1. Institute of Inorganic Chemistry I, Ulm University, Albert-Einstein-Allee 11, 89081 Ulm, Germany
2. Department Chemistry and Pharmacy, Chair of Inorganic and General Chemistry, Friedrich-Alexander-Universität Erlangen-Nürnberg, Egerlandstraße 1, 91058 Erlangen, Germany
3. Institute of Physical and Theoretical Chemistry, University Regensburg, Universitätsstraße 31, 93053 Regensburg, Germany
4. Institute of Inorganic and Analytical Chemistry, Friedrich-Schiller-University Jena, Lessingstraße 8–10, 07743 Jena, Germany