1. Laboratory of Crystallography University of Bayreuth Universitätsstraße 30 95447 Bayreuth Germany
2. Institute of Crystallography RWTH Aachen University Jägerstraße 17–19 52066 Aachen Germany
3. Institute of Geosciences University of Potsdam Karl-Liebknecht-Straße 24–25 14476 Potsdam-Golm Germany
4. Department of Chemistry Aarhus University Langelandsgade 140 8000 Aarhus C Denmark