1. Faculty of Chemistry, University of Wrocław, Joliot-Curie 14, 50-383 Wrocław, Poland
2. Division of Theoretical Chemistry, Department of Physics, Chemistry and Biology (IFM), Linköping University, 581 83 Linköping, Sweden
3. Department of Chemistry, University College London (UCL), 20 Gordon Street, London WC1H 0A, United Kingdom