Category: ruthenium-catalysts

Reference of 37366-09-9. 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

Organo-ruthenium supported heteropolytungstates: synthesis, structure, electrochemistry, and oxidation catalysis

The reaction of [Ru(arene)Cl2]2 (arene = benzene, p-cymene) with [X2W22O74(OH)2] 12- (X = SbIII, BiIII) In buffer medium resulted In four organo-ruthenium supported heteropolytungstates, [Sb 2W20O70(RuC6H6) 2]10 (1), [Bi2W20O 70(RuC6H6)2]10- (2), [Sb2W20O7o(RuC10H14) 2]10- (3), and [Bi2W20O 70(RuC10H14)2]10- (4), which have been characterized in solution by multinuclear (183W, 13C, 1H) NMR, UV-vis spectroscopy, electrochemistry, and in the solid state by single-crystal X-ray diffraction, IR spectroscopy, thermogravimetric analysis, and elemental analysis. Polyanions 1, 2, and 4 crystallize in the triclinic system, space group P1 with the following unit cell parameters: K5Na5[Sb2W20O 7o(RuC6H6)2]¡¤22H 2O (KNa-1), a= 12.1625(2)A, b = 13.1677(2) A, C= 16.0141(3)A alpha = 78.9201 (7), beta = 74.4442(8), gamma = 78.9019(8), and Z= 1 ; Cs2Na8[Bi2W 20O7o(RuC6H6)2] ¡¤ 30H2O (CsNa-2), a = 11.6353(7) A b = 13.3638(7) A, C= 16.7067(8) A, a = 79.568(2), beta = 71.103(2), gamma = 80.331(2), and Z= 1; Na10[Bi2W20O 70(RuC10H14)2]-35H20 (Na-4), a = 15.7376(12) A b = 15.9806(13) A, c = 24.2909(19) A, alpha = 92.109(4), beta = 101.354(4), gamma = 97.365(3), and Z= 2. Polyanions 1-4 consist of two (L)Ru2+ (L = benzene or p-cymene) units linked to a [X2W20O70]14 (X=Sb III BiIII fragment via Ru-O(W) bonds resulting in an assembly with idealized C2h symmetry. Polyanions 1-4 are stable in solution as indicated by the expected 183W, 13C, and 1H NMR spectra. The electrochemistry of 1-4 is described by considering the reduction and the oxidation processes. The nature of the arene In Ru(arene) has practically no influence on the formal potentials of the W-centers, which are more sensitive to the Sb or Bi hetera atoms. The results suggest that the respective Sb- and Bi derivatives have very different pK a values, with the reduced form of 1 being the most basic, thus permitting the observation of two well-developed voltammetric waves at pH 6. In contrast, the identity of the arene influences the oxidation processes, thus permitting to distinguish them. A strong electrocatalytic water oxidation peak is observed that is more positive than the one corresponding to the Ru(arene) oxidation process. Also a stepwise oxidation of the Ru(benzene) group could be observed at pH 3. The catalytic efficiency, on the other hand, of 1-4 toward the oxidation of n-hexadecane and p-xylene illustrated the effect of ruthenium substitution on the polyanion catalytic performance.

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

15746-57-3, Name is Cis-Dichlorobis(2,2′-bipyridine)ruthenium(II), molecular formula is C20H16Cl2N4Ru, belongs to ruthenium-catalysts compound, is a common compound. In a patnet, once mentioned the new application about 15746-57-3, Recommanded Product: Cis-Dichlorobis(2,2′-bipyridine)ruthenium(II)

The functionalized ruthenium(II)polypyridine complexes for the highly selective sensing of mercury ions

A series of new ruthenium(II)polypyridine complexes appending with thioether groups were designed, synthesized and characterized. The sensing ability of the complexes toward mercury ions were studied by electronic absorption and emission spectra, and the reaction of the complexes with mercury ions were also confirmed by ESI mass spectroscopy and 1HNMR spectroscopy. The thioether groups would react with mercury ion fast to form aldehyde group leading to the significant change in the spectra. The color of the complex changed from yellow to orange after addition of mercury ions, and the color of the emission changed from red orange to dark red with a large red shift (~80 nm). Importantly, these kinds of ruthenium(II)complexes show a unique recognition of mercury ions over other metal ions. The complexes with more thioether groups also showed a better sensitivity toward mercury ions, this is good strategy for the further design of the new phosphorescent probes for sensing of mercury ions.

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

Application of 114615-82-6, 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. 114615-82-6, C12H28NO4Ru. A document type is Patent, introducing its new discovery.

5-lipoxygenase inhibitors

Novel compounds having the ability to inhibit 5-lipoxygenase enzyme and having the following formula I: STR1 and the pharmaceutically acceptable salts thereof, wherein Ar1 is a heterocyclic moiety which is selected from imidazolyl, pyrrolyl, pyrazolyl, 1,2,3-triazolyl, 1,2,4-triazolyl, indolyl, indazolyl and benzimidazolyl, which is bonded to X1 through a ring nitrogen atom, and which may be optionally substituted with one or two substituents selected from halo, hydroxy, cyano, amino, and C1-4 alkyl; X1 is a direct bond or C1-4 alkylene; Ar2 is phenylene optionally substituted with halo, hydroxy, cyano, and amino X2 is –A–X– or –X–A– wherein A is a direct bond or C1-4 alkylene and X is oxy, thio, sulfinyl or sulfonyl; Ar3 is phenylene, pyridylene, thienylene, furylene, oxazolylene or thiazolylene optionally substituted with one or two substituents selected from halo, hydroxy, cyano, amino and C1-4 alkyl; R1 and R2 are each C1-4 alkyl, or together they form a group of formula –D1 –Z–D2 — which together with the carbon atom to which it is attached defines a ring having 3 to 8 atoms, wherein D1 and D2 are C1-4 alkylene and Z is a direct bond or oxy, thio, sulfinyl, sulfonyl, or vinylene, and D1 and D2 may be substituted by C1-3 alkyl; and Y is CONR3 R4, CN, C(R3)=N–OR4, COOR3, COR3 or CSNR3 R4, wherein R3 and R4 are each H or C1-4 alkyl. These compounds are useful in the treatment or alleviation of inflammatory diseases, allergy and cardiovascular diseases in mammals and as the active ingredient in pharmaceutical compositions for treating such conditions.

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

Related Products of 37366-09-9, 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.

Trifluoromethanesulfonate (triflate) as a moderately coordinating anion: Studies from chemistry of the cationic coordinatively unsaturated mono- and diruthenium amidinates

Triflate complexes of mono- and diruthenium amidinates, (eta6-C6R6)Ru(kappa1-OTf){eta2-R?N{double bond, long}C(R??)NR?} (1: R = Me; 2: R = H) and (eta5-C5Me5)Ru(mu-eta2-iPrN{double bond, long}C(Me)NiPr)Ru(kappa1-OTf)(eta5-C5R5) (3: R = Me; 4: R = H), are synthesized, and coordination behavior of the triflate anion to the coordinatively unsaturated ruthenium species is investigated by crystallography and variable temperature (VT) NMR spectroscopy (19F, 1H). The monoruthenium amidinate complexes have three-legged piano-stool structures in single crystals, which include a kappa1-OTf ligand with the Ru-O bond of 2.15-2.20 A?. In contrast, reversible dissociation of OTf is observed in variable temperature 1H NMR spectroscopy in liquid states; the activation energy for the dissociation and recombination of the OTf ligand is varied with the substituents on the arene and amidinate ligand in the corresponding ruthenium cation and the solvent used. A typical example of moderately coordinating ability of the OTf ligand is seen in 19F NMR spectra of (eta6-C6Me6)Ru(kappa1-OTf){eta2-iPrN{double bond, long}C(Me)NiPr} (1a) and (eta6-C6H6)Ru(kappa1-OTf){eta2-iPrN{double bond, long}C(Me)NiPr} (2a) in CD2Cl2 at the temperature range from -90 to 20 C, in which the OTf anion is dissociated in 1a, whereas 2a has a relatively robust Ru-OTf bond. Combination of crystallography and VT NMR contributes to understanding the difference in coordination behavior of the OTf ligand between two diruthenium amidinates, (eta5-C5Me5)Ru(mu-eta2-iPrN{double bond, long}C(Me)NiPr)Ru(kappa1-OTf)(eta5-C5Me5) (3) and (eta5-C5Me5)Ru(mu-eta2-iPrN{double bond, long}C(Me)NiPr)Ru(kappa1-OTf)(eta5-C5H5) (4); the results suggest that the electron-donating and sterically demanding eta5-C5Me5 helps for dissociation of the triflate ligand. Moderate coordinating ability of the triflate anion sometimes provides characteristic reactions of mono- and diruthenium amidinates which differ from the corresponding neutral halogeno-compounds or cationic coordinatively unsaturated homologues bearing fluorinated tetraarylborates; a typical example is given by inhibition of coordination of ethylene to the [(eta6-C6H6)Ru{eta2-tBuN{double bond, long}C(Ph)NtBu}]+ species by the OTf ligand.

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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 92361-49-4, Name is Chloro(pentamethylcyclopentadienyl)bis(triphenylphosphine)ruthenium(II),molecular formula is C46H45ClP2Ru, is a conventional compound. this article was the specific content is as follows.Recommanded Product: 92361-49-4

Synthesis, characterization and electrochemistry of cyclopentadienyl phosphine nitrosyl cyanide complexes of ruthenium(II) and osmium(II). Preparation of the dicyano ruthenium(II) complex, <(eta5-C5H5)Ru(PPh3)(CN)2>Na

A series of novel chiral metal centre complexes of the general form, <"cp"M(PPh3)(NO)(CN)>PF6 with “cp” = eta5-C5H5, M = Ru (1); “cp” = eta5-C5H4-Me, M = Ru (2); “cp” = eta5-C5Me5, M = Ru (3) and “cp” = eta5-C5H5, M = Os (4), has been synthesized in 85percent yield from the corresponding bis-phosphine complexes, <"cp"M(PPh3)2CN>, and characterized by NMR (1H; 31P; 13C) and FTIR spectroscopies.Cyclic voltammetry of 1-4 indicates quasi-reversible MI/II redox couples at potentials (vs.KCl(aq) SCE) of E1/2 -0.125, -0.155, -0.30 and -0.315 V, respectively.Near quantitative syntheses of the precursor bis-phosphine cyanide complexes, from the bis-phosphine halides, have been achieved by using methanolic sodium cyanide.The complex <(eta5-C5H5)Ru(PPh3)(CN)2>Na (6) has been synthesized by treating 1 with sodium azide in acetonitrile followed by methanolic sodium cyanide.

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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. 172222-30-9, C43H72Cl2P2Ru. A document type is Patent, introducing its new discovery., Computed Properties of C43H72Cl2P2Ru

Novel organometallic compound having high metathesis activity and method for preparation thereof, metathesis reaction catalyst comprising the compound, method of polymerization using the catalyst, and polymer produced by the method of polymerization

The present invention provides an organometallic compound represented by the general formula (1) or (2), process for producing the same, metathesis reaction catalyst containing the same, polymerization process using the same catalyst and polymer produced by the same polymerization process: 1

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

Reference of 246047-72-3. Let¡¯s face it, organic chemistry can seem difficult to learn. Especially from a beginner¡¯s point of view. Like 246047-72-3, Name is (1,3-Bis(2,4,6-trimethylphenyl)-2-imidazolidinylidene)dichloro(phenylmethylene)(tricyclohexylphosphine)ruthenium. In a document type is Article, introducing its new discovery.

ROM-RCM of azabicycloheptene derivatives-Study of products distribution by the substituent on alkyne

ROM-RCM (ring-opening metathesis and ring-closing metathesis) of azabicyclo[2.2.1]heptene-ynes using the second-generation Grubbs catalyst was investigated. When an azabicycloheptene derivative was exposed to a catalytic amount of a ruthenium carbene complex, pyrrolizidine and indolizidine derivatives were obtained in good yields. The distribution of these products depends on the substituents on the alkyne.

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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 32993-05-8, Name is Chlorocyclopentadienylbis(triphenylphosphine)ruthenium(II), Application In Synthesis of Chlorocyclopentadienylbis(triphenylphosphine)ruthenium(II).

A phosphomide based PNP ligand, 2,6-{Ph2PC(O)}2(C5H3N), showing PP, PNP and PNO coordination modes

A new class of PNP pincer ligands, pyridine-2,6-diylbis(diphenylphosphino)methanone, 2,6-{Ph2PC(O)}2(C5H3N) (1) (hereafter referred to as “bis(phosphomide)”), was prepared by the reaction of picolinoyldichloride with diphenylphosphine in the presence of triethylamine. The bis(phosphomide) 1 shows symmetrical PNP, unsymmetrical PNO and simple bidentate PP coordination modes when treated with various transition metal precursors. The reaction between 1 and [Ru(p-cymene)Cl2]2 in a 1 : 1 molar ratio yielded a binuclear complex [Ru2Cl4(NCCH3)(p-cymene){2,6-{Ph2PC(O)}2(C5H3N)}] (2) containing an unsymmetrical PNO pincer cage around one of the ruthenium centers, whereas the second ruthenium is bonded to the other phosphorus atom along with cymene and two chloride atoms. Symmetrical pincer complexes [RuCl(NCCH3)2{2,6-{Ph2PC(O)}2(C5H3N)}](ClO4) (3), [Ru(eta5-C5H5){2,6-{Ph2PC(O)}2(C5H3N)}](OTf) (4) and [RhCl{2,6-{Ph2PC(O)}2(C5H3N)}] (5) were obtained in the respective reactions of 1 with [RuCl(NCCH3)2(p-cymene)](ClO4), [Ru(eta5-C5H5)Cl(PPh3)2] and [Rh(COD)Cl]2. Group 10 metal complexes [NiCl{2,6-{Ph2PC(O)}2(C5H3N)}](BF4) (6), [PdCl{2,6-{Ph2PC(O)}2(C5H3N)}]ClO4 (7) and [PtCl{2,6-{Ph2PC(O)}2(C5H3N)}]ClO4 (8) were obtained by transmetallation reactions of in situ generated AgI salts of 1 with Ni(DME)Cl2 or M(COD)Cl2 (M = Ni, Pd and Pt). The reactions between 1 and CuX or [Cu(NCCH3)4](BF4) produced mononuclear complexes of the type [CuX{2,6-{Ph2PC(O)}2(C5H3N)}] (9, X = Cl; 10, X = Br; 11, X = I), [Cu(NCCH3){Ph2C(O)}2(C5H3N)}](BF4) (12) and [Cu{Ph2C(O)}2(C5H3N)}2](BF4) (13). Similarly, the silver complexes [AgX{2,6-{Ph2PC(O)}2(C5H3N)}] (14, X = ClO4; 15, X = Br) were obtained by the treatment of 1 with AgClO4 or AgBr in 1 : 1 molar ratios. Treatment of 1 with AuCl(SMe2) in 1 : 1 and 1 : 2 molar ratios produced mono- and binuclear complexes, [AuCl{2,6-{Ph2PC(O)}2(C5H3N)}] (16) and [Au2Cl2{2,6-{Ph2PC(O)}2(C5H3N)}] (17), in good yield. The structures of ligand 1 and complexes 2, 5 and 17 were confirmed using single-crystal X-ray diffraction studies. DFT calculations were carried out to gain more insights into the structure and bonding features as well as feasibility of some key chemical transformations.

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 Chlorocyclopentadienylbis(triphenylphosphine)ruthenium(II). 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

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. 15746-57-3, Name is Cis-Dichlorobis(2,2′-bipyridine)ruthenium(II), molecular formula is C20H16Cl2N4Ru. In a Patent£¬once mentioned of 15746-57-3, name: Cis-Dichlorobis(2,2′-bipyridine)ruthenium(II)

Organosilane compound and organosilica obtained therefrom

Provided is an organosilane compound expressed by any one of the following general formulae (1) to (7): (wherein: Ar represents a phenylene group or the like; R1 represents a hydrogen atom or the like; R2 to R8 each represent a methyl group or the like; n represents an integer in a range from 0 to 2; m represents an integer of 1 or 2; L represents a single bond or the like; X represents a hydrogen atom or the like; and Y represents a hydrogen atom or the like).

Sometimes chemists are able to propose two or more mechanisms that are consistent with the available data.name: Cis-Dichlorobis(2,2′-bipyridine)ruthenium(II), If a proposed mechanism predicts the wrong experimental rate law, however, the mechanism must be incorrect.Welcome to check out more blogs about 15746-57-3, in my other articles.

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

Electric Literature of 246047-72-3. Let¡¯s face it, organic chemistry can seem difficult to learn. Especially from a beginner¡¯s point of view. Like 246047-72-3, Name is (1,3-Bis(2,4,6-trimethylphenyl)-2-imidazolidinylidene)dichloro(phenylmethylene)(tricyclohexylphosphine)ruthenium. In a document type is Article, introducing its new discovery.

Iriomoteolides: Novel chemical tools to study actin dynamics

Despite its promising biological profile, the cellular targets of iriomoteolide-3a, a novel 15-membered macrolide isolated from Amphidinium sp., have remained unknown. A small library of non-natural iriomoteolide-3a analogues is presented here as a result of a novel, highly convergent, catalysis-based scaffold-diversification campaign, which revealed the suitable sites for chemical editing in the original core. We provide compelling experimental evidence for actin as one of iriomoteolides’ primary cellular targets, establishing the ability of these secondary metabolites to inhibit cell migration, induce severe morphological changes in cells and cause a reversible cytoplasmic retraction and reduction of F-actin fibers in a time and dose dependent manner. These results are interpreted in light of the ability of iriomoteolides to stabilize F-actin filaments. Molecular dynamics simulations provide evidence for iriomoteolide-3a binding to the barbed end of G-actin. These results showcase iriomoteolides as novel and easily tunable chemical probes for the in vitro study of actin dynamics in the context of cell motility processes including cell invasion and division.

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