A reference reporting the Au⋯H-C hydrogen bonding in Au-NHC was inadvertently omitted from the original article. We apologize for any inconvenience this error may have caused, and we thank Dr. Dominique Matt from the Université de Strasbourg, Strasbourg, France, for alerting us to this omission. Reference 8 should be updated as shown in ref 1 below. © 2020 American Chemical Society.