1. Department of Chemistry and Pharmacy & Interdisciplinary Center for Molecular Materials, Friedrich-Alexander-Universität Erlangen-Nürnberg, 91058 Erlangen, Germany
2. Department of Chemistry, New York University, New York, New York 10003, United States
3. Department of Chemistry, Clemson University, Clemson, South Carolina 29634, United States
4. Department of Chemistry, University of Texas at El Paso, El Paso, Texas 79968-0519, United States
5. Computer-Chemie-Centrum, University of Erlangen, 91052 Erlangen, Germany