Tag: M.W:700-800

Synthetic Route of 32993-05-8, Children learn through play, and they learn more than adults might expect. Science experiments are a great way to spark their curiosity, get their minds active, and encourage them to do something that doesn’t involve a screen. 32993-05-8, C41H35ClP2Ru. A document type is Article, introducing its new discovery.

Half-sandwich ruthenium(II) PTA complexes bearing the 1,2-dihydropentalenyl (C8H9-, Dp) and indenyl (C9H 7-, Ind) ancillary ligands have been synthesized and characterized using multinuclear NMR spectroscopy and X-ray crystallography. The complexes DpRu(PTA)(PPh3)Cl, DpRu(PTA)2Cl, IndRu-(PTA)(PPh3)Cl, and [IndRu(PTA)2(PPh3)]CI were obtained in good to excellent yields. The solid-state structures of these compounds exhibit piano stool geometries with eta5-coordination of the indenyl and dihydropentalenyl moieties. DpRu(PTA)2Cl is water-soluble (S25C = 43 mg/mL), while the mixed phosphine compounds are slightly soluble in acidic solutions. The Ru-H complexes, Cp?Ru(PTA)(PPh3)H (Cp? = Ind, Cp), have been synthesized in good yield and spectroscopically and structurally characterized. The ruthenium hydrides undergo an H/D exchange reaction with CD3OD with relative rates CpRu(PTA)-(PPh3)H ? IndRu(PTA)(PPh3)H > CpRu(PTA)2H. The air-stable Cp?Ru(PTA)(PR3)Cl complexes (Cp? = Cp, Dp, Ind; PR3 = PPh3 or PTA) exhibit activity in the regioselective transfer hydrogenation of alpha,beta-unsaturated carbonyls in aqueous media with HCOONa, HCOOH, or isopropanol/Na2CO3 serving as the hydrogen source. They were found to be effective in the selective reduction of the carbonyl functionality of cinnamaldehyde and the C=C bond of benzylidene acetone and chalcone. IndRu(PTA)(PPh3)Cl was less active than Cp?Ru(PTA)(PPh3)Cl (Cp? = Cp or Dp). Results of the transfer hydrogenation of unsaturated substrates using CpRu(PTA)(PPh 3)H are also reported.

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

Synthetic Route of 14564-35-3, Catalysts are substances that increase the reaction rate of a chemical reaction without being consumed in the process. 14564-35-3, Name is Dichlorodicarbonylbis(triphenylphosphine)ruthenium(II), molecular formula is C38H34Cl2O2P2Ru. In a Patent，once mentioned of 14564-35-3

A haloalkylalkoxysilane is prepared by reacting an olefinic halide with an alkoxysilane in which the alkoxy group(s) contain at least two carbon atoms in the presence of a catalytically effective amount of ruthenium-containing catalyst. The process can be used to prepare, inter alia, chloropropyltriethoxysilane which is a key intermediate in the manufacture of silane coupling agents.

The proportionality constant is the rate constant for the particular unimolecular reaction. the reaction rate is directly proportional to the concentration of the reactant. I hope my blog about 14564-35-3 is helpful to your research., Synthetic Route of 14564-35-3

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

Related Products 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)

N-heterocyclic carbene complexes of ruthenium(II), [CpRu(L*)2Cl] (2) and [CpRu(CO)(L*)-Cl] (3) (Cp = eta5-C5H5; L* = l,3-dicyclohexyl-imidazolin-2-ylidene), have been obtained in high yields by reaction of [CpRu(PR2R?)2Cl] (R = R? = Ph, la; R = Ph, R? = 2-MeC6H4, 1b) and [CpRu(CO){PPh2(2-MeC6H4)}Cl] (1c), respectively, with the free carbene L*. The mixed dicarbene complex [CpRu(=CPh2)(L*)Cl] (4) is prepared from [CpRu(=CPh2){PPh2(2-MeC6H4-Cl] (1d) and an equimolar amount of L*, whereas subsequent reaction of 1d with L* leads to formation of 2, along with tetraphenylethene. The reaction of [Cp*Ru(PPh3)2Cl] (1e) with L* gives the pentamethylcyclopentadienyl derivative [Cp*Ru(PPh3)(L*)Cl] (5) (Cp* = eta5-C5Me5) by displacement of 1 equiv of PPh3 Complex 5 reacts in toluene with CO, pyridine (Py), and N2CHCO2Et, affording [Cp*Ru(CO)(L*)Cl] (6), [Cp*Ru(Py)(L*)Cl] (7), and the mixed dicarbene [Cp*Ru(=CHCO2Et)(L*)Cl] (8), which were isolated in high yields. The molecular structure of complex 6 has been determined by an X-ray investigation, and the carbene-ruthenium distance clearly indicates a single bond (2.0951(18) A). The N-heterocyclic carbene does not undergo substitution by other two-electron ligands.

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

Electric Literature of 92361-49-4, Catalysts are substances that increase the reaction rate of a chemical reaction without being consumed in the process. 92361-49-4, Name is Chloro(pentamethylcyclopentadienyl)bis(triphenylphosphine)ruthenium(II), molecular formula is C46H45ClP2Ru. In a Article£¬once mentioned of 92361-49-4

Pentamethylcyclopentadienyl ruthenium(II) complexes containing chiral diphosphines: Synthesis, characterisation and electrochemical behaviour. X-ray structure of (eta5-C5Me5)Ru{(S,S)-Ph 2PCH(CH3)CH(CH3)PPh;2}Cl

Some pentamethylcyclopentadienyl ruthenium(II) diphosphine chloride complexes have been prepared by ligand exchange starting with the parent triphenylphosphine derivatives and their reactivities compared with those of the corresponding cyclopentadienyl compounds. The pentamethyl ligand causes a greater extent of asymmetric induction when the (R)-prophos and (R)-phenphos ligands are used as well as a higher lability of the stereochemistry at the stereogenic ruthenium centre. A shift of about 200 mV in the oxidation potential is caused by the substitution at the penta-hapto ligand. The order of basicity of the diphosphine ligands was also evaluated and was found to be consistent with previous determinations. The crystal structure of (eta5-C5Me)Ru{(S,S)-chiraphos}C1 shows a coordination around the ruthenium atom similar to that found for the (eta5-C5H5)Ru{(S,S)-chiraphos}Cl complex.

The proportionality constant is the rate constant for the particular unimolecular reaction. the reaction rate is directly proportional to the concentration of the reactant. I hope my blog about 92361-49-4 is helpful to your research., Electric Literature of 92361-49-4

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

Electric Literature of 32993-05-8, Children learn through play, and they learn more than adults might expect. Science experiments are a great way to spark their curiosity, get their minds active, and encourage them to do something that doesn’t involve a screen. 32993-05-8, C41H35ClP2Ru. A document type is Article, introducing its new discovery.

Pyramidal stability of chiral-at-metal half-sandwich 16-electron fragments [CpRu(P-P?)]

The chiral-at-metal diastereomers (RRu,RC)- and (SRu,RC)-[CpRu(P-P?)Hal] (P-P? = (R)-Prophos and (R,R)-Norphos, Hal = Cl, Br, and I) were synthesized, separated, and characterized by X-ray crystallography. Halide exchange and epimerization reactions were studied in 9:1 and 1:1 chloroform/ methanol mixtures proceeding at room temperature or slightly above according to first-order. The rate-determining step in the Hal exchange reactions was the dissociation of the Ru-Hal bond, forming the pyramidal 16-electron intermediates (R Ru,RC)- and (SRu,RC)-[CpRu(P- P?)]+, which maintain the metal configuration. These intermediates can invert their metal configuration or react with nucleophiles with retention of the metal configuration. The measured competition ratios showed that the inversion of the intermediates was slow compared to quenching with nucleophiles, indicating a high pyramidal stability of the 16-electron fragments (RRu,RC)- and (SRu,R C)-[CpRu(P-P?)]+ toward inversion in agreement with a basilica-type energy profile. Stereochemically this implies that substitution reactions in (RRu,RC)- and (SRu,R C)-[CpRu(P-P?)Hall occur with predominant retention of configuration, however, accompanied by a well-defined share of inversion, a point overlooked when (RRu,RC)- and (SRu,R C)-[CpRu(Prophos)Cl] were extensively used as starting materials in the synthesis of a variety of organometallic derivatives. The rates of the approach to the epimerization equilibrium were much smaller than those of the Hal exchange reactions, because in the basilica-type energy profile the intermediates (RRu,RC)-/(SRu,R C)-[CpRu(P-P?)]+, formed in the cleavage of the Ru-Cl bond, have to cross another barrier of appreciable height for inversion. Increasing the methanol content of the solvent increased the rates of the Hal exchange and epimerization reactions. Obviously, the pyramidality of the fragments [CpRu(P-P?)]+ is enforced by the small P-Ru-P angles (83 in the Prophos derivatives and 86 in the Norphos derivatives of (RRu,RC)- and (SRu,RC)-[CpRu(P- P?)Hal]). Due to these small angles, intermediates (RRu,R C)- and (SRu,RC)-[CpRu(P-P&prime)] + resist planarization and thus inversion of the metal configuration.

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

Reference of 32993-05-8, Catalysts are substances that increase the reaction rate of a chemical reaction without being consumed in the process. 32993-05-8, Name is Chlorocyclopentadienylbis(triphenylphosphine)ruthenium(II), molecular formula is C41H35ClP2Ru. In a Article£¬once mentioned of 32993-05-8

Structural characterization of alkyne and vinylidene isomers of [Ru(C2H2)(PMe2Ph)2(Cp)][BF 4]

The reaction of [RuCl(PMe2Ph)2(Cp)] with ethyne and T1BF4 in dichloromethane leads to [Ru(n2-HC?CH)-(PMe2Ph)2(Cp)][BF 4] (2), an unusual n2-alkyne complex of a d6 metal center. This ethyne complex smoothly rearranges to its vinylidene isomer, [Ru(C=CH2)(PMe2Ph)2(Cp)] [BF4] (4), above ca. 60 C in acetone solution. The n2-ethyne to vinylidene conversion can also be carried out by deprotonation of 2 to give [Ru(C?CH2)(PMe2Ph)2(Cp)] (3), followed by protonation of 3 to give exclusively vinylidene isomer 4. Structures of both 2 and 4 were determined by X-ray diffraction. Aside from the difference in the geometry of the C2H2 ligands, the structures are nearly identical. Crystal data with Mo Kalpha (lambda = 0.7107 A) radiation at 297 K are as follows: 2, C23H29BF4P2Ru, a = 23.099 (3) A, b = 9.203 (2) A, c = 11.344 (3) A, orthorhombic space group Pca21 (No. 29), Z = 4, R = 0.054, Rw = 0.074; 4, C23H29BF4P2Ru, a = 23.270 (3) A, c = 9.290 (1) A, c – 11.3659 (8) A, orthorhombic space group Pca21 (No. 29), Z = 4, R = 0.035, Rw = 0.044.

The proportionality constant is the rate constant for the particular unimolecular reaction. the reaction rate is directly proportional to the concentration of the reactant. I hope my blog about 32993-05-8 is helpful to your research., Reference of 32993-05-8

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

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, SDS of cas: 32993-05-8

Synthetic and structural studies of some pyrazine bridged Ru(II) complexes

Reaction of [Ru(eta5-C5H5)Cl(L2)] (L2=(PPh3)2, (AsPh3)2, (SbPh3)2, dppm and dppe) with pyrazine have been carried out under varying reaction conditions. The resulting substitutional products have been characterized by elemental analyses and spectroscopic, (LR, UV, 1H, 13C, 31P NMR and FAB mass) studies.

Balanced chemical reaction does not necessarily reveal either the individual elementary reactions by which a reaction occurs or its rate law.SDS of cas: 32993-05-8. In my other articles, you can also check out more blogs about 32993-05-8

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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.32993-05-8, Name is Chlorocyclopentadienylbis(triphenylphosphine)ruthenium(II), molecular formula is C41H35ClP2Ru. In a Article£¬once mentioned of 32993-05-8, Safety of Chlorocyclopentadienylbis(triphenylphosphine)ruthenium(II)

Reactivity studies of cyclopentadienyl ruthenium(II), osmium(II) and pentamethylcyclopentadienyl iridium(III) complexes towards 2-(2?-pyridyl)imidazole derivatives

The reaction of [CpRu(PPh3)2Cl] and [CpOs(PPh3)2Br] with chelating 2-(2?-pyridyl)imidazole (N ? N) ligands and NH4PF6 yields cationic complexes of the type [CpM(N ? N)(PPh3)]+ (1: M = Ru, N ? N = 2-(2?-pyridyl)imidazole; 2: M = Ru, N ? N = 2-(2?-pyridyl)benzimidazole; 3: M = Ru, N ? N = 2-(2?-pyridyl)-4,5-dimethylimidazole; 4: M = Ru, N ? N = 2-(2?-pyridyl)-4,5-diphenylimidazole; 5: M = Os, N ? N = 2-(2?-pyridyl)imidazole; 6: M = Os, N ? N = 2-(2?-pyridyl)benzimidazole). They have been isolated and characterized as their hexafluorophosphate salts. Similarly, in the presence of NH4PF6, [Cp*Ir(mu-Cl)Cl]2 reacts in dry methanol with N ? N chelating ligands to afford in excellent yield [Cp*Ir(N ? N)Cl]PF6 (7: N ? N = 2-(2?-pyridyl)imidazole; 8: N ? N = 2-(2?-pyridyl)benzimidazole). All the compounds have been characterized by infrared and NMR spectroscopy and the molecular structure of [1]PF6, [2]PF6 and [7]PF6 by single-crystal X-ray structure analysis.

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

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, SDS of cas: 32993-05-8

Poly(alkylidenamines) dendrimers as scaffolds for the preparation of low-generation ruthenium based metallodendrimers

The aim of this article is to highlight the use of nitrile-functionalized poly(alkylidenamines) dendrimers as building blocks for the preparation of low-generation ruthenium based cationic metallodendrimers having in view potential biomedical applications. Air-stable poly(alkylidenamines) nitrile dendrimers, peripherally functionalized with the ruthenium moieties [Ru(eta5-C5H5)(PPh3) 2]+ or [RuCl(dppe)2]+, have been prepared, characterized and are being studied for their anticancer activity. The followed strategy is based on the biological advantages associated with low-generation dendrimers, the known activity of ruthenium compounds as anticancer drugs and the stability of these dendrimers at the physiological temperature.

Sometimes chemists are able to propose two or more mechanisms that are consistent with the available data.SDS of cas: 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

The reaction rate of a catalyzed reaction is faster than the reaction rate of the uncatalyzed reaction at the same temperature.32993-05-8, Name is Chlorocyclopentadienylbis(triphenylphosphine)ruthenium(II), molecular formula is C41H35ClP2Ru. In a Article£¬once mentioned of 32993-05-8, name: Chlorocyclopentadienylbis(triphenylphosphine)ruthenium(II)

Half-sandwich cyclopentadienyl ruthenium complexes of achiral and chiral diphosphazanes

Reaction of [CpRu(PPh3)2Cl] (1) {Cp = eta5-(C5H5)} with X2PN(CHMe2)PYY? {X = Y = Y? = Ph (L1); X = Y = Ph, Y? = OC6H4Me-4 (L4); X = Y = Ph, Y? = OC6H3Me2-3,5 (L5); X = Y = Ph, Y? = N2C3HMe2 (L6)} yields the cationic chelate complexes, [CpRu(eta2-(X2PN(CHMe2)PYY?))PPh3 ]Cl. On the other hand, the reaction of 1 with X2PN(CHMe2)-PYY? {X2 = YY? = O2C6H4(L2)} gives the complex, [CpRu(eta1-L2)2PPh3]Cl. Both types of complexes are formed with X2PN(CHMe2)PYY? {X = Ph, YY? = O2C6H4 (L3)}. The reaction of 1 with (R),(S)-(H12C20O2)PN(CHMe2)PPh2 (L7) yields both cationic and neutral complexes, [CpRu{eta2-(L7)}PPh3]Cl and [CpRu{eta1-(L7)}2PPh3]Cl and [CpRu{eta2-(L7)}-Cl]. The reactions of optically pure diphosphazane, Ph2PN(*CHMePh)PPhY (Y = Ph (L8); Y = N2C3HMe2-3,5 (L9)) with 1 give the neutral and cationic ruthenium complexes, [CpRu{eta2-(Ph2PN(R)PPhY)}Cl] and [CpRu{eta2-(ph2PN(R)-PPhY)}PPh3]Cl. “Chiral-at-metal” ruthenium complexes of diphosphazanes have been synthesized with high diastereo-selectivity. The absolute configuration of a novel ruthenium complex, (SCSPRRu)-[(eta5-C5H 5)Ru* {eta2-(Ph2PN(*CHMePh)-P*Ph(N2C 3HMe2-3,5))}Cl] possessing three chiral centers, is established by X-ray crystallography. The reactions of [CpRu{eta2-(L8)}Cl] with mono or diphosphanes in the presence of NH4PF6 yield the cationic complexes, [CpRu{eta2-(L8)}{eta1-(P)}]PF6 {P = P(OMe)3, PPh3, Ph2P(CH2)nPPh2 (n = 1 or 2)}.

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