A catalyst don’t appear in the overall stoichiometry of the reaction it catalyzes, but it must appear in at least one of the elementary reactions in the mechanism for the catalyzed reaction. 32993-05-8, Name is Chlorocyclopentadienylbis(triphenylphosphine)ruthenium(II), molecular formula is C41H35ClP2Ru. In a Article£¬once mentioned of 32993-05-8, Product Details of 32993-05-8
Synthesis of ruthenium vinylidene complexes with dppe ligand and their cyclopropenation reaction
A number of cationic ruthenium vinylidene complexes [Ru]=C=C(Ph)CH2R+ ([Ru]=(eta5-C5H5)(dppe)Ru, dppe=Ph2PCH2CH2PPh2, 5a, R=CN; 5b, R=C6F5; 5c, R=Ph; 5d, R=p-C6H4CN; 5e, R=p-C6H4CF3; 5f, R=1-C10H7; 5g, R=CO2CH3) are prepared from electrophilic addition of organic halides to the acetylide complex [Ru]-CCPh at the boiling point of CHCl3. Complex 5g?, prepared at room temperature, displays similar spectroscopic property as that of 5g but is easily hydrolyzed to give [Ru]COCH2Ph (6). Cyclopropenation of the organic vinylidene moiety of 5a-5f is accomplished in acetone by deprotonation of 5 with n-Bu4NOH yielding the neutral cyclopropenyl complexes (7a, R=CN; 7b, R=C6F5; 7c, R=Ph; 7d, R=p-C6H4CN; 7e, R=p-C6H4CF3; 7f, R=1-10H7). Protonation of 7b-7f regenerates the corresponding vinylidene complexes. In the presence of allyl iodide, opening of the three-membered ring of 7a, followed by a subsequent oxidative coupling reaction, gives a dimeric dicationic product {[Ru]=C=C(Ph)-CHCN}2+2 (9a). In the processes of preparing the starting material Cp(dppe)RuCl for the acethylide complex, two dppe complexes Ru(dppe)2Cl2 (2) and [Cp(dppe)RuCl]2 (3) are isolated. Molecular structures of complexes 2, 3, 6, and 7b have been confirmed by X-ray diffraction analysis.
Sometimes chemists are able to propose two or more mechanisms that are consistent with the available data.Product Details of 32993-05-8, If a proposed mechanism predicts the wrong experimental rate law, however, the mechanism must be incorrect.Welcome to check out more blogs about 32993-05-8, in my other articles.
Reference£º
Highly efficient and robust molecular ruthenium catalysts for water oxidation,
Catalysts | Special Issue : Ruthenium Catalysts – MDPI