1. Department für Chemie, Universität zu Köln, Greinstr. 4-6, 50939 Köln, Germany
2. Institut Laue-Langevin, 71 Avenue des Martyrs, F-38042 Grenoble, France
3. Department of Inorganic Chemistry, Faculty of Science, Charles University in Prague, Hlavova 2030/8, 12843 Prague 2, Czech Republic
4. Structural and System Diagnostics, Research Centre Řež, Řež, Husinec 250 68, Czech Republic
5. Institute of Physics of the Czech Academy of Science, Na Slovance 2, Prague 182 21, Czech Republic
6. Jülich Centre for Neutron Science JCNS and Peter Grünberg Institut PGI, JARA-FIT, Forschungszentrum Jülich GmbH, 52425 Jülich, Germany