Reference of 246047-72-3, Chemistry can be defined as the study of matter and the changes it undergoes. You’ll sometimes hear it called the central science because it is the connection between physics and all the other sciences, starting with biology.246047-72-3, Name is (1,3-Bis(2,4,6-trimethylphenyl)-2-imidazolidinylidene)dichloro(phenylmethylene)(tricyclohexylphosphine)ruthenium, molecular formula is C46H65Cl2N2PRu. In a patent, introducing its new discovery.
Novel metathesis catalysts that are derivatives of 8-vinylquinoline, (H2IMes)(Cl)2Ru(CH-kappa2(C,N)-8-C 9H6N) (1a; IWMes = 1,3-dimesityl-4,5-dihydroimidzol-2-ylidene), and 5-vinylquinoxaline, (H 2IMes)-(Cl)2Ru(CH-kappa2(C,N)-5-C 8H5N2) (2a), which possess five-membered chelate rings, were synthesized in ligand exchange reactions with (H 2)IMes(PCy3)(Cl)2Ru=CHPh. Both 1a and 2a are formed as complexes with the trans-dichloro geometry common for Grubbs-type complexes, while on prolonged storage in dichloromethane they isomerize to the thermodynamically favored cis-dichloro isomers (1b and 2b, respectively). The structures of compounds 1a,b were confirmed by X-ray analysis. The kinetics of trans to cis isomerization were measured by 1H NMR to give the rate constants k1a-1b = 3.2 × 10-2 h-1 and k2a?2b = 5.5 × 10-3 h-1 in dichloromethane-d2 at 23C. Investigations of the relative activities of these catalysts in model RCM and enyne reactions showed that catalyst la was faster than 1b (and 2a faster than 2b) but that 2a was faster than 1a.
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Reference：
Highly efficient and robust molecular ruthenium catalysts for water oxidation,
Catalysts | Special Issue : Ruthenium Catalysts – MDPI