Category: ruthenium-catalysts

The reaction rate of a catalyzed reaction is faster than the reaction rate of the uncatalyzed reaction at the same temperature.301224-40-8, Name is (1,3-Dimesitylimidazolidin-2-ylidene)(2-isopropoxybenzylidene)ruthenium(VI) chloride, molecular formula is C31H38Cl2N2ORu. In a Article£¬once mentioned of 301224-40-8, SDS of cas: 301224-40-8

Synthesis of stable ruthenium olefin metathesis catalysts with mixed anionic ligands

A series of ruthenium carboxylate complexes that contain two different anionic ligands was prepared. The complexes that bear iodide ligands exhibit remarkable chemical stability. Such complexes have a diminished tendency to undergo anionic ligand exchange and can be activated byvarious acids to form catalysts, which are active in olefinmetathesis reactions. Ruthenium carboxylate complexes that contain an iodide ligand exhibit remarkable stability. Such complexes can be activated by various acids (HA) to form mixed ligand catalysts 12, which are active in metathesis reactions and possess a diminished tendency for anionic ligand exchange.

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.SDS of cas: 301224-40-8, you can also check out more blogs about301224-40-8

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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. 246047-72-3, Name is (1,3-Bis(2,4,6-trimethylphenyl)-2-imidazolidinylidene)dichloro(phenylmethylene)(tricyclohexylphosphine)ruthenium, molecular formula is C46H65Cl2N2PRu. In a Article£¬once mentioned of 246047-72-3, Formula: C46H65Cl2N2PRu

The effect of substituents at silicon on the cross-metathesis of trisubstituted vinylsilanes with olefins

Efficient cross-metathesis of vinylsilanes, carrying a large spectrum of different substituents at silicon, with various olefins in the presence of the first and second generation Grubbs catalyst and Hoveyda-Grubbs catalyst is described. On the basis of the results of equimolar reactions of vinylsilanes with ruthenium alkylidene complexes and experiments with deuterium-labelled reagents, a general, metallacarbene mechanism for the cross-metathesis of trisubstituted vinylsilanes with olefins has been suggested. Reaction was proved to be a valuable method for synthesis of unsaturated organosilicon derivatives.

Sometimes chemists are able to propose two or more mechanisms that are consistent with the available data.Formula: C46H65Cl2N2PRu, If a proposed mechanism predicts the wrong experimental rate law, however, the mechanism must be incorrect.Welcome to check out more blogs about 246047-72-3, in my other articles.

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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.37366-09-9, Name is Dichloro(benzene)ruthenium(II) dimer, molecular formula is C12H12Cl4Ru2. In a Article£¬once mentioned of 37366-09-9, Formula: C12H12Cl4Ru2

Ruthenium(II)?arene complexes of diimines: Effect of diimine intercalation and hydrophobicity on DNA and protein binding and cytotoxicity

A series of half-sandwich Ru(II)?arene complexes [Ru(eta6-benzene)(diimine)Cl](PF6) (1?4), where diimine is 1,10-phenanthroline (1), 5,6-dimethyl-1,10-phenanthroline (2), dipyrido[3,2-a:2?,3?-c]phenazine (3) or 11,12-dimethyldipyrido[3,2-a:2?,3?-c]phenazine (4), have been isolated and characterized using analytical and spectral methods. Complex 2 possesses a familiar pseudo-octahedral ?piano-stool? structure. The intrinsic DNA binding affinity of the complexes depends upon the diimine ligand: 3 (dppz) > 4 (11,12-dmdppz) > 2 (5,6-dmp) > 1 (phen). The pi-stacking interaction of extended planar ring of coordinated dppz (3) in between the DNA base pairs is more intimate than that of phen (1), and the incorporation of methyl groups on the dppz ring (4) discourages the stacking interaction leading to a lower DNA binding affinity for 4 than 3. Docking studies show that all the complexes bind in the major groove of DNA. Interestingly, 3 shows an ability to convert supercoiled DNA into nicked circular DNA even at 20 muM concentration beyond which complete oxidative DNA degradation is observed. The protein binding affinity of the complexes decreases in the order 4 > 3 > 2 > 1, and the higher protein binding affinity of 4 illustrates the strong involvement of methyl groups on dppz ring in hydrophobic interaction with protein. Also, 4 cleaves protein more efficiently than the other complexes in the presence of H2O2. It is notable that 2, 3 and 4 display cytotoxicity against human cervical cancer cell lines (SiHa) with potency higher than the currently used drug cisplatin. Acridine orange/ethidium bromide staining studies reveal that 3 induces apoptosis in cancer cells much more efficiently than 4.

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.Formula: C12H12Cl4Ru2, you can also check out more blogs about37366-09-9

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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 37366-09-9, Name is Dichloro(benzene)ruthenium(II) dimer, Application In Synthesis of Dichloro(benzene)ruthenium(II) dimer.

Structural characterization and biological evaluation of a clioquinol-ruthenium complex with copper-independent antileukaemic activity

In this study, we present the synthesis, biological characterization, and first crystal structure of an organometallic-clioquinol complex. Combining ruthenium with the established apoptotic agent and 8-hydroxyquinoline derivative, clioquinol, resulted in a complex that induces caspase-dependent cell death in leukaemia cells. This activity is copper independent and is improved compared to the parent compound, clioquinol. The study of the mode of action reveals that this clioquinol-ruthenium complex does not intercalate between DNA base pairs. Additionally, this clioquinol-ruthenium complex shows proteasome-independent inhibition of the NFkappaB signalling pathway, with no effects on cell-cycle distribution. These data suggest a mechanism of action that involves a target profile that is different from that for clioquinol alone. the Partner Organisations 2014.

Balanced chemical reaction does not necessarily reveal either the individual elementary reactions by which a reaction occurs or its rate law.Application In Synthesis of Dichloro(benzene)ruthenium(II) dimer. In my other articles, you can also check out more blogs about 37366-09-9

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

Synthetic Route of 15746-57-3, 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. 15746-57-3, C20H16Cl2N4Ru. A document type is Article, introducing its new discovery.

Tunneling barrier effects on photoinduced charge transfer through covalent rigid rod-like bridges

Four homologous dyads with a phenothiazine donor, rigid variable-length p-xylene bridges, and a ruthenium(ll) tris(2,2′-bipyridine) acceptor were synthesized. Photoexcitation of these donor-bridge-acceptor molecules in the presence of excess methylviologen generates a highly oxidizing Ru(lll) intermediate, which triggers an intramolecular phenothiazine-to-ruthenium(lll) electron transfer that is mediated by the oligo-p-xylene spacers. The rates for this process were determined using transient absorption spectroscopy, and they are found to decrease exponentially with increasing donor-acceptor distance. This decrease occurs with an attenuation factor beta of 0.77 A-1 and is substantially stronger than for analogous donor-bridge-acceptor molecules where the acceptor is a rhenium(l) tricarbonyl diimine complex (beta = 0.52 A-1). This striking finding is interpreted in terms of a larger barrier to hole tunneling in the ruthenium dyads relative to the rhenium systems.

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

246047-72-3, Name is (1,3-Bis(2,4,6-trimethylphenyl)-2-imidazolidinylidene)dichloro(phenylmethylene)(tricyclohexylphosphine)ruthenium, molecular formula is C46H65Cl2N2PRu, belongs to ruthenium-catalysts compound, is a common compound. In a patnet, once mentioned the new application about 246047-72-3, SDS of cas: 246047-72-3

Cis-selective ring-opening metathesis polymerization with ruthenium catalysts

Cis-selective ring-opening metathesis polymerization of several monocyclic alkenes as well as norbornene and oxanorbornene-type monomers using a C-H activated, ruthenium-based metathesis catalyst is reported. The cis content of the isolated polymers depended heavily on the monomer structure and temperature. A cis content as high as 96% could be obtained by lowering the temperature of the polymerization.

Balanced chemical reaction does not necessarily reveal either the individual elementary reactions by which a reaction occurs or its rate law.SDS of cas: 246047-72-3. In my other articles, you can also check out more blogs about 246047-72-3

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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. 10049-08-8, Name is Ruthenium(III) chloride, molecular formula is Cl3Ru. In a Article£¬once mentioned of 10049-08-8, Application In Synthesis of Ruthenium(III) chloride

Mechanism of Ru(III) catalysis in N-bromoacetamide oxidation of some glycols in perchloric acid media

The kinetics of ruthenium(III) chloride catalysis in the oxidation of diethylene glycol (DG) and methyl diethylene glycol (MDG) by N-bromoacetamide (NBA) in perchloric acid media are reported. The reactions follow identical kinetics, showing zero-order dependence on NBA, but first-order on each of H+, Ru(III) and Cl- ions. The first-order kinetics with respect to glycol at low concentrations shifts to zero-order at higher concentrations. A negative effect of ionic strength is observed, while successive addition of acetamide, D2O and mercuric acetate shows zero effect on the reaction rate.

Balanced chemical reaction does not necessarily reveal either the individual elementary reactions by which a reaction occurs or its rate law.Application In Synthesis of Ruthenium(III) chloride. In my other articles, you can also check out more blogs about 10049-08-8

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

37366-09-9, Name is Dichloro(benzene)ruthenium(II) dimer, molecular formula is C12H12Cl4Ru2, belongs to ruthenium-catalysts compound, is a common compound. In a patnet, once mentioned the new application about 37366-09-9, HPLC of Formula: C12H12Cl4Ru2

Effect of diphosphine ligands on ruthenium catalyzed asymmetric hydrogenation of ketones

A series of diphosphines including those that are configurationally flexible were examined in the Ru(II) catalyzed enantioselective hydrogenation of 1-acetonaphthone in the presence of a chiral diamine. These ligands were found to exert significant effects on both the activity and enantioselectivity of Ru(II)-diamine catalysts, with the ligand with the smallest bite angle yielding the lowest conversion and the one with largest bite angle yielding the lowest enantioselection.

Balanced chemical reaction does not necessarily reveal either the individual elementary reactions by which a reaction occurs or its rate law.HPLC of Formula: C12H12Cl4Ru2. In my other articles, you can also check out more blogs about 37366-09-9

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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)

Ruthenium-Catalyzed Heck-Type Alkenylation of Alkyl Bromides

The complex [CpRuCl(PPh3)2] displays a high catalytic activity for the Heck-type alkenylation of alkyl bromides in the first example using this metal under thermal conditions. The coupling reaction proceeds efficiently with a variety of functionalized tertiary, secondary, and primary alkyl bromides. The presence of Huenig’s base has been revealed to be crucial for this transformation. Preliminary mechanistic studies support the participation of alkyl radicals in the reaction.

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

37366-09-9, Name is Dichloro(benzene)ruthenium(II) dimer, molecular formula is C12H12Cl4Ru2, belongs to ruthenium-catalysts compound, is a common compound. In a patnet, once mentioned the new application about 37366-09-9, Quality Control of: Dichloro(benzene)ruthenium(II) dimer

Synthesis, characterization, anticancer and antimicrobial study of arene ruthenium(II) complexes with 1,2,4-triazole ligands containing an alpha-diimine moiety

The reaction of the ruthenium arene dimers [(eta6-arene)Ru(mu-Cl)Cl]2 (where arene=benzene or p-cymene) with the ligands 4-benzylidene-3,5-di(2?-pyridyl)-4-amino-1,2,4-triazole (L1), 2-methoxybenzylidene-3,5-di(2?-pyridyl)-4-amino-1,2,4-triazole (L2), 4-methylbenzylidene-3,5-di(2?-pyridyl)-4-amino-1,2,4-triazole (L3) and indole-3-carbaldehyde-3,5-di(2?-pyridyl)-4-amino-1,2,4-triazole (L4) in a 1:2 ratio gives the new complexes [(eta6-arene)RuCl(L)]+ [arene=C6H6 (with L=L1(1), L2(3), L4(7), with PF6- as a counter ion, and L4 (6), with Cl- as a counter ion) or p-cymene with L=L1(2), L2(4), L3(5), L4(8) with PF6- as a counter ion]. All complexes were fully characterized using 1H and 13C NMR, elemental analyses, UV/Vis and IR spectroscopy. The single crystal X-ray structures of ligand L2 and complex 1 have been determined. The structure of 1 has the Ru atom coordinated with the arene group and to the N,N?-bidentate ligand and to the Cl atom. The arene group occupies the apex, while the ligand and the Cl atom are at the base of a pseudo-octahedral three-legged piano stool. The cytotoxicity of these mononuclear complexes was established in the human epithelial colorectal adenocarcinoma cell line (Caco-2) and for selectivity in the non-cancerous human embryonic kidney cell line (HEK293), using 5-fluorouracil (5-FU) as the reference anticancer drug. Compounds 1 and 7 were relatively inactive toward the Caco-2 tumor cells (IC50>200), while complexes 2-5 showed moderate anti-proliferative properties (IC50>100-200). Compound 6, however, displayed better anti-proliferative properties with an IC50 value lower than that of the reference drug, 5-FU, and was therefore further investigated for its antimicrobial activity against six Gram-positive and four Gram-negative bacteria.

Balanced chemical reaction does not necessarily reveal either the individual elementary reactions by which a reaction occurs or its rate law.Quality Control of: Dichloro(benzene)ruthenium(II) dimer. In my other articles, you can also check out more blogs about 37366-09-9

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