Reference of 131457-46-0, Catalysts allow a reaction to proceed via a pathway that has a lower activation energy than the uncatalyzed reaction. 131457-46-0, Name is (4S,4S)-2,2-(Propane-2,2-diyl)bis(4-phenyl-4,5-dihydrooxazole), SMILES is CC(C1=N[C@@H](C2=CC=CC=C2)CO1)(C3=N[C@@H](C4=CC=CC=C4)CO3)C, belongs to catalyst-ligand compound. In a article, author is Kim, R. Soyoung, introduce new discover of the category.
Rapid Electrochemical Methane Functionalization Involves Pd-Pd Bonded Intermediates
High-valent Pd complexes are potent agents for the oxidative functionalization of inert C-H bonds, and it was previously shown that rapid electrocatalytic methane monofunctionalization could be achieved by electro-oxidation of Pd-II to a critical dinuclear Pd-III intermediate in concentrated or fuming sulfuric acid. However, the structure of this highly reactive, unisolable intermediate, as well as the structural basis for its mechanism of electrochemical formation, remained elusive. Herein, we use X-ray absorption and Raman spectroscopies to assemble a structural model of the potent methane-activating intermediate as a Pd-III dimer with a Pd-Pd bond and a 5-fold O atom coordination by H2SO4(x-2) ligands at each Pd center. We further use EPR spectroscopy to identify a mixed-valent M-M bonded Pd-2(II,III) species as a key intermediate during the Pd-II-to-Pd-III, oxidation. Combining EPR and electrochemical data, we quantify the free energy of Pd dimerization as <-4.5 kcal/mol for Pd-2(II,III) and <-9.1 kcal/mol for P-2(III). The structural and thermochemical data suggest that the aggregate effect of metal-metal and axial metal-ligand bond formation drives the critical Pd dimerization reaction in between electrochemical oxidation steps. This work establishes a structural basis for the facile electrochemical oxidation of Pd-II to a M-M bonded Pd-III dimer and provides a foundation for understanding its rapid methane functionalization reactivity. Reference of 131457-46-0, Enzymes are biological catalysts that produce large increases in reaction rates and tend to be specific for certain reactants and products. I hope my blog about 131457-46-0 is helpful to your research.
Reference:
Metal catalyst and ligand design,
,Ligand Template Strategies for Catalyst Encapsulation – NCBI