1. Institute of Inorganic Chemistry, University of Göttingen, Tamannstrasse 4, D-37077 Göttingen, Germany
2. Institut de Química Computacional i Catàlisi (IQCC) & Department de Química, Universitat de Girona, 17003 Girona, Spain
3. ICREA, Pg. Lluís Companys 23, 08010 Barcelona, Spain
4. International Center for Advanced Studies of Energy Conversion (ICASEC), University of Göttingen, D-37077 Göttingen, Germany