1. Max Planck Institute for Solid State Research, Heisenbergstrasse 1, 70569 Stuttgart, Germany
2. State Academy of Art and Design, Am Weißenhof 1, 70191 Stuttgart, Germany
3. Institute for Inorganic Chemistry, University of Stuttgart, Pfaffenwaldring 55, 70569 Stuttgart, Germany
4. Department of Chemistry, Ludwig Maximilian University of Munich, Butenandtstrasse 5-13, 81377 Munich, Germany
5. Deutsches Elektronen-Synchtrotron (DESY), Notkestraße 85, 22607 Hamburg, Germany