1. Institute
of Inorganic Chemistry, University of Regensburg, Universitätsstr. 31, 93040 Regensburg, Germany
2. Otto-Schott-Institut
für Materialforschung, Friedrich-Schiller-Universität Jena, Löbdergraben
32, 07743 Jena, Germany
3. Nikolaev Institute of Inorganic Chemistry SB RAS, Ak. Lavrentiev prosp. 3, 630090 Novosibirsk, Russia