germany
3. Department of Chemistry and Institute for Sustainability and Energy at Northwestern, Northwestern University, Evanston, Illinois 60208-3113, United States
4. Computer-Chemistry-Center, Department of Chemistry and Pharmacy, Friedrich-Alexander-Universität Erlangen-Nürnberg, Nägelsbachstr. 25, 91052 Erlangen, Germany
5. Department of Chemistry, University of Alberta, Edmonton, Alberta T6G 2G2, Canada