1. Centre for Theoretical and Computational Chemistry, Department of Chemistry, University of Tromsø – The Arctic University of Norway, 9037 Tromsø, Norway
2. Theoretical Chemistry and Biology, School of Biotechnology, Royal Institute of Technology, AlbaNova University Center, S-10691 Stockholm, Sweden
3. PDC Center for High Performance Computing, Royal Institute of Technology, S-10044 Stockholm, Sweden
4. Department of Physics G. Occhialini, University of Milano Bicocca, Piazza della scienza 3, 20126 Milan, Italy
5. Centre for Theoretical and Computational Chemistry, Department of Chemistry, University of Oslo, P.O. Box 1033 Blindern, 0315 Oslo, Norway