1. Department Chemie Ludwig-Maximilians-Universität Butenandtstrasse 5–13 (D) 1377 München Germany
2. Faculty for Chemistry and Biochemistry Chair of Inorganic Chemistry I – Bioinorganic Chemistry Ruhr University Bochum Universitätsstrasse 150 44801 Bochum Germany
3. Institute of Physical and Theoretical Chemistry University Regensburg Universitätsstrasse 31 3053 Regensburg Germany