Tag: M.W:400-500

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, Recommanded Product: Dichloro(benzene)ruthenium(II) dimer

Cycloruthenated complexes of the type [(eta6-C6H6)Ru(C?N)CH3CN] +PF6- (C&N = C6H4-2-CH2NMe2, (R)-(+)-C6H4-2-CH(Me)NMe2,C6H 2-3,4-(OCH3)2-2-CH2-NMe2) are readily obtained by the intramolecular C-H activation of N,N-dimethylbenzylamine derivatives with [(eta6-C6H6)RuCl2l2 in up to 53% isolated yields. Under similar conditions, 8-methylquinoline also led to a cycloruthenated complex, though in lower yield (12%) and after a longer reaction time. Reaction with the optically active (R)-(+)-N,N-dimethyl-1-phenylethylamine led to a 48% diastereomeric excess in the cycloruthenated product. Under the same conditions, and after 14 and 65 h of reaction time, respectively, 2-phenyl- and 2-benzylpyridine are cyclometalated, leading to the formation of complexes in which the benzene ligand has been substituted by three acetonitriles: [(CAN)Ru(CH3CN)+PF6- (C?N = C6H4-2-C5H4N, C6H4-2-(CH2)-C5H4N) were obtained in 40 and 24% isolated yields, respectively.

The reactant in an enzyme-catalyzed reaction is called a substrate. Enzyme inhibitors cause a decrease in the reaction rate of an enzyme-catalyzed reaction.I hope my blog about 37366-09-9 is helpful to your research., Recommanded Product: Dichloro(benzene)ruthenium(II) dimer

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

Reference of 37366-09-9. Let’s face it, organic chemistry can seem difficult to learn. Especially from a beginner’s point of view. Like 37366-09-9, Name is Dichloro(benzene)ruthenium(II) dimer. In a document type is Article, introducing its new discovery.

Coordinatively unsaturated 16-electron ruthenium-selenolate complexes (eta6-arene)Ru(Se-2,4,6-C6H2Me3)2 [arene = p-CH3C6H4(CHMe2) (5b), C6Me6 (5c)] have been prepared by treating [((eta6-arene)RuCl2]2 (1) with sodium salt of 2,4,6-trimethylphenyl-selenolate in methanol. The complexes 5 are compared with the thiolate complexes such as (eta6-arene)Ru(SAr)2 [SAr = 2,6-dimethylbenzenethiolate (2), SAr = 2,4,6-tri(isopropyl)benzenethiolate (3), (SAr)2 = 1,2-benzenedithiolate (4); arene = C6H6 (a), p-CH3C6H4(CHMe2) (b), C6Me6 (c)], which have been recently prepared by us. However, the tellurolate analog has not been obtained in similar manner. These selenolate complexes are dark green, being ascribed to the LMCT band [ppi(Se) ? dpi * (Ru)]. The absorption bands of 5 are red-shifted compared to the thiolate complexes. In contrast to the bulky substituted chalcogenolate ligand system, the reaction of 1 with PhENa followed by the addition of KPF6 resulted in the formation of the cationic binuclear chalcogenolate complexes [(etaeta6-arene)Ru(mu-E-Ph)3Ru(eta6-arene)](PF6) [E = Se (7), E = Te (8); arene = p-CH3C6H4(CHMe2) (b), C6Me6 (c)]. Reactions of the 16-electron thiolate and selenolate complexes with sigma-donor molecules such as DMSO, hydrazine and ammonia along with some electrophiles were investigated. DMSO can coordinate with the thiolate complex 2a to give a DMSO adduct of 9, which was characterized spectroscopically and crystallographically. The strength of complexation of hydrazine and ammonia to the thiolate and selenolate complexes 2, 3, 4c and 5 depends on the effective electron deficiency of the ruthenium supported by eta6-arene ligand and two chalcogenolate ligands. Two new hydrazine complexes (eta6-C6H6)Ru(eta1-NH2NH2)(S-2,6-C6H3Me2)2 (10a) and [(eta6-C6Me6)Ru(S2C6H4)]2( mu-NH2NH2) (16) were crystallographically characterized. The observed two different coordination modes, mononuclear eta1-hydrazine and binuclear mu-hydrazine, were the results of the combined steric effect of the arene and the thiolate coligands as well as the NH … S hydrogen bonding.

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Reference：
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.Recommanded Product: Dichloro(benzene)ruthenium(II) dimer

The complex cations [Ru(C7H16N2)(C 10H14)Cl]+, [Ru(C7H 16N2)(C6H6)Cl]+, [Ru(C9H18N2)(C6H6)Cl] +, [Ru(C9H18N2)(C10H 14)Cl]+ and [Ru(C14H16N 2)(C10H14)Cl]+ have been synthesised from the reaction between the ruthenium-arene complexes [with C 6H6 (benzene) or C10H14 (p-cymene)] and the respective chiral diamines [C7H16N2 = (S)-(-)-2-aminomethyl-1-ethylpyrrolidine, C9H18N 2 = (S)-(+)-2-(pyrrolidinylmethyl)-pyrrolidine, or C 14H16N2 = (1R,2R)-(+)-1,2- diphenylethylenediamine], isolated and characterised as chloride salts using single-crystal X-ray diffraction. All complexes were fully characterised by elemental analysis, mass spectrometry, 13C and 1H NMR, and also found to exhibit catalytic activity in the transfer hydrogenation of acetophenone to 1-phenylethanol at 50C (enantiomeric excesses range from ca. 25% to 60%, and conversions from ca. 30% to 50%).

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

Synthetic Route of 15746-57-3. Let’s face it, organic chemistry can seem difficult to learn. Especially from a beginner’s point of view. Like 15746-57-3, Name is Cis-Dichlorobis(2,2′-bipyridine)ruthenium(II). In a document type is Article, introducing its new discovery.

In this paper, we describe the enantiospecific synthesis and the complete characterization of the two hexacoordinated ruthenium(II) monocations [Ru(bpy)2ppy]+ and [Ru(bpy)2quo]+ (bpy = 2,2?-bipyridine, ppy = phenylpyridine-H+, quo = 8-hydroxyquinolate) in their enantiomeric Delta and Lambda forms. The corresponding enantiomeric excesses (ee’s) are determined by 1H NMR using pure Delta-Trisphat (tris(tetrachlorobenzenedialato)phosphate(V) anion) as a chiral 1H NMR shift reagent. A complete 1H and 13C NMR study has been carried out on rac-[Ru(bpy)2ppy]PF6 and rac-[Ru(bpy)2quo]PF6. Additionally, the X-ray molecular structure of rac-[Ru(bpy)2quo]PF6 is reported; this latter species crystallizes in the monoclinic C2/c space group (a = 22.079 A, b = 16.874 A, c = 17.533 A, alpha = 90, beta = 109.08, gamma = 90).

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

Reference of 37366-09-9. Let’s face it, organic chemistry can seem difficult to learn. Especially from a beginner’s point of view. Like 37366-09-9, Name is Dichloro(benzene)ruthenium(II) dimer. In a document type is Article, introducing its new discovery.

Carbohydrate ligands have been studied in transition-metal-catalyzed hydrogenations in recent decades. Herein, we report the diastereoselective synthesis of trans-dichlorido(bisphosphane)ruthenium(II) complexes with four different methyl 2,3-diamino-4,6-O-benzylidene-2,3-dideoxy-alpha-D-hexopyranosides and their application as catalyst precursors in asymmetric hydrogenation reactions. Depending on the hexopyranose, an enantiomeric excess of up to 78 % was obtained. The Noyori-type hydrogenation catalyst precursor is modified with methyl 2,3-diamino-4,6-O-benzylidene-2,3-dideoxy-alpha-D-hexopyranoside ligands (glucose, mannose, gulose, and talose). The trans-dichloridoruthenium(II) complexes are diastereoselectively formed. Enantiomeric excesses of up to 78 % are obtained in enantioselective hydrogenation reactions under normal hydrogen pressure.

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

Synthetic Route 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.

Reaction of the bis-bidentate ligand, 1,3-bis((3-(pyridin-2-yl)-1H-pyrazol-1-yl)methyl)benzene (NN?NN), containing two chelating pyrazolyl-pyridine units connected by an aromatic spacer with platinum group metal complexes results in a series of cationic binuclear complexes, [(eta6-arene)2Ru2(NN?NN)Cl2]2+ (arene = C6H6, 1; p-iPrC6H4Me, 2; C6Me6, 3), [(eta5-C5Me5)2M2(NN?NN)Cl2]2+ (M = Rh, 4; Ir, 5), [(eta5-C5H5)2M2(NN?NN)(PPh3)2]2+ (M = Ru, 6; Os, 7), [(eta5-C5Me5)2Ru2(NN?NN)(PPh3)2]2+ (8) and [(eta5-C9H7)2Ru2(NN?NN)(PPh3)2]2+ (9). All these complexes have been isolated as their hexafluorophosphate salts and fully characterized by use of a combination of NMR spectroscopy, IR spectroscopy and mass spectrometry. The solid state structures of three complexes, [2][PF6]2, [4][PF6]2 and [6][PF6]2, has been determined by X-ray crystallographic studies.

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Reference：
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, name: Cis-Dichlorobis(2,2′-bipyridine)ruthenium(II)

4,5-Diazafluorene ligands, (L1) and (L2), have been synthesized from the reaction of 4,5-diazafluorenone-9-hydrazone with 4-(4-fluorophenoxy) benzaldehyde and 4,5-diazafluoren-9-one with 4-(4-fluorophenoxy) benzylamine hydrochloride in dry EtOH. Ru(II) complexes of the ligands Ru(II)-L1 and Ru(II)-L2 were prepared by treating the ligands with Ru(bpy)2CI2 in dry EtOH. The metal-to-ligand ratio of the Ru(II) complexes was found to be 1:1. The ligands and complexes were characterized by elemental analysis and spectra FTIR, UV-vis, 1H NMR, MS, and fluorescence studies.

Balanced chemical reaction does not necessarily reveal either the individual elementary reactions by which a reaction occurs or its rate law.name: Cis-Dichlorobis(2,2′-bipyridine)ruthenium(II). In my other articles, you can also check out more blogs about 15746-57-3

Reference：
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.Product Details of 37366-09-9

Three different series of novel mononuclear arene-ruthenium(II) complexes containing amino-phosphine ligands, namely, [RuCl2{kappa 1(P)-2-Ph2PC6H4CH 2NHR}(eta6-arene)], [RuCl2{kappa 1(P)-3-Ph2PC6H4CH 2NHR}(eta6-arene)], and [RuCl2{kappa 1(P)-4-Ph2PC6H4CH 2NHR}(eta6-arene)] (arene = C6H6, p-cymene, 1,3,5-C6H3Me3, C6Me 6; R = iPr, tBu; all combinations), have been synthesized and fully characterized. These readily accessible species are efficient catalysts for the selective hydration of organonitriles into amides under challenging reaction conditions, i.e., pure aqueous medium in the absence of any cocatalyst, being much more active than their corresponding nonfunctionalized triphenylphosphine counterparts [RuCl2(PPh 3)(eta6-arene)]. The results obtained in this study indicate that the (amino-phosphine)ruthenium(II) complexes operate through a “bifunctional catalysis” mechanism in which the ruthenium center acts as a Lewis acid, activating the nitrile molecule, and the P-donor ligand acts as a Brnsted base, the pendant amino group generating the real nucleophile of the hydration process, i.e., the OH- group.

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Reference：
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 15746-57-3, Name is Cis-Dichlorobis(2,2′-bipyridine)ruthenium(II),molecular formula is C20H16Cl2N4Ru, is a conventional compound. this article was the specific content is as follows.Product Details of 15746-57-3

Thioether complexes with the formula DeltaLambda-chloro(thioether)bis(2,2?-bipyridine)metal(II) (M = Ru, Os; thioether = dimethyl sulfide (3a+), diethyl sulfide (3b+), and tetrahydrothiophene (3c+)) have been synthesized. The rates of inversion at the sulfur atom of the thioether ligands have been measured by spin-inversion transfer and line-shape NMR methods. In every case, the ruthenium derivative exhibits a faster inversion frequency at a given temperature than the corresponding osmium derivative. In contrast, similar complexes with the formula chloro(delta/lambda-1,1?-biisoquinoline) (2,2?:6?,2″-terpyridine)metal(II), 4(M=Ru,Os)+, undergo atropisomerization of the misdirected 1,1?-biisoquinoline (1,1?-biiq) ligand with rates that are faster for osmium than ruthenium. As a result of the lanthanide contraction effect and the similar metric parameters associated with the structures of second-row and third-]row transition metal derivatives, steric factors associated with the isomerizations are presumably similar for the Ru and Os derivatives of these compounds. Since third-row transition metal complexes tend to have larger bond dissociation enthalpies (BDE) than their second-row congeners, we conclude the difference in reactivities of 3(M=Ru)+ versus 3(M=Os)+ and 4(M=Ru)+ versus 4(M=Os)+ are attributed to electronic effects. For 3, the S3p lone pair of the thioether, the principal sigma donor orbital, is orthogonal to the metal sigma acceptor orbital in the transition state of inversion at sulfur and the S 3s orbital is an ineffective sigma donor. Thus, a regular relationship between the kinetic and thermodynamic stabilities of 3(M=Ru)+ and 3(M=Os)+ is observed for the directed ? [misdirected]? ? directed (DMD) isomerization (the more thermodynamically stable bond is less reactive). In contrast, atropisomerization of 4+ involves redirecting (strengthening) the M-N bonds of the misdirected 1,1?-biiq ligand in the transition state. Therefore, an inverse relationship between the kinetic and thermodynamic stabilities of 4(M=Ru)+ and 4(M=Os)+ is observed for the misdirected ? [directed]? ? misdirected (MDM) isomerization (the more thermodynamically stable bond is more reactive). The rates obtained for 4+ are consistent with the rates of atropisomerization of Delta/Lambda-(delta/lambda)-1,1?-biisoquinoline)bis (2,2?-bipyridine)metal(II), 1(M=Ru,Os)2+, and (eta6-benzene) Delta/Lambda-(delta/lambda-1,1?-biisoquinoline)halometal(II), 2(M=Ru,Os;halo=Cl,I)+, that we reported previously. We term the relative rates of reaction of second-row versus third-row transition metal derivatives kinetic element effects (KEE = ksecond/kthird). While the KEE appears to be generally useful when comparing reactions of isostructural species (e.g. the relative rates of 1(M=Ru)2+, 1(M=Os)2+, and 1(M=Ir)3+), different temperature dependencies of reactions prevent the comparison of related reactions between species that have different structures (e.g., the 1,1?-biiq atropisomerization reactions of 1(M=Ru,Os)2+ versus 2(M=Ru,Os;halo=Cl,I)+ versus 4(M=Ru,Os)+). This problem is overcome by comparing entropies of activation and kinetic enthalpy effects (KHE = DeltaEta?third/ DeltaEta?second). For a given class of 1,1?-biiq complexes, we observe a structure/reactivity relationship between DeltaEta? and the torsional twist of the 1,1?-biiq ligands that are measured in the solid state.

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

Application of 37366-09-9. Let’s face it, organic chemistry can seem difficult to learn. Especially from a beginner’s point of view. Like 37366-09-9, Name is Dichloro(benzene)ruthenium(II) dimer. In a document type is Article, introducing its new discovery.

A highly chemo- and enantioselective hydrogenation of beta-diketones was achieved by using [Ru(benzene)(S)-SunPhosCl]Cl for consistency in THF. The neighboring heteroatoms played important roles in guaranteeing the reactivity and controlling the chemoselectivity. These results suggested a potential approach for the clean and facile synthesis of functionalized chiral beta-hydroxy ketones, which could otherwise be prepared through much less step-economic transformations.

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