Category: 92361-49-4

92361-49-4, Name is Chloro(pentamethylcyclopentadienyl)bis(triphenylphosphine)ruthenium(II), molecular formula is C46H45ClP2Ru, belongs to ruthenium-catalysts compound, is a common compound. In a patnet, once mentioned the new application about 92361-49-4, category: ruthenium-catalysts

New series of platinum group metal complexes bearing eta5- and eta6-cyclichydrocarbons and Schiff base derived from 2-acetylthiazole: Syntheses and structural studies

The mononuclear complexes [(eta6-arene)Ru(ata)Cl]PF6{ata = 2-acetylthiazole azine; arene = C6H6[(1)PF6]; p-iPrC6H4Me [(2)PF6]; C6Me6[(3)PF6]}, [(eta5-C5Me5)M(ata)]PF6{M = Rh [(4)PF6]; Ir [(5)PF6]} and [(eta5-Cp)Ru(PPh3)2Cl] {eta5-Cp = eta5-C5H5[(6)PF6]; eta5-C5Me5(Cp*) [(7)PF6]; eta5-C9H7(indenyl); [(8)PF6]} have been synthesised from the reaction of 2-acetylthiazole azine (ata) and the corresponding dimers [(eta6-arene)Ru(mu-Cl)Cl]2, [(eta5-C5Me5)M(mu-Cl)Cl]2, and [(eta5-Cp)Ru(PPh3)2Cl], respectively. In addition to these complexes a hydrolysed product (9)PF6, was isolated from complex (4)PF6in the process of crystallization. All these complexes are isolated as hexafluorophosphate salts and characterized by IR, NMR, mass spectrometry and UV-Vis spectroscopy. The molecular structures of [2]PF6and [9]PF6have been established by single-crystal X-ray structure analyses.

Balanced chemical reaction does not necessarily reveal either the individual elementary reactions by which a reaction occurs or its rate law.category: ruthenium-catalysts. In my other articles, you can also check out more blogs about 92361-49-4

Reference£º
Highly efficient and robust molecular ruthenium catalysts for water oxidation,
Catalysts | Special Issue : Ruthenium Catalysts – MDPI

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Concurrent tandem living radical polymerization: Gradient copolymers via in situ monomer transformation with alcohols

(Chemical Equation Presented) We developed concurrent tandem living radical polymerization as a novel methodology to efficiently, conveniently, and in one-pot produce gradient copolymers via in situ monomer transformation. The key is to employ a metal alkoxide [Al(Oi-Pr)3, Ti(Oi-Pr)4] and an alcohol solvent (ROH) in ruthenium-catalyzed polymerization of conventional ester-based methyl (meth)acrylate [M(M)A], where the monomer was directly transformed into R(M)A via in situ transesterification to gradually vary the monomer composition during the copolymerization. Typically, methyl methacrylate (MMA) was polymerized with a ruthenium catalyst in the presence of excess ethanol (EtOH) and Al(Oi-Pr)3 cocatalyst to give well-controlled gradient copolymers from MMA to EMA along the polymer chain, in which the original MMA was gradually converted into ethyl methacrylate (EMA) by the cocatalyst. This concurrent tandem polymerization, in conjunction with a wide variety of alcohols, efficiently and conveniently produced various gradient copolymers including long alkyl chain and PEG pendent groups. The obtained copolymers further exhibited unique physical properties different from the corresponding random and block counterparts.

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Reference£º
Highly efficient and robust molecular ruthenium catalysts for water oxidation,
Catalysts | Special Issue : Ruthenium Catalysts – MDPI

Chemistry is an experimental science, and the best way to enjoy it and learn about it is performing experiments.Introducing a new discovery about 92361-49-4, Name is Chloro(pentamethylcyclopentadienyl)bis(triphenylphosphine)ruthenium(II), Formula: C46H45ClP2Ru.

Synthesis, catalytic properties and biological activity of new water soluble ruthenium cyclopentadienyl PTA complexes [(C5R5)RuCl(PTA)2] (R = H, Me; PTA = 1,3,5-triaza-7-phosphaadamantane).

The new water soluble ruthenium complexes [(C5R5)RuCl(PTA)2] (R = H, Me; PTA = 1,3,5-triaza-7-phosphaadamantane) were synthesised and characterised. Their evaluation as regioselective catalysts for hydrogenation of unsaturated ketones in aqueous biphasic conditions and as cytotoxic agents towards the TS/A adenocarcinoma cell line is briefly presented.

Balanced chemical reaction does not necessarily reveal either the individual elementary reactions by which a reaction occurs or its rate law.Formula: C46H45ClP2Ru. In my other articles, you can also check out more blogs about 92361-49-4

Reference£º
Highly efficient and robust molecular ruthenium catalysts for water oxidation,
Catalysts | Special Issue : Ruthenium Catalysts – MDPI

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Scope and mechanistic investigations on the solvent-controlled regio- and stereoselective formation of enol esters from the ruthenium-catalyzed coupling reaction of terminal alkynes and carboxylic acids

The ruthenium-hydride complex (PCy3)2(CO)RuHCl was found to be a highly effective catalyst for the alkyne-to-carboxylic acid coupling reaction to give synthetically useful enol ester products. A strong solvent effect was observed for the ruthenium catalyst in modulating the activity and selectivity; the coupling reaction in CH2Cl2 led to the regioselective formation of gcm-enol ester products, while the stereoselective formation of (Z)-enol esters was obtained in THF. The coupling reaction was found to be strongly inhibited by PCy3. The coupling reaction of both PhCO2H/ PhC?CD and PhCO2D/ PhC?CH led to extensive deuterium incorporation on the vinyl positions of the enol ester products. An opposite Hammett value was observed when the correlation of a series of para-substituted p-X-C6H 4CO2H (X = OMe, CH3, H, CF3, CN) with phenylacetylene was examined in CDCl3(rho = +0.30) and THF(rho = -0.68). Catalytically relevant Ru-carboxylate and -vinylidenecarboxylate complexes, (PCy3)2(CO)(Cl) Ru(kappa2-O2CC6H4-p-OMe) and (PCy3)2(CO)(Cl)RuC(=CHPh)O2CC6H 4-p-OMe, were isolated, and the structure of both complexes was completely established by X-ray crystallography. A detailed mechanism of the coupling reaction involving a rate-limiting C-O bond formation step was proposed on the basis of these kinetic and structural studies. The regioselective formation of the gem-enol ester products in CH2Cl2 was rationalized by a direct migratory insertion of the terminal alkyne via a Ru-carboxylate species, whereas the stereoselective formation of (Z)-enol ester products in THF was explained by invoking a Ru-vinylidene species.

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Reference£º
Highly efficient and robust molecular ruthenium catalysts for water oxidation,
Catalysts | Special Issue : Ruthenium Catalysts – MDPI

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Ruthenium-catalyzed intramolecular amination reactions of aryl-and vinylazides

The catalytic activity of a series of ruthenium complexes for C-H amination reactions of organic azides was investigated. The most active catalyst was found to be RuCl3, which promotes C-H amination reactions of ortho-aryl phenylazides, l-azido-2-arylvinylazides, and 1-azido-1,3-butadienes to give carbazoles, indoles, and pyrroles, respectively. Both computational and experimental results support that a two-step process involving formal electrocyclization is involved in the catalytic reaction.

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Reference£º
Highly efficient and robust molecular ruthenium catalysts for water oxidation,
Catalysts | Special Issue : Ruthenium Catalysts – MDPI

Application of 92361-49-4. Chemistry is an experimental science, and the best way to enjoy it and learn about it is performing experiments.Introducing a new discovery about 92361-49-4, Name is Chloro(pentamethylcyclopentadienyl)bis(triphenylphosphine)ruthenium(II)

Dimerisation and reactivity of HCCCCFc at ruthenium centres

In contrast to the simple diynyl complexes formed in reactions between HCCCCFc and MCl(dppe)Cp; (M = Fe, Ru), an analogous reaction with RuCl(PPh 3)2Cp; in the presence of KPF6 and dbu resulted in dimerisation of the diyne at the Ru centre to afford a mixture of [Ru{eta1,eta2-C(CCFc)C(L)CHCCCHFc}(PPh 3)Cp]PF6 (L = dbu 1, PPh3 2). Similar reactions with RuCl(PR3)2L gave [Ru{eta1, eta2-C(CCFc)C(dbu)CHCCCHFc}(PR3)L]PF6 (L = Cp, R = Ph 3, m-tol 4; L = eta5-C9H7, R = Ph 5). The reaction between 3 and I2, followed by crystallization of the paramagnetic product from MeOH, afforded the dicationic [Ru{C(CCFc)C(dbu) CHC(OMe)C(OMe)CHFc}(PPh3)Cp](I3)2 6. The molecular structures of 2¡¤2CH2Cl2 and 6.S (S = 2CH2Cl2, C6H6) were determined by single-crystal XRD studies.

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Reference£º
Highly efficient and robust molecular ruthenium catalysts for water oxidation,
Catalysts | Special Issue : Ruthenium Catalysts – MDPI

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Synthesis, protonation, and reduction of ruthenium-peroxo complexes with pendent nitrogen bases

Cyclopentadienyl and pentamethylcyclopentadienyl ruthenium(II) complexes have been synthesized with cyclic (RPCH2NRCH2)2 ligands, with the goal of using these [CpRRu(PR 2NR2)]+ complexes for catalytic O2 reduction to H2O (R = t-butyl, phenyl; R = benzyl, phenyl; R? = methyl, H). In each compound, the Ru is coordinated to the two phosphines, positioning the amines of the ligand in the second coordination sphere where they may act as proton relays to a bound dioxygen ligand. The phosphine, amine, and cyclopentadienyl substituents have been systematically varied in order to understand the effects of each of these parameters on the properties of the complexes. These CpR?Ru(PR 2NR2)+ complexes react with O 2 to form eta2-peroxo complexes, which have been characterized by NMR, IR, and X-ray crystallography. The peak reduction potentials of the O2 ligated complexes have been shown by cyclic voltammetry to vary as much as 0.1 V upon varying the phosphine and amine. In the presence of acid, protonation of these complexes occurs at the pendent amine, forming a hydrogen bond between the protonated amine and the bound O 2. The ruthenium-peroxo complexes decompose upon reduction, precluding catalytic O2 reduction. The irreversible reduction potentials of the protonated O2 complexes depend on the basicity of the pendent amine, giving insight into the role of the proton relay in facilitating reduction.

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Reference£º
Highly efficient and robust molecular ruthenium catalysts for water oxidation,
Catalysts | Special Issue : Ruthenium Catalysts – MDPI

The reaction rate of a catalyzed reaction is faster than the reaction rate of the uncatalyzed reaction at the same temperature.92361-49-4, Name is Chloro(pentamethylcyclopentadienyl)bis(triphenylphosphine)ruthenium(II), molecular formula is C46H45ClP2Ru. In a Article£¬once mentioned of 92361-49-4, category: ruthenium-catalysts

H-C Bond Cleavage by (nu5-Cyclopentadienyl)bis(triorganylphosphine)ruthenium Organyl Complexes

Ruthenium(II) complexes of the type Cp(MenPh3-nP)2RuR with R = CH3, and R = CH2CMe3 have been prepared from the appropriate ruthenium chloride and alkyllithium or alkylmagnesium chloride.Of the methyl complexes having at least one phenyl group in the phosphane ligand, 17 reacts at 20 deg C and 14, 19, and 21 upon warming by intramolecular H-C(phenyl) bond cleavage and elimination of methane to give the ortho-metallated products Cp(MenPh3-nP) 15, 18, 20, and 22.The neopentyl ruthenium complexes 23, 25, 32, 34, and 36 react in an intermolecular manner with benzene by H-C(benzene) bond cleavage and elimination of neopentane to give the phenylruthenium compounds 24, 26, 33, 35, and 37.Whereas the Me3P-complex 36 as well as (C5H5)(Me3P)(Ph3P)RuCH2CMe3 (30) react with benzene to give neopentane and the phenyl complexes 37 and 31, the complexes 23, 25, 32, and 34 react to give undeuterated neopentane and the phenyl compounds 24, 26, 33, and 35.The phenyl complex 24 and the ruthenium compounds having benzyl (34) or p-tolyl groups (40) react with toluene to give an equilibrium mixture of the m- and p-tolyl complexes 38 and 40.H-C(arene) bond cleavage is also observed with other aromatic compounds such as phenyl bromide or naphthalene.In the case of 36 bond cleavage occurs selectively in the position meta to the substituent to give 42 and 43.Styrene, in contrast, reacts with 36 with cleavage of the vinylic 1(E)-H-C bond to give 44, while ethylene reacts to give the (nu2-ethylene)-vinylruthenium complex 45, which upon warming isomerizes with ethylene insertion into the vinyl-Ru bond to give the nu3-1-methylallyl compound 46. – In the H-C bond cleavage reaction, (C5Me5)Ru complexes are more reactive than the corresponding systems with a C5H5 group, and in both series the reactivity decreases with increasing basicity of the phosphine ligand. – The crystal structure analysis of Cp(Ph3P)(Me3P)RuCH2CMe=CH2 (13) is described.

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Reference£º
Highly efficient and robust molecular ruthenium catalysts for water oxidation,
Catalysts | Special Issue : Ruthenium Catalysts – MDPI

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Reaction of Cp*RuCl(PPh3)2 with dioxygen and formation of a neutral complex Cp*RuCl(O2)(PPh3)

Reaction of Cp*RuCl(PPh3)2 (1) with atmospheric oxygen occurs at room temperature in the presence of acetone or methylene chloride leading to Cp*RuCl(O2)(PPh3) (2). This complex is remarkably stable in the solid state and it can also release, under not unduly harsh conditions, the activated oxygen molecule, which can oxidize the phosphite L = MeOP[ (OCHMe)2CH2] to the corresponding phosphate, along with formation of the mono- and disubstituted Cp*RuCl (PPh3)(L) (5), Cp*RuCl(L)2 (6) and [Cp*RuCl(PPh3)(L)2]Cl (7), complexes. Structural information of phosphite derivatives 5 and 6 has been obtained by X-ray diffraction.

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Reference£º
Highly efficient and robust molecular ruthenium catalysts for water oxidation,
Catalysts | Special Issue : Ruthenium Catalysts – MDPI

The reaction rate of a catalyzed reaction is faster than the reaction rate of the uncatalyzed reaction at the same temperature.92361-49-4, Name is Chloro(pentamethylcyclopentadienyl)bis(triphenylphosphine)ruthenium(II), molecular formula is C46H45ClP2Ru. In a Article£¬once mentioned of 92361-49-4, HPLC of Formula: C46H45ClP2Ru

Atom transfer radical additions with the cationic half-sandwich complex [Cp*Ru(PPh3)2(CH3CN)]OTf

The cationic ruthenium half-sandwich complex [Cp*Ru(PPh 3)2(CH3CN)][OTf] (2) (Cp* = eta5-C5Me5, OTf = SO3CF 3) was synthesized by reduction of [Cp*RuCl2] 2 with zinc in the presence of NaOTf and subsequent reaction with PPh3. When NaOTf was omitted, the corresponding tetrachlorozincate salts were obtained. Complex 2, as well as the salts [Cp*Ru(CH 3CN)3]2[ZnCl4] (3) and [Cp*Ru(PPh3)2-(CH3CN)] 2[ZnCl4] (4), were characterized by single-crystal X-ray analysis. Complex 2 proved to be a potent catalyst for the atom transfer radical addition of CCl4 and CHCl3 to terminal olefins, displaying a performance superior to that of the previously described neutral catalyst [Cp*RuCl(PPh3)2]. For the addition of CHCl3 to styrene, a total turnover number of 890 was achieved. Wiley-VCH Verlag GmbH & Co. KGaA, 2005.

Note that a catalyst decreases the activation energy for both the forward and the reverse reactions and hence accelerates both the forward and the reverse reactions.HPLC of Formula: C46H45ClP2Ru, you can also check out more blogs about92361-49-4

Reference£º
Highly efficient and robust molecular ruthenium catalysts for water oxidation,
Catalysts | Special Issue : Ruthenium Catalysts – MDPI