1. Department of Chemistry; University of Paderborn; Warburger Str. 100, 33098 Paderborn Germany
2. Laboratory for Scientific Computing and Modelling; Paul Scherrer Institut; CH-5232 Villigen PSI Switzerland
3. Department of Physics; University of Paderborn; Warburger Str. 100, 33098 Paderborn Germany
4. Department of Chemistry and Center for Sustainable Systems Design; University of Paderborn; Warburger Str. 100, 33098 Paderborn Germany