1. Centre for Analysis and Synthesis, Department of Chemistry, Lund University, Box 124, SE-22100Lund, Sweden
2. Chemical Physics Division, Department of Chemistry, Lund University, Box 124, SE-22100Lund, Sweden
3. Theoretical Chemistry Division, Department of Chemistry, Lund University, Box 124, SE-22100Lund, Sweden
4. Department of Chemistry − Ångström Laboratory, Uppsala University, Box 523, SE-75120Uppsala, Sweden
5. Department of Physics − Ångström Laboratory, Uppsala University, Box 523, SE-75120Uppsala, Sweden
6. Department of Chemistry, University of Copenhagen, Universitetsparken 5, DK-2100Copenhagen, Denmark