Ramollo, G KabeloStrydom, IanFernandes, Manuel A.Lemmerer, AndreasOjwach, Stephen O.Van Wyk, Juanita L.Bezuidenhout, Daniela Ina2020-10-222020-10-222020-03-26Ramollo, G.K., Strydom, I., Fernandes, M.A. 2020, 'Fischer carbene complexes of iridium(I) for application in catalytic transfer hydrogenation', Inorganic Chemistry, vol. 59, no. 7, pp. 4810−4815.0020-1669 (print)1520-510X (online)10.1021/acs.inorgchem.0c00079?ref=pdfhttp://hdl.handle.net/2263/76570New examples of the very rare class of iridium(I) Fischer carbene complexes (FCCs) are reported from the facile transmetalation from group 6 FCCs. Postcomplexation modification of either the carbene ligand or the ancillary coligands results in a tunable IrI metal center, for unprecedented application as a (pre)catalyst in a benchmark transfer hydrogenation reaction. The introduction of an aminocarbene ligand with a pendant N-donor moiety capable of hemilabile coordination yielded the best catalytic results with turnover frequencies reaching 445 h−1 and requiring 0.1 mol % catalyst and 0.5 mol % base loading, respectively.en© 2020 American Chemical Society This is an open access article published under a Creative Commons Attribution (CC-BY) License.Iridium(I)HydrogenationFacile transmetalationFischer carbene complex (FCC)Article