Compound 5

(E)-N-(1,3-bis(2,6-diisopropylphenyl)-1,3-dihydro-2H-imidazol-2-ylidene)-N'-(1-(2,6-diisopropylphenyl)-1H-imidazol-2-yl)-P-(4-isopropyl-1,1-dimethyl-1H-inden-3-yl)-P-methylphosphinimidic amide

From: Isolable dicarbon stabilized by a single phosphine ligand