Nickelacarborane-Supported Bis--heterocyclic Carbenes.

Metallacarboranes have attracted significant attention due to their unique properties. Considerable efforts have been made on the reactions around the metal centers or the metal ion itself, while transformations of functional groups of the metallacarboranes have been much less explored. We presented here the formation of imidazolium-functionalized nickelacarboranes (), their subsequent conversion to nickelacarborane-supported -heterocyclic carbenoids (NHCs, ), and the reactivities of toward Au(PPh)Cl and Se powder, which resulted in the formation of bis-gold carbene complexes () and NHC selenium adducts ().

Cyclic Carbonate Synthesis from Epoxides and CO Catalyzed by Aluminum-Salen Complexes Bearing a -CB Carborane Ligand.

The active and well-designed Schiff base ligands are considered "privileged ligands". The so-called salen ligands, i.e.