1. Institute for Organic and Analytical Chemistry/MAPEX Center for, Materials and Processes University of Bremen Leobener Str. 7/ Bibliothekstr. 1 28359 Bremen Germany
2. Institute for Inorganic Chemistry and Crystallography/, MAPEX Center for Materials and Processes University of Bremen Leobener Str. 7/Bibliothekstr. 1 28359 Bremen Germany
3. Otto-Diels-Institute for Organic Chemistry University of Kiel Otto-Hahn-Platz 4 24098 Kiel Germany