Berichtigung: Radical trans-Hydroboration of Alkynes with N-Heterocyclic Carbene Boranes In the reference section of this Communication, reference [2] contains incorrect information. And on page S4-S27, " B IR b (CaF, thin film, cm SP -1 sp )" should be read as " B IR b (CaF SB 2 sb , thin film, cm SP -1 sp )".