A luminescent bimetallic AuI complex comprised of N‐heterocyclic carbene (NHC) and carbazole (Cz) ligands, that is, (NHC’)Au(NHC)AuCz has been synthesized and studied. Both carbene ligands in the bimetallic complex act as electron acceptors in tandem to increase the energy separation between the ground and excited state, which is higher than those found in either monometallic analogue, (NHC)AuCz and (NHC’)AuCz. A coplanar geometry designed into the tandem complex ensures sufficient electronic coupling between the π‐orbitals of the ligands to impart a strong oscillator strength to the singlet intra‐ligand charge‐transfer (1ICT) transition. Theoretical modelling indicates that the emissive ICT excited state involves both NHC ligands. The tandem complex gives blue luminescence (λmax=480 nm) with a high photoluminescent quantum yield (ΦPL=0.80) with a short decay lifetime (τ=0.52 μs). Temperature‐dependent photophysical studies indicate that emission is via thermally assisted delayed fluorescence (TADF) and give a small singlet‐triplet energy difference (ΔEST=50 meV, 400 cm−1) consistent with the short TADF lifetime.

The zinc hydride compound, [Bptm]ZnH, is a catalyst for hydroboration of CO2 and carbonyl compounds.

The zerovalent carbodiphosphorane, (Ph3P)2C, reacts with Me3Al and Me3Ga to afford the adducts, [(Ph3P)2C]MMe3 (M = Al, Ga), whereas Me2Zn and Me2Mg react to afford mononuclear and dinuclear cyclometalated derivatives.

The mesoionic compound (1,4-diphenyl-1,2,4-triazol-4-ium-3-yl)phenylazanide, commonly referred to as Nitron, has been employed as a "crypto-NHC" to afford 1,2,4-triazolylidene compounds of nickel, palladium, and iridium. Specifically, Nitron reacts with NiBr 2 , PdCl 2 , and [Ir(COD)Cl] 2 to afford the Nheterocyclic carbene complexes (Nitron NHC ) 2 NiBr 2 , (Nitron NHC ) 2 PdCl 2 , and (Nitron NHC )Ir(COD)Cl, respectively. The lattermost compound reacts with (i) CO to afford the dicarbonyl compound (Nitron NHC )Ir(CO) 2 Cl and (ii) CO, in the presence of PPh 3 , to afford the monocarbonyl compound (Nitron NHC )Ir(PPh 3 )-(CO)Cl. Structural studies on (Nitron NHC )Ir(COD)Cl and (Nitron NHC )Ir(CO) 2 Cl indicate that Nitron NHC has a stronger trans influence than does Cl; furthermore, IR spectroscopic studies on (Nitron NHC )Ir(CO) 2 Cl indicate that Nitron NHC is electronically similar to the structurally related Enders carbene but is less electron donating than imidazol-2-ylidenes with aryl substituents. Significantly, the Nitron NHC ligand affords catalytic systems, as illustrated by the ability of (Nitron NHC )Ir(CO) 2 Cl to effect (i) the dehydrogenation of formic acid, (ii) aldehyde hydrosilylation, (iii) dehydrocoupling of hydrosilanes and alcohols, and (iv) ketone reduction via transfer hydrogenation.