1. Institute of Organic Chemistry, University Cologne, Greinstrasse 4, 50939, Köln, Germany
2. Institute for Organic Chemistry, University Würzburg, Würzburg, Germany
3. Ion Cyclotron Resonance Program, National High Magnetic Field Laboratory, Florida State University, Tallahassee, Florida, USA
4. Department of Chemistry and Biochemistry, Florida State University, 32306, Tallahassee, FL, USA