1. Department of Chemistry, Chair of Inorganic Solid‐State Chemistry, University of Munich (LMU), Butenandtstraße 5–13 (D), 81377 München, Germany, http://www.cup.uni‐muenchen.de/ac/schnick/
2. Faculty of Chemistry and Mineralogy, Institute for Mineralogy, Crystallography and Materials Science, Leipzig University, Scharnhorststraße 20, 04275 Leipzig, Germany, http://www.uni‐leipzig.de/~imkm