Tag: M.W:400-500

Related Products 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.

A dinuclear ruthenium(II) complex linked via a reducible azo group [Ru(bpy)2(azobpy)Ru(bpy)2]Cl4 (Ru 2azo, bpy = 2,2?-bipyridine, azobpy = 4,4?-azobis (2,2?-bipyridine)) was adopted as a probe for thiols. Results showed that Ru2azo could selectively and effectively react with biological thiols (such as cysteine, homocysteine and glutathione) with a 10- 7 M detection limit. After it reacted with thiols, the original gray color of Ru2azo solution immediately turned yellow and the luminescence significantly enhanced, showing “naked-eye” colorimetric and “off-on” luminescent dual-signaling response for thiols. Mechanism studies demonstrated that Ru2azo reacted with thiols undergoing a two-electron transfer process, forming the azo2 – anion product.

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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. 37366-09-9, C12H12Cl4Ru2. A document type is Article, introducing its new discovery., Formula: C12H12Cl4Ru2

The reaction of [(eta6-C6H6)RuCl(mu-Cl)]2 with chalcogenoether substituted 1H-pyrazole ligands (L1-L3) in methanol have yielded three novel Ru(II) half-sandwich complexes [(eta6-C6H6)RuCl(L)]PF6 (1?3) in high yield under the ambient reaction conditions. The NMR, MS and FT-IR analytical techniques were used to identify their structures. The molecular structures of the complexes 2 and 3 were established with X-ray crystallographic analysis and revealed a pseudo-octahedral half sandwich piano-stool geometry around ruthenium in each complex. Complexes 1?3 are thermally robust and were found to be insensitive towards the air and moisture. All the complexes were found to be catalytically active and produced the excellent yields of amides (up to 95%) from corresponding aldehydes. In contrast to the previous reported catalytic systems for aldehyde to amide transformation, the present complexes 1?3 are very efficient and have several advantages in terms of low catalyst loading, reaction time, temperature and wide applicability for various substituted aldehydes. Owing to the stronger sigma-donor coordination properties of selenium containing ligands, the complex 2 was found to be more efficient as compare to the sulphur and tellurium analogues.

Interested yet? Keep reading other articles of 37366-09-9!, Formula: C12H12Cl4Ru2

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. 37366-09-9, Name is Dichloro(benzene)ruthenium(II) dimer, molecular formula is C12H12Cl4Ru2. In a Article，once mentioned of 37366-09-9, SDS of cas: 37366-09-9

Dehydrogenation of formic acid over various Ru-arene complexes containing N-donor chelating ligands was investigated in H2O and isolated and characterized several important catalytic intermediate species to elucidate the reaction pathway for formic acid dehydrogenation. Among the studied complexes, Ru-arene complexes, namely [(eta6-C6H6)Ru(kappa2-NpyNH2-AmQ)Cl]+ (C-2), [(eta6-C10H14)Ru(kappa2-NpyNH2-AmQ)Cl]+ (C-3) and [(eta6-C6H6)Ru(kappa2-NpyNHMe-MAmQ)Cl]+ (C-4) [AmQ = 8-aminoquinoline and MAmQ = 8-(N-methylamino)quinoline] were proved to be the efficient catalysts for formic acid dehydrogenation at 90 C, even in the absence of base. With an initial TOF of 940 h?1, complex C-4 displayed the highest catalytic activity for formic acid dehydrogenation in H2O and it can be recycled up to 5 times with a TON of 2248. Effect of temperature, pH, formic acid and catalyst concentration on the reaction kinetics were also investigated in detail. Extensive mechanistic investigations using mass spectrometry and NMR evidenced the formation of a coordinatively unsaturated species [(eta6-C6H6)Ru(kappa2-NpyNH-AmQ)]+ (C-2A)/[(eta6-C6H6)Ru(kappa2-NpyNMe-MAmQ)]+ (C-4A) as the active component during the catalytic dehydrogenation of formic acid. We further characterized the dimer-form of C-2A, possibly the catalyst resting state, by single-crystal X-ray crystallography.

Sometimes chemists are able to propose two or more mechanisms that are consistent with the available data.SDS of cas: 37366-09-9, If a proposed mechanism predicts the wrong experimental rate law, however, the mechanism must be incorrect.Welcome to check out more blogs about 37366-09-9, in my other articles.

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

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

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

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

The new potentially bidentate pyrazole-phosphinite ligands [(3,5-dimethyl-1H-pyrazol-1-yl)methyl diphenylphosphinite] (L1) and [2-(3,5-dimethyl-1H-pyrazol-1-yl)ethyl diphenylphosphinite] (L2) were synthesised and characterised. The reaction of L1 and L2 with the dimeric complexes [Ru(eta6-arene)Cl2] 2 (arene = p-cymene, benzene) led to the formation of neutral complexes [Ru(eta6-arene)Cl2(L)] (L = L1, L2) where the pyrazole-phosphinite ligand is kappa1-P coordinated to the metal. The subsequent reaction of these complexes with NaBPh4 or NaBF4 produced the [Ru(eta6-p- cymene)Cl(L2)][BPh4] and [Ru(eta6-benzene) Cl(L2)][BF4] compounds which contain the pyrazole-phosphinite ligand kappa2-P,N bonded to ruthenium. All the complexes were fully characterised by analytical and spectroscopic methods. The structure of the complex [Ru(eta6-p-cymene)Cl(L 2)][BPh4] was also determined by a X-ray single crystal diffraction study.

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