1. Department
of Chemistry, Durham University, Durham DH1 3LE, United Kingdom
2. Interdisciplinary
Center for Molecular Materials, Department of Chemistry and Pharmacy, Friedrich-Alexander-Universität Erlangen-Nürnberg, Egerlandstrasse 3, 91058 Erlangen, Germany
3. Computer-Chemie-Centrum
and Interdisciplinary Center for Molecular Materials, Department of
Chemistry and Pharmacy, Friedrich-Alexander-Universität Erlangen-Nürnberg, Nägelsbachstrasse 25, 91052 Erlangen, Germany