Used as a precursor for N-heterocyclic carbene (NHC) ligands in organometallic catalysis. Its bulky cyclooctyl and mesityl groups enhance steric protection around metal centers, improving catalyst stability and selectivity. Commonly applied in cross-coupling reactions, olefin metathesis, and hydrogenation processes. The chloride counterion facilitates easy substitution for various metal complexes. Effective in both academic research and industrial catalytic systems due to its tunable electronic and steric properties.