N-heterocyclic germylenes NHGe have recently come of age. In the last few years, they emerged as mature ligands capable of functionalisation, chirality, electronic tuning and chelating bis-NHGe ligands. The review shows the major trends and developments of the last five years.
Keywords: N-heterocyclic germylenes, transition metal complexes, ligands, carbene analogues, annelation effect, electronic properties, Meller germylenes