The Royal Society of Chemistry
Jonas Kühlborna, Ann-Kathrin Dannera,b, Holger Freya, Rishab Iyerc, Anthony J. Arduengo IIIc,*, and Till Opatz.a,* a Institute of Organic Chemistry, Johannes Gutenberg University, Duesbergweg 10−14, 55128 Mainz, Germany b Graduate School Materials Science in Mainz, Staudingerweg 9, 55128 Mainz