1. Bayerisches Geoinstitut; University of Bayreuth; 95440 Bayreuth Germany
2. Laboratory of Crystallography; University of Bayreuth; 95440 Bayreuth Germany
3. Materials Modeling and Development Laboratory; National University of Science and Technology “MISIS”; 119049 Moscow Russia
4. ESRF; 38000 Grenoble France
5. Deutsches Elektronen-Synchrotron (DESY); 22607 Hamburg Germany
6. Max Planck Institute for Solid State Research; 70569 Stuttgart Germany
7. Institute of Inorganic Chemistry; University of Bonn; 53121 Bonn Germany