Tag: M.W:400-500

Reference of 15746-57-3, 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. 15746-57-3, C20H16Cl2N4Ru. A document type is Article, introducing its new discovery.

Two new bipyridine ligands containing, respectively, two and four pyrene units were prepared. The obtained compounds were employed to synthesize new pyrene labeled ruthenium (II) trisbipyridine complex as well as a pyrene labeled ruthenium (II) trisbipyridine cored dendrimer. The obtained bipyridine ligands and the ruthenium complexes were characterized by NMR spectroscopy and MALDI-TOF mass spectroscopy. The optical and photophysical properties of the luminescent macromolecules were studied by absorption and fluorescence spectroscopy. It was noticed that the absorption spectra of the obtained complexes correspond to the sum of the absorption spectra of their components, which indicates a lack of interaction in the ground state. Efficient energy transfer was observed from pyrene units to the metal complex core resulting in the observation of the characteristic ruthenium bipyridine emission band upon excitation at the pyrene absorption wavelength. Moreover, efficient protection to oxygen quenching was remarked in the first generation dendrimer.

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

Electric Literature of 15746-57-3, An article , which mentions 15746-57-3, molecular formula is C20H16Cl2N4Ru. The compound – Cis-Dichlorobis(2,2′-bipyridine)ruthenium(II) played an important role in people’s production and life.

In an effort to explore new systems with highly reducing excited states, we prepared a series of Ru(II) complexes of the type Ru(L)2quo1 (L = bpy (2,2?-bipyridine), phen (1,10-phenanthroline), dmphen (4,7-dimethyl-l,10-phenanthroline), tmphen (3,4,7,8-tetramethyl-l,10-phenanthroline); quo- = 8-quinolate) and investigated their photophysical and redox properties. The absorption and emission spectra of the Ru(L)2quo+ are significantly red-shifted relative to those of the parent complexes Ru(L)32+, with emission maxima in the 757-783 nm range in water. The Ru(L)2quo+ systems are easily oxidized with E1/2(RuIII/III) values ranging from +0.62 to +0.70 V vs NHE, making the emissive Ru ? phen MLCT (metal-to-ligand charge transfer) excited states (E00 ? 1-95 eV in CH3CN) of the Ru(L)2quo+ complexes significantly better reducing agents than the MLCT states of the parent Ru(L)32+ complexes. Emission lifetimes of 17.0 and 32.2 ns were measured for Ru(phen)2quo+ in water and acetonitrile, respectively, and 11.4 ns for Ru(bpy)2quo+ in water. Transient absorption results are consistent with the formation of reduced methyl viologen upon Ru(phen)2quo+ excitation with visible light in water. The possibility of observing the Marcus inverted region in the forward bimolecular electron transfer reaction from the highly reducing*Ru(phen)2quo+ excited state was explored with neutral electron acceptors with reduction potentials ranging from +0.25 to -1.15 V vs NHE.

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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. 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: 37366-09-9

1,4-Bis(phenylthio/seleno methyl)-1,2,3-triazoles (L1-L4) synthesized by a ‘Click’ reaction react with [{(eta6-C6H6)RuCl(mu-Cl)}]2 and NH4PF6 resulting in complexes [(eta6-C6H6)RuClL]PF6 (1-4 for L = L1-L4) in which the ligands coordinate in a bidentate mode through S/Se and N of triazole. The CH2EPh (E = S or Se) attached to nitrogen of triazole remains pendent. Ligands and complexes have been authenticated with multinuclei NMR, IR and HR-MS. Single crystal structures of complexes 1-4 have been solved. The Ru-S and Ru-Se bond lengths (A) are respectively 2.388(2)/2.3902(19) and 2.5007(4)/2.5262(19). The disposition of benzene ring, N, S/Se and Cl around Ru is of a piano stool type. For catalytic oxidation of alcohols [Oppenauer-type and with N-methylmorpholine-N-oxide (NMO)] and transfer hydrogenation (TH) of carbonyl compounds [with 2-propanol and glycerol] all the four complexes have been found efficient. The optimum catalyst loadings (in mol%) are: 0.01 (NMO), 0.1 (Oppenauer), 0.01 (TH with 2-propanol) and 0.5 (TH with glycerol). Interestingly, time profiles (under optimum conditions) of two catalytic oxidations and TH’s are almost similar, suggesting that they are competitive on appropriate catalyst loading. DFT calculations are consistent with somewhat low reactivity of 1 in comparison to those of 2-4.

Balanced chemical reaction does not necessarily reveal either the individual elementary reactions by which a reaction occurs or its rate law.Recommanded Product: 37366-09-9. 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

Electric Literature 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

A novel class of heterodinuclear Pt?Ru complexes are provided, and the methods for preparing the complexes are described. The inhibitory activities of the heterodinuclear Pt?Ru complexes against cancer/tumor cell growth, including cancer/tumor cells having a resistance to cisplatin, are further demonstrated.

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

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, name: Dichloro(benzene)ruthenium(II) dimer

The reactions of 2-(pyridine-2-ylmethylsulfanyl)benzoic acid (L) with [(5-Cp/6-benzene)MCl(-Cl)]2, (benzene, M = Ru; Cp, M = Rh, Ir) at room temperature followed by treatment with NH 4PF6 result in a new class of water-soluble half-sandwich complexes [(5Cp/6-benzene)M(L)Cl][PF6] (13, respectively, for M = Ru, Rh, Ir). Their characteristic HR-MS and 1H and 13C{1H} NMR spectra have been found. The single-crystal structures of 13 have been established with X-ray crystallography. The Ru S, Rh S, and Ir S bond lengths are 2.4079(6), 2.3989(10), and 2.3637(14), respectively. Complexes 13 have been found to be efficient for catalytic transfer hydrogenation (TH) of carbonyl compounds in water with glycerol as a hydrogen donor. Glycerol has been explored for TH in water for the first time. The efficiency in water of other hydrogen sources, viz. HCOOH, citric acid, ascorbic acid, and 2-propanol, is less and/or is pH dependent. Catalysis with glycerol as a hydrogen source is pH independent and appears to be homogeneous. Higher reactivity for the Rh complex in comparison to the Ru and Ir species has been observed. DFT calculations are generally consistent with the experimental values of bond lengths and angles and catalytic reactivity order.

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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, Application In Synthesis of Dichloro(benzene)ruthenium(II) dimer

The present invention relates to a ruthenium precursor represented by Chemical Formula 1, and the ruthenium precursor has the advantages of having improved thermal stability and volatility and not having to use oxygen when depositing a thin film, and thus is capable of forming a high-quality ruthenium thin film.

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 Dichloro(benzene)ruthenium(II) dimer. 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)

Pyrazin-2-yl 2-pyridyl sulfide (pzpys) has been prepared by reaction of 2-sulfanylpyridine with chloropyrazine. As shown by 1H NMR spectroscopy, its major isomer has two binding sites which are inequivalent, one chelating through the N1-pyrazine and N-pyridine atoms, the other monodentate through the N4 atom of the pyrazine ring. By reaction of pzpys with [RuL2(NO)(NO2)][PF6]2 [(L = 2,2?-bipyridine (bipy) or di-2-pyridyl sulfide (dps)] the mononuclear complexes [RuL2(pzpys)(NO2)][PF6] have been obtained in which pzpys is the monodentate. The reactions of pzpys with cis-[RuL2Cl2] complexes [L = bipy, 1,10-phenanthroline (phen) or dps] have been studied. The dps derivative reacts with a large excess of pzpys affording [Ru(dps)2(pzpys)Cl]-[PF6] in which pzpys is monodentate. On the contrary the bipy and phen (L) derivatives, under the same experimental conditions, undergo substitution of both chloride ligands giving, as major products, [RuL2(pzpys)][PF6]2 in which pzpys is chelated. When the reactions were carried out in the presence of a stoichiometric amount of pzpys the binuclear complexes [L2Ru(pzpys)RuL2Cl][PF6]3 (L = bipy or phen) were slowly formed. The mononuclear complexes have been used as ligands in the reactions with [Ru-(bipy)2Cl2] giving the new binuclear species [L2Ru(pzpys)RuL2(NO2)][PF6] 3 (L = bipy or phen). The compounds have been fully characterized by infrared, UV/VIS, 1H and 13C NMR spectroscopies. In acetonitrile solution [Ru(bipy)2(pzpys)Cl][PF6] undergoes a reversible RuII ? RuIII electron transfer. In contrast, the one-electron oxidation of [Ru(dps)2(pzpys)Cl][PF6], [Ru(bipy)2(pzpys)(NO2)][PF6] and [Ru(bipy)2(pzpys)][PF6]2 is complicated by subsequent chemical reactions. The binuclear complex [(bipy)2Ru(pzpys)Ru(bipy)2Cl][PF6]3 undergoes two consecutive one-electron oxidations (DeltaE?? = 0.55 V), which allow the corresponding RuIIRuIII species to be classified as a completely delocalized (Class III) mixed-valence compound.

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

The reaction rate of a catalyzed reaction is faster than the reaction rate of the uncatalyzed reaction at the same temperature.15746-57-3, Name is Cis-Dichlorobis(2,2′-bipyridine)ruthenium(II), molecular formula is C20H16Cl2N4Ru. In a Article，once mentioned of 15746-57-3, name: Cis-Dichlorobis(2,2′-bipyridine)ruthenium(II)

Ru(II)-complex-based DNA photocleavers have been extensively studied for their potential application in photodynamic therapy (PDT) and photodynamic antimicrobial chemotherapy (PACT). However, their MLCT absorption maxima are generally shorter than 600 nm, limiting PDT/PACT application severely. In this work, by incorporating a 5-chloro-8-oxyquinolate-based noninnocent ligand into a merocyanine scaffold Cl-7-IVQ, we obtained a new Ru complex of this ligand, [Ru(bpy)2(Cl-7-IVQ)]2+, which has intense absorption in the window 600-700 nm and enables an efficient ?OH-mediated DNA photocleavage. This long-wavelength absorption band has a character of MLLCT transition from the hybrid Ru(dpi)-Cl-7-IVQ(pi) orbital to the pi*(Cl-7-IVQ) orbital and thus a contribution from the pipi* transition of the merocyanine framework, which endows the complex with a molar extinction coefficient as high as 1.73 × 104 M-1 cm-1 at 649 nm and allows for an efficient DNA photocleavage under an irradiation of low intensity. [Ru(bpy)2(Cl-7-IVQ)]2+ represents the first Ru(II)-complex-based DNA photocleaver that has an MLCT absorption maximum above 600 nm and can selectively inactivate E. coli bacterial cells over HeLa cells upon red light irradiation.

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

Electric Literature of 15746-57-3, 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.15746-57-3, Name is Cis-Dichlorobis(2,2′-bipyridine)ruthenium(II), molecular formula is C20H16Cl2N4Ru. In a patent, introducing its new discovery.

The chemical shifts of K(alpha2), K(alpha1), K(beta3) and K(beta1) lines are measured and analyzed. The Mo, Tc, and Ru compounds, including the metal clusters, are represented diagrammatically on the following coordinates: the chemical shifts of the centers of gravity of the K(alpha1,2) and K(beta1,3) doublets and the changes Q(5s) and Q(4d) in the relative partial charges. The compounds are distributed in a regular manner, thereby allowing one to reveal some specific features in the electronic states of transition-element atoms, including those peculiarities associated with the M-M interactions.

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

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, COA of Formula: C12H12Cl4Ru2

The intramolecular cyclopropanation of various trans-allylic diazoacetates and alkenyl diazoketones has been achieved with excellent enantioselectivities of up to 98% ee and in quantitative yields by using a water-soluble ruthenium(II)/hydroxymethyl(phenyl)oxazoline catalyst in a water/ether biphasic medium. The catalyst could be reused at least five times.

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