Category: 15746-57-3

Application 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 photophysical processes have been investigated in first, second and third generation dendrimers with poly-(phenylenevinylene) branches and a ruthenium tris-bipyridine core, RuDn (n = 1-3). These dendrimers show very efficient forward singlet-singlet energy transfer from the branches to the ruthenium core upon UV irradiation, with efficiencies of 0.99 for RuD1 and 0.88 for RuD2 and RuD3 in CH2Cl2. The RuDn dendrimers show a bi-exponential emission decay in CH2Cl2, when excited with a 460 nm light with short lifetimes, however, the emission decay lifetimes become mono-exponential in 10% Triton X-100 aqueous solution (tau = 840 ns for RuD1, 890 ns for RuD2 and 1120 ns for RuD3).

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

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A synthetic protocol involving the Friedlaender reaction of 8-amino-7-quinolinecarbaldehyde followed by potassium dichromate oxidation was applied to 2,3,4-pentanetrione-3-oxime and 1-(pyrid-2?-yl)propane-1,2- dione-1-oxime to provide the ligands di-(phenathrolin-2-yl)-methanone (1) and phenanthrolin-2-yl-pyrid-2-yl-methanone (8), respectively. Ligand 1 complexed as a planar tetradentate with Pd(II) to form [Pd(1)](BF4)2 and with Ru(II) and two 4-substituted pyridines (4-R-py) to form [Ru(1)(4-R-py)2](PF6)2 where R = CF 3, CH3, and Me2N. With [Ru(bpy) 2Cl2], the dinuclear complex [(bpy)2Ru(1) Ru(bpy)2](PF6)4 was formed (bpy = 2,2?-bipyridine). Ligand 8 afforded the homoleptic Ru(II) complex [Ru(8)2](PF6)2, as well as the heteroleptic complex [Ru(8)(tpy)](PF6)2 (tpy = 2,2?;6,2?- terpyridine). The ligands and complexes were characterized by their NMR and IR spectra, as well as an X-ray structure determination of [Ru(1)(4-CH 3-py)2](PF6)2. Electrochemical analysis indicated metal-based oxidation and ligand-based reduction that was consistent with results from electronic absorption spectra. The complexes [Ru(1)(4-R-py)2](PF6)2 were sensitive to the 4-substituent on the axial pyridine: electron donor groups facilitated the oxidation while electron-withdrawing groups impeded it.

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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.Application In Synthesis of Cis-Dichlorobis(2,2′-bipyridine)ruthenium(II)

We report herein the preparation and characterization of dinuclear complexes with the bridging ligand 1,10-phenanthroline-5,6-dithiolate (phendt2-) bearing Ru(bpy)2 or Ir(ppy)2 at the diimine moiety and Ni(dppe), Ni(dppf), CoCp, RhCp?, and Ru(p-Me-iPr-benzene) at the dithiolate unit. In comparison with the mononuclear precursors used in the synthesis, all dinuclear complexes were characterized by absorption and photoluminescence spectroscopy as well as cyclic voltammetry. Because of the beneficial spectral and electrochemical properties of the Ir/Co complex for a light-driven charge separation, this complex was investigated in detail by time-resolved luminescence {nanosecond (ns)-resolution} and transient absorption spectroscopy {femtosecond (fs)-resolution}. All measurements supported by DFT calculations show that the observed effective luminescence quenching by the dithiolate coordinated metal is caused by an ultrafast singlet-singlet Dexter energy transfer.

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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.Safety of Cis-Dichlorobis(2,2′-bipyridine)ruthenium(II)

Five 3,5-difluorophenyl-substituted ruthenium complexes [Ru(bpy)2(dfpbpy)(ClO4)2] (Ru-Fbpy-bpy; bpy=bipyridine, dfpbpy=5,5?-di(3,5-difluorophenyl)-2,2?-bipyridine), [Ru(dpp)2(dfpbpy)(ClO4)2] (Ru-Fbpy-dpp; dpp=4,7-diphenyl-1,10-phenanthroline), [Ru(dpp)2(dfpphen)(ClO4)2] (Ru-Fphen-dpp; dfpphen=5,5?-di(3,5-difluorophenyl)-1,10-phenanthroline), [Ru(dpp)2(4,7-dfpphen)(ClO4)2] (Ru-Fdpp-dpp; 4,7-dfpphen=4,7-di(3,5-difluorophenyl)-1,10-phenanthroline), and [Ru(4,7-dfpphen)3(AsF6)2] (Ru-Fdpp) were synthesized, and their photophysical, electrochemical, and electroluminescent properties were studied systematically. The introduction of the electron-withdrawing group 3,5-difluorophenyl leads to a redshift of the emission of the ruthenium complexes. In addition, the 3,5-difluorophenyl substituent extends the pi conjugation of the ligand, and thus facilitates the metal-to-ligand charge-transfer process of the complexes. All the complexes display orange-red phosphorescent emissions centered at 638, 638, 624, 614, and 605 nm, respectively. Density functional theory calculations show that the lowest unoccupied molecular orbital of Ru-Fbpy-dpp, Ru-Fphen-dpp, and Ru-Fdpp-dpp are all distributed on the 3,5-difluorophenyl-substituted ligand. By using these complexes as emitters, highly luminescent single-layer devices are obtained. The optimized device based on Ru-Fdpp exhibits the highest luminous efficiency and power efficiency of 4.19 cd A-1 and 1.46 lm W-1, respectively. Bright ideas: Five 3,5-difluorophenyl-substituted ruthenium complexes have been synthesized and characterized. The photoluminescent efficiencies of the complexes improved after introduction of an electron-withdrawing substituent (see scheme). The complexes are suitable as dopant light-emitting materials for organic light-emitting diodes.

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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. 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, Recommanded Product: 15746-57-3

The synthesis, linear optical and nonlinear optical properties, as well as the electrochemical behavior of a series of proligands containing the 4-(4-N,N-dimethylaminostyryl)-1-methyl pyridinium (DASP+) group as a push-pull moiety covalently linked to terpyridine or bipyridine as chelating ligands are reported in this full paper. The corresponding multifunctional RuII and ZnII complexes were prepared and investigated. The structural, electronic, and optical properties of the pro-ligands and the ruthenium complexes were investigated using density functional theory (DFT) and time-dependent (TD) DFT calculations. A fairly good agreement was observed between the experimental and the calculated electronic spectra of the pro-ligands and their corresponding ruthenium complexes. A quenching of luminescence was evidenced in all ruthenium complexes compared with the free pro-ligands but even the terpyridinefunctionalized metal complexes exhibited detectable luminescence at room temperature. Second order nonlinear optical (NLO) measurements were performed by Harmonic Light Scattering and the contribution of the DASP+ moieties (and their relative ordering) and the metal-polypyridyl core need to be considered to explain the nonlinear optical properties of the metal complexes.

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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, Application In Synthesis of Cis-Dichlorobis(2,2′-bipyridine)ruthenium(II)

Three ruthenium complexes containing a bidentate piq ligand, [(piq)Ru(bpy)2]2+ (1), [(piq)Ru(phen)2]2+ (2), and [(piq)Ru(DIP)2]2+ (3) (piq = phenylisoquinolinate, bpy = 2,2?-bipyridine, phen = 1,10-phenanthroline, DIP = 4,7-diphenyl-1,10-phenanthroline), were prepared. The DNA binding properties of complexes 1?3 to double-stranded DNA were studied. The binding of 1?3 to calf-thymus DNA (ct-DNA) yielded lower emission intensities than those observed with the corresponding Ru complexes alone. To explore potential interactions of complexes 1?3 with lipid-rich organs in live cells, the emission properties of the Ru probes were studied with liposomes. The emission intensities of complexes 1?3 were enhanced to similar extents upon interaction with liposomes. The cytotoxic activities of the complexes against MDA-MB-231 and HUVECs were evaluated in vitro. The effects of complexes 1?3 on the survival of MDA-MB-231 cells were examined and compared with that of cis-platin. Complexes 2 and 3 were more cytotoxic to cancer cells than cis-platin. Complexes 1?3 showed cellular uptakes of 1.1, 10.6, and 76.6%, respectively, indicating that the greatest amount of complex 3 entered the cancer cells. Inhibition of cell migration by complexes 1?3 was also evaluated by the wound healing assay.

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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. 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 tripodal tris(urea) ligand with 2,2?-bipyridyl (bpy) substituents (L) has been designed and synthesized, which coordinates with three equivalents of Ru(bpy)2Cl2·2H2O, followed by treatment with NH4PF6, to afford the anion receptor [(bpy)6Ru3L](PF6)6 (1). The anion-binding behavior of the ligand L and the RuII-bpy functionalized receptor 1 toward different anions was investigated by 1H NMR (for L and 1), fluorescence, and UV-vis spectroscopy (for 1). Both compounds showed selective recognition of SO42- or H2PO4- ions in the 1:1 binding mode in the NMR studies. The RuII complex 1 displayed the metal-to-ligand charge transfer emission at 600 nm, which was quenched on addition of the sulfate and dihydrogen phosphate ions. Quantitative fluorescence titration experiments were carried out and the stability constants (log K) of the complex 1 with SO 42- and H2PO4- ions were obtained to be 4.73 and 4.69 M-1 (1:1 binding mode), respectively.

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

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A diruthenium dyad molecule consisting of a 2,2-(1H-pyrazole-3,5-diyl)dipyridine (Hbpp) bridging ligand with the formula out-/in-[(bpy)2Ru(bpp)Ru(L)(tpy)]n+ (bpy = 2,2?-bipyridine, tpy = 2,2?:6?,2??-terpyridine, L = Cl, CF3COO-, H2O or CH3CN and n = 2 or 3) has been prepared and fully characterised. The complex has been characterized by analytical and spectroscopic techniques and by X-ray diffraction analysis for two of the derivatives (Cl and CH3CN). Additionally, full electrochemical characterization based on cyclic voltammetry and square wave voltammetry has been also performed. The pH dependence of the redox couples for the aqua complex has also been studied and the corresponding Pourbaix diagram drawn. Furthermore, the capacity to photo-catalytically oxidize organic substrates, such as alcohols, alkenes, and sulfides, has been carried out and the overall stability and selectivity of the catalyst has been analysed.

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

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Reaction of hexa(hydroxybutenyl)benzene, 1a, and its FeCp+ complex, 1b, with halogeno-polypyridine in DMSO in the presence of KOH yields the hexapolypyridine ligands 2-4 and their iron-centered complexes 5-7. The hexaligands 3 and 4 were metallated using Ru(bipy)2Cl2 and Ru(terpy)Cl3, respectively, which gave correct yields of the hexaruthenium complexes 8 and 9. The iron-centered core 1b also reacted with [Ru(bipy)2(4-chloro-bipy)]2+(PF6 -)2 to give the hexaruthenated heptanuclear complex 11. Full characterizations including various mass spectrometry techniques verified the proposed structures. CNRS-Gauthier-Villars.

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

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The binuclear (2-) and trinuclear <(CN)5Cr-CN-Ru(bpy)2-NC-Cr(CN)5>(4-) bimetallic complexes have been synthesized and their photophysical behavior has been studied.Visible light absorption by the Ru(bpy)2(2+) chromophore leads to phosphorescence from the Cr(CN)6(3-) luminophore.The results demonstrate the occurrence of a fast (tau<10ns), efficient (eta=1) intramolecular exchange energy transfer process from the MLCT triplet of the Ru(II) fragment to the doublet state of the Cr(CN)6(3-) fragment.Distinctive features of these chromophore-luminophore complexes with respect to the behavior of the isolated luminophore are as follows: (i) large light-harvesting efficiency (antenna-effect); (ii) response to visible light (spectral sensitization); (iii) 100percent efficient population of the emitting state; (iv) photostability.The excited-state absorption (ESA) spectrum of both bimetallic complexes exhibits a peculiar visible band not shown by free Cr(CN)6(3-).This band corresponds to intervalence-transfer transitions from Ru(II) to excited Cr(III).Contrary to the behavior of free Cr(CN)6(3-), the bimetallic complexes also undergo a distinct bimolecular doublet-doublet annihilation process (rate constants k of the order of 1E7-1E8 M-1 s-1).The mechanism is thought to involve oxidation of Ru(II) and reduction of Cr(III).Intramolecular processes of the same type are probably responsible for the failure to observe doubly excited species upon two-photon excitation of the trinuclear complex. I hope this article can help some friends in scientific research. I am very proud of our efforts over the past few months and hope to 15746-57-3, help many people in the next few years., Synthetic Route of 15746-57-3

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