Sep-21 News Search for Chemical Structures By a Sketch: Ruthenium(III) chloride hydrate

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A ruthenium-containing thin film is produced by the chemical vapor deposition method etc. with the use of an organometallic ruthenium compound represented by the general formula (1), specific example of which is (2,4-dimethyl-pentadienyl)(ethylcyclopentadienyl) ruthenium: 1or an organometallic ruthenium compound represented by the general formula (7), specific example of which is carbonylbis(2-methyl-1,3-pentadiene) ruthenium: 2as the precursor.

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

9/29/21 News Top Picks: new discover of Ruthenium(III) chloride hydrate

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(Chemical Equation Presented) Oxidation without organics: A tetraruthenium polyoxometalate (see picture; Ru blue, O red, Si yellow, W black) catalyzes the rapid oxidation of H2O to O2 in water at ambient temperature, and shows considerable stability under turnover conditions. The complex was characterized by several methods, including X-ray crystallography and cyclic voltammetry.

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

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Hydrogenation of arene derivatives can be successfully performed in water by using ruthenium(0) nanoparticles stabilized by 1: 1 inclusion complexes formed between methylated cyclodextrins and an ammonium salt bearing a long alkyl chain. The Royal Society of Chemistry.

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

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The reaction rate of a catalyzed reaction is faster than the reaction rate of the uncatalyzed reaction at the same temperature.20759-14-2, Name is Ruthenium(III) chloride hydrate, molecular formula is Cl3H2ORu. In a Article,once mentioned of 20759-14-2, Recommanded Product: 20759-14-2

The synthesis of a series of heteroleptic ruthenium(ii)-complexes containing both, 2,2?:6?,2?-terpyridine and 2,6-bis(1H-1,2,3-triazol-4-yl)pyridine, is reported for the first time. The provided complexes feature photophysical and electrochemical properties in between those known for the respective homoleptic complexes. The flexibility with respect to lateral functional groups to be introduced into the complexes underlines the high potential for further functionalization steps.

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

23-Sep News The Absolute Best Science Experiment for Ruthenium(III) chloride hydrate

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The ruthenium substituted polyoxomolybdate of the Keggin structure, Q4PRuIII(H2O)Mo11O39 (Q=n-Bu4N), has been synthesized and characterized. The IR spectra show that this compound is isostructural with the known manganese and cobalt analogs. The cyclic voltammogram showed similar redox potentials and the UV-vis spectra showed similar energies for the d-d transitions compared to the corresponding tungstate, Q4PRuIII(H2O)W11O39. The catalytic activity of the molybdate versus tungstate in reactions with molecular oxygen was, however, significantly different. IR and 31P NMR evidence indicated that treatment of Q4PRuIII(H2O)Mo11O39 with oxygen showed no structural changes whereas, for Q4PRuIII(H2O)W11O39, a clear change was observed. This finding probably explains the lack of catalytic activity for the latter in the co-oxidation of cumene and 1-octene to cumyl alcohol and 1-octene oxide. For the molybdenum compound, this reaction took place by a kinetic balance of ruthenium metal-catalyzed autooxidation of cumene to cumene hydroperoxide and the molybdenum catalyzed oxygen transfer from cumene hydroperoxide to 1-octene to yield the products. High catalyst loading led to reaction inhibition whereas low loading and excess cumene led to increased autooxidation.

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

Sep-21 News A new application about Ruthenium(III) chloride hydrate

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Dimethylamine-borane, (CH3)2NHBH3, has been considered as one of the attractive materials for the efficient storage of hydrogen, which is still one of the key issues in the “Hydrogen Economy”. In a recent communication we have reported the synthesis and characterization of 3-aminopropyltriethoxysilane stabilized ruthenium(0) nanoparticles with the preliminary results for their catalytic performance in the dehydrogenation of dimethylamine-borane at room temperature. Herein, we report a complete work including (i) effect of initial [APTS]/[Ru] molar ratio on both the size and the catalytic activity of ruthenium(0) nanoparticles, (ii) collection of extensive kinetic data under non-MTL conditions depending on the substrate and catalyst concentrations to define the rate law of Ru(0)/APTS-catalyzed dehydrogenation of dimethylamine-borane at room temperature, (iii) determination of activation parameters (Ea, DeltaH# and DeltaS#) for Ru(0)/APTS-catalyzed dehydrogenation of dimethylamine-borane; (iv) demonstration of the catalytic lifetime of Ru(0)/APTS nanoparticles in the dehydrogenation of dimethylamine-borane at room temperature, (v) testing the bottlability and reusability of Ru(0)/APTS nanocatalyst in the room-temperature dehydrogenation of dimethylamine-borane, (vi) quantitative carbon disulfide (CS2) poisoning experiments to find a corrected TTO and TOF values on a per-active-ruthenium-atom basis, (vii) a summary of extensive literature review for the catalysts tested in the catalytic dehydrogenation of dimethylamine-borane as part of the results and discussions.

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

Sep 2021 News Awesome and Easy Science Experiments about Ruthenium(III) chloride hydrate

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One of the most efficient sensitizers presently available for photoelectrochemical solar cell applications is a ruthenium dye based on a terpyridine ligand. The voltammetric oxidation of the N,N,N-bonded thiocyanate isomer of [(H3-tctpy)RuII(NCS)3] (H3-tctpy = 2,2? :6?,2?-terpyridine-4,4?,4?-tricarboxylic acid), which is relevant to the use of the dye in photovoltaic cells, has been studied at platinum, gold, and glassy carbon electrodes. In acetonitrile, the metal-based one-electron oxidation process for the N,N,N-bonded isomer exhibits close to chemically reversible behavior under a wide range of voltammetric conditions, although the presence of surface-based reactions coupled to the charge transfer process are evident. The electrochemical quartz crystal microbalance technique revealed that dye material is adsorbed onto the electrode surface under open circuit conditions and that additional surface-based oxidation processes occur at potentials more positive than the initial metal-based oxidation process. Oxidative voltammetry in acetone is similar to that in acetonitrile. However, studies on mixtures containing S-bonded linkage isomers in this solvent show a shift in reversible potential to less positive values and a decrease in the contribution of the surface-based processes. In dimethylformamide, low temperatures (T = -55C) are necessary to observe a reversible one-electron oxidation process. Data are compared to those reported with the more commonly used [(2,2?-bipyridine-4,4?-dicarboxylic acid)2Ru(NCS)2] sensitizer.

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

10/9/2021 News Extended knowledge of Ruthenium(III) chloride hydrate

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Chloro(epsilon2,epsilon2-norbornadiene)ruthenium(II), 1a, prepared by zinc reduction of n in the presence of norbornadiene and suitable protone sources such as alumina or ammonium chloride in acetonitrile, involves a coordinated alicyclic carbon-hydrogen bond.

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

Sep 2021 News Extended knowledge of Ruthenium(III) chloride hydrate

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trans-[(dppm)2ClRu=C(CH2)3O]+ (2) (dppm=Ph2PCH2PPh2) and trans-[(dppm)2ClRu=C(CH2)2CH(CH) 3O]+ (3) cations were obtained from the reaction of cis-[RuCl2(dppm)2] (1) with 3-butyn-1-ol and 4-pentyn-2-ol, respectively. cis-Dichlororuthenim complex [RuCl2((dppene)(bpy)] (4) (dppene=Ph2PCHCHPPh2, bpy=2,2?-bipyridyl) also reacts with terminal alkynes e.g. 4-pentyn-2-ol and phenylacetylene to give cis-chloro-(oxycarbene)[(dppene)(bpy)ClRu=C(CH2)2CH (CH)3O]+ (5) and cis-chloro-(vinylidene)[(dppene)(bpy)ClRu=C=CHPh]+ (6) cations. cis-[RuCl2(bpy)2] (7) also react with 4-pentyn-2-ol to give dioxacyclic carbene dication cis-[(bpy)2Ru=(C(CH2)2CH(CH)3O) 2]2+ (8). In the reaction of RuCl2(PPh3)3 (9) with 3-butyn-1-ol the dimer [(PPh3)2ClRu=C(CH2)3O] 2 2+ (10) was obtained. The new synthesis method of 1 and cis-[RuCl2(dppm)2]·2MeOH (1a) is also presented. These complexes have been fully characterized by IR, 1H, 13C{H} and 31P{H} NMR) and single crystal X-ray diffraction for 2, 3, 5 and 1a. The catalytic activity of 10 in reactions of ROMP of norbornene was also studied.

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

Sep 2021 News Some scientific research about Ruthenium(III) chloride hydrate

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We herein report the effect of microwave dielectric heating in the Ru-catalysed cycloisomerisation of 1,6-dienes. Substantially improved reaction rates are attained for a series of 1,6-diene substrates, with equivalent or higher isomeric purity than conventional thermal heating. The Royal Society of Chemistry 2006.

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