Category: ruthenium-catalysts

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, name: (1,3-Bis(2,4,6-trimethylphenyl)-2-imidazolidinylidene)dichloro(phenylmethylene)(tricyclohexylphosphine)ruthenium

The use of phosphites in second generation, ruthenium-based olefin metathesis pre-catalysts leads to an improvement in catalyst stability and activity at low catalyst loadings.

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 246047-72-3 is helpful to your research., name: (1,3-Bis(2,4,6-trimethylphenyl)-2-imidazolidinylidene)dichloro(phenylmethylene)(tricyclohexylphosphine)ruthenium

Reference：
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. 32993-05-8, Name is Chlorocyclopentadienylbis(triphenylphosphine)ruthenium(II), molecular formula is C41H35ClP2Ru. In a Article，once mentioned of 32993-05-8, HPLC of Formula: C41H35ClP2Ru

The reaction ofbeta-keto phosphines Ph2PCH(R?)C(=O)R (a, R = But, R? = H; b, R = Ph, R? = H; c, R = But, R? = Me) with [RuCl(eta5-CnHm)(PPh3)2] complexes (1, CnHm = cyclopentadienyl; 1?, CnHm = indenyl) affords neutral [RuCl(eta5-CnHm)(PPh3){eta 1(P)-keto phosphine}] (2a,b and 2?a). Cationic derivatives, [Ru(eta5-CnHm)(PPh3) {eta2(P,O)-keto phosphine}][PF6] (3a,b and 3?a-c), are obtained by the reactions of complexes 1 and 1? with the keto phosphines in the presence Of NH4PF6. Complex 3?c is diastereoselectively obtained as the SRU,RC/RRU,SC enantiomeric pair, as shown by an X-ray crystal structure analysis. Owing to the hemilabile ability of the keto phosphine ligand, complexes 3a and 3?a easily react with 1,1-diphenyl-2-propyn-1-ol to yield the allenylidene complexes [Ru(=C=C=CPh2)(eta5-CnHm)(PPh 3){eta1(P)-Ph2PCH2C(=O)Bu t}][PF6] (5a and 5?a, respectively). Treatment of complexes 3a and 3?a with K2CO3 in methanol leads to the deprotonation of the coordinated keto phosphine to give the neutral phosphino enolate derivatives [Ru(eta5-CnHm)(PPh3){eta 2(P,O)-Ph2PCH=C-(But)O}] (6a and 6?a, respectively). In contrast, allenylidene complexes 5a and 5?a react with K2CO3 or KOH in methanol to afford the alkynyl complexes [Ru{C=CC(OMe)Ph2}(eta5-CnH m)(PPh3){eta1(P)-Ph2PCH 2C(=O)But)] (7a and T?a), which are formed through the nucleophilic addition of the methoxy group to the Cgamma atom of the allenylidene chain. Similarly, the ethoxy alkynyl derivative 8a is obtained by the reaction of 5a with KOH in ethanol. Under mild basic conditions (K2CO3/THF) complexes 5a and 5?a are deprotonated, resulting conversion into the neutral derivatives [Ru{eta2(C,P)-C(=C=CPh2)CH[C(=O)But]PPh 2}-(eta7CnHm)(PPh3)] (9a and 9?a, respectively) through the generation of a novel phosphamet-allacyclobutane ring and in accord with a diastereoselective process. The molecular structure of 9?a, determined by an X-ray crystal structure analysis, discloses a SRU,Rc/RRU,Sc configuration and shows a nearly planar Ru-P(2)-C(2B)-C(1) ring bearing an almost linear eta1(C)-coordinated allenyl group (C(1)-C(2A)-(3A) = 169.6(8)). The formation of the four-membered ring probably takes place in a putative intermediate arising from the deprotonation of the eta1-(P)-keto phosphine ligand in 5a and 5?a. The subsequent intramolecular carbon-carbon bond formation between the allenylidene group and the nucleophilic eta1(P)-phosphino enolate ligands is geometrically constrained to occur at the electrophilic Calpha site of the allenylidene ligand, and the ruthenium fragment efficiently directs the configuration of the new stereogenic carbon atom in the resulting metallacycle ring.

Balanced chemical reaction does not necessarily reveal either the individual elementary reactions by which a reaction occurs or its rate law.HPLC of Formula: C41H35ClP2Ru. In my other articles, you can also check out more blogs about 32993-05-8

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

Electric Literature of 37366-09-9, An article , which mentions 37366-09-9, molecular formula is C12H12Cl4Ru2. The compound – Dichloro(benzene)ruthenium(II) dimer played an important role in people’s production and life.

Stable dinuclear transition metal complexes,[(I·6- C6H6)2Ru2(L1)Cl2] 2+ (1), [(I·6-p-iPrC6H 4Me)2Ru2(L1)Cl2]2+ (2), [(I·6-C6Me6)2Ru 2(L1)Cl2]2+ (3), [(I·6- C6H6)2Ru2(L2)Cl2] 2+ (4),[(I·6-p-iPrC6H 4Me)2Ru2(L2)Cl2]2+ (5), [(I·6-C6Me6)2Ru 2(L2)Cl2]2+ (6), [(I·5- C5Me5)2Rh2(L1)Cl2] 2+ (7), [(I·5-C5Me 5)2Ir2(L1)Cl2]2+ (8),[(I·5-C5Me5) 2Rh2(L2)Cl2]2+ (9), and [(I·5-C5Me5)2Rh 2(L2)Cl2]2+ (10), with the bis-bidentate ligands 1,3-bis(di-2-pyridylaminomethyl)benzene (L1) and 1,4-bis(di-2- pyridylaminomethyl)benzene (L2), which contain two chelating dipyridylamine units connected by an aromatic spacer, were synthesized. The cationic dinuclear complexes were isolated as their hexafluorophosphate salts and characterized by using a combination of NMR, IR, and UV/Vis spectroscopic methods and mass spectrometry. The solid-state structure of complex 8 as a representative was determined by X-ray structure analysis. Copyright

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Reference：
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, category: ruthenium-catalysts

The synthesis of the ABCDEF-ring of ciguatoxin 3C was achieved via a route that included anion coupling of a dimethyldithioacetal mono-S-oxide derivative corresponding to the AB-ring and an aldehyde corresponding to the EF-ring, followed by cyclization using reductive etherification. The AB-ring was synthesized from a known D-glucose derivative based on ring-closing olefin metathesis, and the EF-ring was prepared by a process employing chirality-transferring Ireland-Claisen rearrangement and ring-closing olefin metathesis.

Sometimes chemists are able to propose two or more mechanisms that are consistent with the available data.category: ruthenium-catalysts, 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.

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

Application of 37366-09-9, 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.37366-09-9, Name is Dichloro(benzene)ruthenium(II) dimer, molecular formula is C12H12Cl4Ru2. In a patent, introducing its new discovery.

Polar phosphonic acid-derived Ru-BINAP systems were used to catalyze asymmetric hydrogenation of beta-keto esters in room temperature ionic liquids (RTILs) with complete conversions and ee values higher than those obtained from homogeneous reactions in MeOH (up to 99.3%), and were recycled by simple extraction and used for four times without the loss of activity and enantioselectivity.

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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, Recommanded Product: Cis-Dichlorobis(2,2′-bipyridine)ruthenium(II)

We have synthesized a number of dinuclear species containing both identical or different metal-based components by employing new bridging ligands having either aliphatic or aromatic spacers and taking advantage of the “complexes as metals and complexes as ligands” synthetic strategy. The bridging ligands are dpt-S-dpt (S is 1,4-cyclohexyl, 1,4-phenyl, 4,4?-biphenyl; dpt is 4-amino-3,5-bis(2-pyridyl)-1,2,4-triazole; the connections between S and dpt are provided by amide links). The complexes synthesized are: [(bpy)2Ru(dpt-S-dpt)Ru(bpy)2](PF6)4 (bpy=2,2?-bipyridine; biq=2,2?-biquinoline; S=1,4-cyclohexyl (1), 1,4-phenyl (4), 4,4?-biphenyl (7)); [(biq)2Ru(dpt-S-dpt)Ru(biq)2](PF6)4 (S=1,4-cyclohexyl (2), 1,4-phenyl (5), 4,4?-biphenyl (8)); [(bpy)2Ru( dpt-S-dpt )-Ru(biq)2](PF6)4 (S=1,4-cyclohexyl (3), 1,4-phenyl (6), 4,4?-biphenyl (9)). The absorption spectra, luminescence properties and redox behavior of all the compounds have been studied. In the complexes containing different metal-based components, photoinduced energy transfer occurs from the higher-lying Ru ? bpy CT level, centered on a metal subunit, to the lower-lying Ru ? biq CT excited state, centered on the other metal component. In fluid solution at room temperature, the energy transfer is suggested to be mediated by a two-step electron transfer mechanism, whereas direct energy transfer between the chromophores most likely occurs at 77 K in rigid matrix. At the moment we are not able to say if the energy transfer at 77 K takes place via electron exchange or coulombic mechanisms. The results obtained indicate that the efficiency of the processes depends on the donor-acceptor distance, as expected, and that occasional pi bonds which are present within the bridging ligands cannot be used for speeding up electron transfer in multicomponent systems if the main skeleton of the bridge is made by sigma bonds.

Balanced chemical reaction does not necessarily reveal either the individual elementary reactions by which a reaction occurs or its rate law.Recommanded Product: 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

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, category: ruthenium-catalysts.

A series of water soluble compounds of general formula [{(eta6-arene)Ru(HMP)Cl}], [eta6-arene = eta6-cymene (1), eta6-HMB (2), eta6-C6H6 (3); HMP = 5-hydroxy-2-(hydroxymethyl)-4-pyrone] have been prepared by the reaction of [{(eta6-arene) RuCl2}2] with HMP. The complexes 1 and 2 react with NaN3 to give in excellent yield tetra-azido complexes [{(eta6-arene)Ru(muN3)N3}2] (arene = cymene 4, HMB = 5) but similar reaction of complex 3 with NaN3 yielded di-azdo complex [{(eta6-C6H6)Ru(muN3)Cl}2] (6). Reaction of [{(eta6-arene)Ru(muN3)Cl}2] with HMP in the presence of NaOMe resulted in the formation of azido complex [{(eta6-arene)Ru(HMP)N3}]. Mono and dinuclear complexes [{(eta6-arene)Ru(HMP)(L1)}]+ and [{(eta6-arene)Ru(HMP)}2(muL2)]2+ were also prepared by the reaction of complexes 1 and 2 with the appropriate ligand, L1 or L2 in the presence of AgBF4 (L1 = PyCN, DMAP; L2 = 4,4?-bipy, pyrazine). The complexes are characterized on the basis of spectroscopic data and molecular structures of three representative compounds have been determined by single crystal X-ray diffraction study.

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

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

Application of 20759-14-2. Chemistry is an experimental science, and the best way to enjoy it and learn about it is performing experiments.Introducing a new discovery about 20759-14-2, Name is Ruthenium(III) chloride hydrate

Osmium(IV) dithioether complexes have been prepared from the ligands and sodium hexachloro-osmate(IV); (L’=MeS(CH2)2SMe or MeSCH=CHSMe) are formed from K2.Iridium(III) anions, , cis and trans-, , and 2, are oxidized by chlorine to the corresponding iridium(IV) complexes.Halogen oxidation of produces (X = Cl or Br) and two unstable complexes .Attempts to prepare thioether complexes of RuIV, RhIV, PdIV, CoIII and NiIII have been unsuccessful .The isolated complexes have been characterized by i.r. and electronic spectroscopy, and where appropriate magnetic measurements and 1H n.m.r. spectroscopy.Variable-temperature 1H n.m.r. spectra show that inversion at sulphur co-ordinated to PtIV is more difficult than in the platinum(II) analogues.Thermal decomposition of (X = Cl,Br, or I) involves both dehalogenation and dealkylation.

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Reference：
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, category: ruthenium-catalysts

Three new complexes, [(eta6-C6H6)RuCl(C5H4N-2-CH=N-Ar)]PF6 (Ar = phenylmethylene (1), (4-methoxyphenyl)methylene (2), and phenylhydrazone (3)), were prepared by reacting [(eta6-C6H6)Ru(mu-Cl)Cl]2 with N,N?-bidentate ligands in a 1 : 2 ratio. Full characterization of the complexes was accomplished using 1H and 13C NMR, elemental and thermal analyses, UV?vis and IR spectroscopy and single crystal X-ray structures. Single crystal structures confirmed a pseudo-octahedral three-legged, piano-stool geometry around Ru(II), with the ligand coordinated to the ruthenium(II) through two N atoms. The cytotoxicity of the mononuclear complexes was established against three human cancer cell lines and selectivity was also tested against non-cancerous human epithelial kidney (HEK 293) cells. The compounds were selective toward the tumor cells in contrast to the known anti-cancer drug 5-fluoro uracil which was not selective between the tumor cells and non-tumor cells. All the compounds showed moderate activity against MCF7 (human breast adenocarcinoma), but showed low antiproliferative activity against Caco-2 and HepG2. Also, antimicrobial activities of the complexes were tested against a panel of antimicrobial-susceptible and -resistant Gram-negative and Gram-positive bacteria. Of special interest is the anti-mycobacterial activity of all three synthesized complexes against Mycobacteriumsmegmatis, and bactericidal activity against resistant Enterococcusfaecalis and methicillin-resistant Staphylococcusaureus ATCC 43300.

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

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

Related Products of 15746-57-3. Chemistry is an experimental science, and the best way to enjoy it and learn about it is performing experiments.Introducing a new discovery about 15746-57-3, Name is Cis-Dichlorobis(2,2′-bipyridine)ruthenium(II)

We have recently disclosed [(dtbpy)2RuCl2] as an effective precatalyst for chemoselective C-H hydroxylation of C(sp3)-H bonds and have noted a marked disparity in reaction performance between 4,4?-di-tert-butyl-2,2?-bipyridine (dtbpy)- and 2,2?-bipyridine (bpy)-derived complexes. A desire to understand the origin of this difference and to further advance this catalytic method has motivated the comprehensive mechanistic investigation described herein. Details of this reaction have been unveiled through evaluation of ligand structure-activity relationships, electrochemical and kinetic studies, and pressurized sample infusion high-resolution mass spectrometry (PSI-MS). Salient findings from this investigation include the identification of more than one active oxidant and three disparate mechanisms for catalyst decomposition/arrest. Catalyst efficiency, as measured by turnover number, has a strong inverse correlation with the rate and extent of ligand dissociation, which is dependent on the identity of bipyridyl 4,4?-substituent groups. Dissociated bipyridyl ligand is oxidized to mono- and bis-N-oxide species under the reaction conditions, the former of which is found to act as a potent catalyst poison, yielding a catalytically inactive tris-ligated [Ru(dtbpy)2(dtbpy N-oxide)]2+ complex. Insights gained through this work highlight the power of PSI-MS for studies of complex reaction processes and are guiding ongoing efforts to develop high-performance, next-generation catalyst systems for C-H hydroxylation.

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