Stable Carbenes [Carbon-Donor Ligands] — contains free N-heterocyclic carbenes (NHC) such as imidazolylidene and imidazolidinylidene derivatives with various aryl and alkyl substituents. These carbon-donor ligand groups donate strong electron pairs to the transition metal center, forming stable catalytic complexes.
These stable carbenes are used by catalysis researchers to prepare NHC-metal complexes that act in cross-coupling reactions such as Suzuki, Negishi, and Buchwald-Hartwig, as well as olefin metathesis. Variations of aryl groups such as 2,6-diisopropylphenyl or mesityl affect the steric and electronic properties of the ligand, thereby determining the selectivity and activity of the resulting catalyst.
Example products in this collection: TCI B3506 258278-28-3 1,3-Bis(2,6-diisopropylphenyl)imidazolidin-2-ylidene, TCI D3472 157197-53-0 1,3-Di-tert-butylimidazol-2-ylidene, TCI B3465 244187-81-3 1,3-Bis(2,6-diisopropylphenyl)imidazol-2-ylidene, TCI D3870 141556-42-5 1,3-Dimesitylimidazol-2-ylidene.
Because they are sensitive to air and moisture, handling and storage under inert conditions need to be observed, in addition to the suitability of the steric substituent groups with the target metal system. All products are genuine Tokyo Chemical Industry (TCI) Japan products, with purity, packaging, and storage conditions listed on each item's page.
Other parallel categories under N-Heterocyclic Carbene (NHC) Ligands [Cross-coupling Reaction using Transition Metal Catalysts], often used together in one laboratory workflow:
Back to N-Heterocyclic Carbene (NHC) Ligands [Cross-coupling Reaction using Transition Metal Catalysts]. For large-volume procurement, special packaging, or specific grades, contact the AMI Scientific team — the official TCI distributor in Indonesia — to check availability and lead times directly from Japan.
