Category: ruthenium-catalysts

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. 37366-09-9, C12H12Cl4Ru2. A document type is Article, introducing its new discovery., Safety of Dichloro(benzene)ruthenium(II) dimer

STRUCTURAL CHARACTERISATION OF HYDROXO-BRIDGED ARENE-RUTHENIUM AND -OSMIUM COMPLEXES: FURTHER REACTIONS OF HYDROXO-BRIDGED COMPLEXES

Reaction of <2> with an excess of either aqueous NaOH or Na2CO3 followed by addition of Na gave two products, previously formulated as BPh4 (II) and <(eta-C6H6)M(OH)3M(eta-C6H6)>BPh4*Me2CO (M = Ru (III), Os (IV)).X-ray structural analyses now reveal that the latter should be reformulated as the novel (BPh4)2*2Me2CO tetramers containing a tetrahedrally coordinated O2- ion.In contrast, with substituted arenes the binuclear triple hydroxo-bridged cations of type III are formed asevidenced by the X-ray crystal structure determination of Cl*3H2O (V).Reactions of these various hydroxo-bridged complexes with HX (X = Cl, Br, I) gives either + and/or <2> whereas with CF3CO2H in the presence of arene’, the dications 2+ are formed.

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

Synthetic Route 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)

Novel mononuclear eta5-pentamethylcyclopentadienyl complexes of platinum group metals bearing pyrazolylpyridazine ligands: Syntheses and spectral studies

Condensation of 3,6-dichloropyridazine with 3,5-dimethylpyrazole in 1:1 ratio yielded one side substituted pyrazolylpyridazine ligand 3-chloro-6-(3,5-dimethylpyrazolyl)pyridazine (L) while condensation of 3,6-dichloropyridazine with substituted pyrazoles in 1:2 ratio yielded both side substituted pyrazolylpyridazine ligands such as 3,6-bis(pyrazolyl)pyridazine (L1), 3,6-bis(3-methylpyrazolyl)pyridazine (L2) and 3,6-bis(3,5- dimethylpyrazolyl)pyridazine (L3). A new series of cationic mononuclear complexes of the type [(eta5-Cp)Ma(L)(PPh3)]PF6, [(eta5-Cp)Mb(L)Cl]PF6, [(eta5-Cp)Ru(L?)(PPh3)]PF6and [(eta5-Cp)Mb(L?)Cl]+(where Ma= Ru, Os; Mb= Rh, Ir and L? = L1, L2, L3) bearing pyrazolylpyridazine and eta5-cyclopentadienyl ligands are reported. The complexes have been completely characterized by spectral studies. The molecular structures of representative complexes have been determined by single crystal X-ray crystallography.

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

In an article, published in an article, once mentioned the application of 37366-09-9, Name is Dichloro(benzene)ruthenium(II) dimer,molecular formula is C12H12Cl4Ru2, is a conventional compound. this article was the specific content is as follows.SDS of cas: 37366-09-9

Ruthenium(II) complexes bearing a naphthalimide fragment: A modular dye platform for the dye-sensitized solar cell

Cycloruthenated complexes of the type [RuII(N^N) 2(C^N)]+ (N^N = substituted 2,2?-bipyridine; C^N = substituted 3-(2?-pyridyl)-1,8-naphthalimide ligand) are shown to generate high power conversion efficiencies (PCEs) in the dye-sensitized solar cell (DSSC). It is shown that substitution of the pyridine ring of the C^N ligand with conjugated groups can enhance molar absorption extinction coefficients, while the electron density imparted on the metal center is alleviated by the 1,8-naphthalimide fragment. This latter feature maintains a Ru(III)/Ru(II) redox couple more positive than 0.8 V versus NHE, thereby accommodating regeneration of the oxidized dye by an iodide-based redox mediator. This dye platform can consequently be modulated at various sites to enhance light absorption and suppress recombination between the redox mediator and the TiO2 surface without compromising dye regeneration, thereby maintaining device PCEs as high as 7%. We also introduce a new phosphine-based coadsorbent, bis(2-ethylhexyl)phosphinic acid (BEPA), which is significantly easier to synthesize than the widely used bis(3,3-dimethylbutyl)phosphinic acid (DINHOP) while also facilitating high dye loading.

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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.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, Application In Synthesis of (1,3-Bis(2,4,6-trimethylphenyl)-2-imidazolidinylidene)dichloro(phenylmethylene)(tricyclohexylphosphine)ruthenium

Synthesis and stereochemistry of decarestrictines H and J

The first synthesis of (7S,9R)-decarestrictine H and (7R,9R)-decarestrictine H as well as the improved synthesis of decarestrictine J were achieved. The overall yields of (7S,9R)-decarestrictines H and J were 20.9% each in nine to ten steps from (R)-Roche ester using a unified synthetic route via esterification with 3,3-ethylenedioxyhex-5-enoic acid and ring-closing metathesis, which were the key steps. The relative stereochemistry of decarestrictine H was determined to be 7,9-syn by comparing the spectral data of the natural product and synthetic epimers of decarestrictines H.

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.Application In Synthesis of (1,3-Bis(2,4,6-trimethylphenyl)-2-imidazolidinylidene)dichloro(phenylmethylene)(tricyclohexylphosphine)ruthenium, you can also check out more blogs about246047-72-3

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

Related Products of 246047-72-3, An article , which mentions 246047-72-3, molecular formula is C46H65Cl2N2PRu. The compound – (1,3-Bis(2,4,6-trimethylphenyl)-2-imidazolidinylidene)dichloro(phenylmethylene)(tricyclohexylphosphine)ruthenium played an important role in people’s production and life.

A concise formal stereoselective total synthesis of (-)-swainsonine

A short formal stereoselective synthesis of (-)-swainsonine (1) is described. Our synthesis started with the versatile building block (R)-3-benzyloxyglutarimide 5. Through controlled regioselective reduction, Ley’s-sulfone chemistry (N-alpha-sulfonylation and ZnCl2-catalyzed N-alpha-amidovinylation), an RCM reaction, and an amide reduction, the synthesis of unsaturated indolizidine (8R,8aS)-3 has been achieved in five steps. The indolizidine (8R,8aS)-3 is an advanced intermediate toward the synthesis of (-)-swainsonine (1).

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

Electric Literature of 246047-72-3, Chemistry can be defined as the study of matter and the changes it undergoes. You¡¯ll sometimes hear it called the central science because it is the connection between physics and all the other sciences, starting with biology.246047-72-3, Name is (1,3-Bis(2,4,6-trimethylphenyl)-2-imidazolidinylidene)dichloro(phenylmethylene)(tricyclohexylphosphine)ruthenium, molecular formula is C46H65Cl2N2PRu. In a patent, introducing its new discovery.

Efficient total syntheses of (-)-colombiasin A and (-)-elisapterosin B: Application of the Cr-catalyzed asymmetric quinone Diels-Alder reaction

(Chemical Equation Presented) A made-to-order asymmetric catalytic reaction was applied in the key quinone Diels-Alder step of the total syntheses of the title compounds (see scheme for the synthesis of colombiasin A). The reaction was highly regio- and diastereoselective.

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

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. 92361-49-4, C46H45ClP2Ru. A document type is Article, introducing its new discovery., SDS of cas: 92361-49-4

Ethinylkomplexe des rutheniums mit terminalen hauptgruppenelement-substituenten: Systematischer aufbau metallgebundener phosphoniumacetylid-liganden R?R2P(+)-C?C|(-)

Treatment of Cp*RuL2Cl (Cp* = C5Me5; L = PPh3, PMe3) with Me3SiC?CH in the presence of NH4[PF6] in CH2Cl2 yielded the expected vinylidene compounds [Cp*RuL2=C=CH2][PF6] with L = PPh3 (1) and PMe3 (1a), which were deprotonated by KOBut in THF to give the corresponding ethynyl complexes Cp*Ru(PPh3)2C?CH (2) and Cp*Ru(PMe3)2C?CH (2a). Metalation of 2 using n-BuLi or t-BuLi in THF-hexane, followed by reaction of the lithio intermediate Cp*Ru(PPh3)2C?CLi with ClER3 (E = Si, Ge, Sn) or C1PR2, resulted in the formation of substituted derivatives, Cp*Ru(PPh3)2C?CER3 [ER3 = SiMe3 (3), GeMe3 (4), SnBun3 (5)] and Cp*Ru(PPh3)2C?CPR2 [PR2 = PPh2 (6), PBut2 (7)] respectively. Quaternization of 6 and 7 by alkyl iodides in toluene smoothly produced phosphonioethynyl complexes, [Cp*Ru(PPh3)2C?CPR2R?]I [PR2R? = PPh2Me (8), PBut2Me (9), PPh2Prn (10), PBut2Prn (11)], the cations of which may be regarded as donor/acceptor-stabilized derivatives of dicarbon, C2.

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

Reference of 10049-08-8, An article , which mentions 10049-08-8, molecular formula is Cl3Ru. The compound – Ruthenium(III) chloride played an important role in people’s production and life.

Probing the formation mechanism and chemical states of carbon-supported Pt-Ru nanoparticles by in situ X-ray absorption spectroscopy

The understanding of the formation mechanism of nanoparticles is essential for the successful particle design and scaling-up process. This paper reports findings of an X-ray absorption spectroscopy (XAS) investigation, comprised of X-ray absorption near-edge structure (XANES) and extended X-ray absorption fine structure (EXAFS) regions, to understand the mechanism of the carbon-supported Pt-Ru nanoparticles (NPs) formation process. We have utilized Watanabe’s colloidal reduction method to synthesize Pt-Ru/C NPs. We slightly modified the Watanabe method by introducing a mixing and heat treatment step of Pt and Ru oxidic species at 100C for 8 h with a view to enhance the mixing efficiency of the precursor species, thereby one can achieve improved homogeneity and atomic distribution in the resultant Pt-Ru/C NPs. During the reduction process, in situ XAS measurements allowed us to follow the evolution of Pt and Ru environments and their chemical states. The Pt LIII-edge XAS indicates that when H2PtCl6 is treated with NaHSO 3, the platinum compound is found to be reduced to a Pt(II) form corresponding to the anionic complex [Pt(SO3)4] 6-. Further oxidation of this anionic complex with hydrogen peroxide forms dispersed [Pt(OH)6]2- species. Analysis of Ru K-edge XAS results confirms the reduction of RuIIICl3 to [RuIII(OH)4]2- species upon addition of NaHSO3. Addition of hydrogen peroxide to [RuII(OH) 4]2- causes dehydrogenation and forms RuOx species. Mixing of [Pt(OH)6]2- and RuOx species and heat treatment at 100C for 8 h produced a colloidal sol containing both Pt and Ru metallic as well as ionic contributions. The reduction of this colloidal mixture at 300C in hydrogen atmosphere for 2 h forms Pt-Ru nanoparticles as indicated by the presence of Pt and Ru atoms in the first coordination shell. Determination of the alloying extent or atomic distribution of Pt and Ru atoms in the resulting Pt-Ru/C NPs reveals that the alloying extent of Ru (JRu) is greater than that of the alloying extent of Pt (JPt). The XAS results support the Pt-rich core and Ru-rich shell structure with a considerable amount of segregation in the Pt region and with less segregation in the Ru region for the obtained Pt-Ru/C NPs.

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

In an article, published in an article, once mentioned the application of 32993-05-8, Name is Chlorocyclopentadienylbis(triphenylphosphine)ruthenium(II),molecular formula is C41H35ClP2Ru, is a conventional compound. this article was the specific content is as follows.HPLC of Formula: C41H35ClP2Ru

Mono and dinuclear complexes of half-sandwich platinum group metals (Ru, Rh and Ir) bearing a flexible pyridyl-thiazole multidentate donor ligand

The mononuclear cationic complexes [(eta6-C6H6)RuCl(L)]+ (1), [(eta6-p-iPrC6H4Me)RuCl(L)]+ (2), [(eta5-C5H5)Ru(PPh3)(L)]+ (3), [(eta5-C5Me5)Ru(PPh3)(L)]+ (4), [(eta5-C5Me5)RhCl(L)]+ (5), [(eta5-C5Me5)IrCl(L)]+ (6) as well as the dinuclear dicationic complexes [{(eta6-C6H6)RuCl}2(L)]2+ (7), [{(eta6-p-iPrC6H4Me)RuCl}2(L)]2+ (8), [{(eta5-C5H5)Ru(PPh3)}2(L)]2+ (9), [{(eta5-C5Me5)Ru(PPh3)}2(L)]2+ (10), [{(eta5-C5Me5)RhCl}2(L)]2+ (11) and [{(eta5-C5Me5)IrCl}2(L)]2+ (12) have been synthesized from 4,4?-bis(2-pyridyl-4-thiazole) (L) and the corresponding complexes [(eta6-C6H6)Ru(mu-Cl)Cl]2, [(eta6-p-iPrC6H4Me)Ru(mu-Cl)Cl]2, [(eta5-C5H5)Ru(PPh3)2Cl)], [(eta5-C5Me5)Ru(PPh3)2Cl], [(eta5-C5Me5)Rh(mu-Cl)Cl]2 and [(eta5-C5Me5)Ir(mu-Cl)Cl]2, respectively. All complexes were isolated as hexafluorophosphate salts and characterized by IR, NMR, mass spectrometry and UV-vis spectroscopy. The X-ray crystal structure analyses of [3]PF6, [5]PF6, [8](PF6)2 and [12](PF6)2 reveal a typical piano-stool geometry around the metal centers with a five-membered metallo-cycle in which 4,4?-bis(2-pyridyl-4-thiazole) acts as a N,N?-chelating ligand.

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

Reference of 10049-08-8, An article , which mentions 10049-08-8, molecular formula is Cl3Ru. The compound – Ruthenium(III) chloride played an important role in people’s production and life.

Syntheses and redox properties of bis(hydroxoruthenium) complexes with quinone and bipyridine ligands. Water-oxidation catalysis

The novel bridging ligand 1,8-bis(2,2?;6?,2?-terpyridyl)anthracene (btpyan) is synthesized by three reactions from 1,8-diformylanthracene to connect two [Ru(L)(OH)]+ units (L = 3,6-di-tert-buty1-1,2-benzoquinone (3,6-tBu2-qui) and 2.2?-bipyridine (bpy)). An addition of tBuOK (2.0 equiv) to a methanolic solution of [RuII2(OH)2(3.6-tBu2 qui)2(btpyan)](SbF6)2 ([1](SbF6)2) results in the generation of [RuII2(O)2(3,6-t Bu2sq)2(btpyan)]0 (3,6-tBu2sq = 3,6-di-tert-butyl-1,2-semiquinone) due to the reduction of quinone coupled with the dissociation of the hydroxo protons. The resultant complex [RuII2(O)2(3,6-t Bu2sq)2(btpyan)]0 undergoes ligand-localized oxidation at E1/2= +0.40 V (vs Ag/AgCl) to give [RuII2(O)2(3,6-t Bu2qui)2(btpyan)]2+ in MeOH solution, Furthermore, metal-localized oxidation of [RuII2(O)2(3,6-t Bu2qui)2(btpyan)]2+ at Ep= +1.2 V in CF3CH2OH/ether or water gives [RuIII2(O)2(3,6-t Bu2qui)2(btpyan)]4+, which catalyzes water oxidation. Controlled-potential electrolysis of [1](SbF6)2 at +1.70 V in the presence of H2O in CF3CH2OH evolves dioxygen with a current efficiency of 91% (21 turnovers). The turnover number of O2 evolution increases to 33 500 when the electrolysis is conducted in water (pH 4.0) by using a [1](SbF6)2-modified ITO electrode. On the other hand, the analogous complex [RuII2(OH)2(bpy)2(btpyan)]- (SbF6)2 ([2](SBF6)2) shows neither dissociation of the hydroxo protons, even in the presence of a large excess of tBuOK, nor activity for the oxidation of H2O under similar conditions.

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