1. Solid State Chemistry Faculty of Chemistry, University of Bochum 44780 Bochum, Germany, Fax: (+49) 234–3214–558
2. Hamburger Synchrotronstrahlungslabor (HASYLAB) Deutsches Elektronen‐Synchrotron (DESY) Notkestrasse 85, 22603 Hamburg, Germany
3. Department of Zoology, University of Hamburg Martin‐Luther‐King‐Platz 3, 20146 Hamburg, Germany