N-Heterocyclic Carbene Complexes of Cobalt

N-heterocyclic carbenes (NHCs) have become ubiquitous ligands across the Periodic Table and enjoy a growing impact on various aspects of the coordination, organometallic and catalytic chemistry of the 3d metals in particular, both from the fundamental viewpoint but also in applications, including catalysis, photophysics, bioorganometallic chemistry, materials etc. More specifically, this Chapter aims at a comprehensive coverage of the development and state of the art of cobalt NHC complexes. It is based on a recently published review on this topic (in Chem. Rev. 2019, 119, 3730 − 3961) and provides an update covering the literature until the end of 2020.