1. Inorganic Chemistry, Leipzig University, Johannisallee 23, 04103 Leipzig, Germany
2. Laboratory for Neutron Scattering and Imaging, Paul Scherrer Institut (PSI), 5232 Villigen, Switzerland
3. Department Structure and Dynamics of Energy Materials, Helmholtz-Zentrum Berlin (HZB) für Materialien und Energie, Hahn-Meitner-Platz 1, 14109 Berlin, Germany