Reference of 301224-40-8, 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.301224-40-8, Name is (1,3-Dimesitylimidazolidin-2-ylidene)(2-isopropoxybenzylidene)ruthenium(VI) chloride, molecular formula is C31H38Cl2N2ORu. In a patent, introducing its new discovery.
A series of Ru-based olefin metathesis catalysts containing N,N?-diamidocarbenes (DACs) were synthesized and studied. X-ray crystallographic analysis revealed that the Ru-Ccarbene distances (1.938(5)-1.984(4) A) measured in the DAC-supported complexes were relatively short, particularly in comparison to the range of Ru-C carbene distances typically observed in analogous N-heterocyclic carbene (NHC) supported complexes (1.96-2.03 A). While the Tolman electronic parameters (TEP) of various DACs (2056-2057 cm-1) were calculated to be similar to that of PCy3 (2056 cm-1), the ring-closing metathesis (RCM) of diethyl diallylmalonate facilitated by DAC-supported Ru complexes proceeded at a relatively slow rate. However, unlike the phosphine-containing complexes, the DAC analogues catalyzed the RCM of diethyl dimethallylmalonate to its respective tetrasubstituted olefin. A series of electrochemical experiments revealed that the Ru complexes bearing a DAC ligand underwent oxidation at significantly higher potentials (DeltaE pa > 0.5 V) than analogous complexes containing phosphines and various N-heterocyclic carbenes (NHCs), including a tetrahydropyrimidinylidene, a saturated and strongly donating NHC analogue of the DAC. The relative catalytic activities observed were attributed to the steric properties of the aforementioned ligands.
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Reference：
Highly efficient and robust molecular ruthenium catalysts for water oxidation,
Catalysts | Special Issue : Ruthenium Catalysts – MDPI