1. Inorganic Chemistry and Centre for Nanointegration Duisburg-Essen (CENIDE), University of Duisburg-Essen, Essen 45117, Germany
2. Ernst-Ruska Centre for Microscopy and Spectroscopy with Electrons, Forschungszentrum Jülich GmbH, Jülich 52428, Germany
3. Organic Chemistry, University of Duisburg-Essen, Essen 45117, Germany
4. Structural and Medicinal Biochemistry, University of Duisburg-Essen, Essen 45117, Germany
5. Institute of Physics, University of São Paulo, São Paulo 05508-090, Brazil
6. Max-Planck-Institut für Kohlenforschung, Kaiser-Wilhelm-Platz 1, Mülheim an der Ruhr 45470, Germany