1. Institute of Organic Chemistry II and Advanced MaterialsUniversity of Ulm Ulm Germany
2. Organic Chemistry II, Ruhr University BochumFaculty of Chemistry and Biochemistry Bochum Germany
3. Fachbereich Chemie, Anorganische ChemieTechnische Universität Kaiserslautern Kaiserslautern Germany
4. Department of Chemistry—Ångström laboratoriesUppsala University Uppsala Sweden