1. Department of Chemistry and Biochemistry, University of Bern, Freiestrasse 3, 3012 Bern, Switzerland
2. Cambridge Crystallographic Data Centre, 12 Union Road, Cambridge CB2 1EZ, United Kingdom
3. Computational Carbon Chemistry Group, Heidelberg Institute for Theoretical Studies (HITS gGmbH), 69118 Heidelberg, Germany
4. Interdisciplinary Center for Scientific Computing, Heidelberg University, 69120 Heidelberg, Germany
5. Department of Chemistry, Materials and Chemical Engineering, Polytechnic of Milan, via Mancinelli 7, 20131, Milan, Italy