Category: 37366-09-9

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Tetradentate selenium ligand as a building block for homodinuclear complexes of Pd(II) and Ru(II) having seven membered rings or bis-pincer coordination mode: High catalytic activity of Pd-complexes for Heck reaction

1,2,4,5-Tetrakis(phenyselenomethyl)benzene (L) has been synthesized by reaction of in situ generated PhSe- with 1,2,4,5- tetrakis(bromomethyl)benzene in N2 atmosphere. Its first bimetallic complexes and a bis-pincer complex having compositions [(eta3- C3H5)2Pd2(L)][ClO4] 2 (1) [Pd2(C5H5N) 2(L)][BF4]2 (2) and [(eta6-C 6H6)2Ru2(L)Cl2][PF 6]2 (3) have been synthesized by reacting L with [Pd(eta3-C3H5)Cl]2, [Pd(CH 3CN)4][BF4]2 and [(eta6-C6H6)2RuCl 2]2 respectively. The structures of ligand L and its all three complexes have been determined by X-ray crystallography. In 1 and 3, ligand L forms with two organometallic species seven membered chelate rings whereas in 2 it ligates in a bis-pincer coordination mode. The geometry around Pd in 1 or 2 is close to square planar whereas in 3, Ru has pseudo-octahedral half sandwich “Piano-Stool” geometry. The Pd-Se bond distances are in the ranges 2.4004(9)-2.4627(14) A and follow the order 1 > 2, whereas Ru-Se bond lengths are between 2.4945(16) and 2.5157(17) A. The 1 and 2 have been found efficient catalysts for Heck reaction of aryl halides with styrene and methyl acrylate. The 2 is superior to 1. The TON and TOF values (per Pd) are up to ? 47500 and ?2639 h-1 respectively. The Royal Society of Chemistry 2010.

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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.COA of Formula: C12H12Cl4Ru2

Synthesis, molecular structure and evaluation of new organometallic ruthenium anticancer agents

A number of new ruthenium compounds have been synthesised, isolated and characterised, which exhibit excellent cytotoxicity against a number of different human tumour cell lines including a defined cisplatin resistant cell line and colon cancer cell lines. Addition of hydrophobic groups to the ruthenium molecules has a positive effect on the cytotoxicity values. Evidence is provided that, after incubation of a ruthenium compound with a 46 mer oligonucleotide duplex and subsequent nuclease treatment, ruthenium is bound to a guanine residue. The Royal Society of Chemistry 2009.

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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.

Synthesis, molecular, crystal and electronic structures of [(C 6H6)RuCl(HPz)2]Cl and [(C6H 6)RuCl2(Me2HPz)]

The reactions of the (C6H6)RuCl2] 2 complex with pyrazole and dimethylpyrazole have been examined. The ruthenium complexes, [(C6H6)RuCl(C3N 2H4)2]Cl and [(C6H 6)RuCl(C5N2H8)2], have been obtained and characterized by IR, UV-Vis and 1H NMR measurements. Crystal, molecular and electronic structures of the complexes have been determined. The geometries of the complexes were optimized with the DFT method and their UV-VIS spectra were calculated with the TDDFT method.

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

Application of 37366-09-9, Catalysts are substances that increase the reaction rate of a chemical reaction without being consumed in the process. 37366-09-9, Name is Dichloro(benzene)ruthenium(II) dimer, molecular formula is C12H12Cl4Ru2. In a Article£¬once mentioned of 37366-09-9

Synthesis of phosphonic acid derivatized bipyridine ligands and their ruthenium complexes

Water-stable, surface-bound chromophores, catalysts, and assemblies are an essential element in dye-sensitized photoelectrosynthesis cells for the generation of solar fuels by water splitting and CO2 reduction to CO, other oxygenates, or hydrocarbons. Phosphonic acid derivatives provide a basis for stable chemical binding on metal oxide surfaces. We report here the efficient synthesis of 4,4?-bis(diethylphosphonomethyl)-2,2?- bipyridine and 4,4?-bis(diethylphosphonate)-2,2?-bipyridine, as well as the mono-, bis-, and tris-substituted ruthenium complexes, [Ru(bpy) 2(Pbpy)]2+, [Ru(bpy)(Pbpy)2]2+, [Ru(Pbpy)3]2+, [Ru(bpy)2(CPbpy)]2+, [Ru(bpy)(CPbpy)2]2+, and [Ru(CPbpy)3] 2+ [bpy = 2,2?-bipyridine; Pbpy = 4,4?-bis(phosphonic acid)-2,2?-bipyridine; CPbpy = 4,4?-bis(methylphosphonic acid)-2,2?-bipyridine].

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Reference£º
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

Applications of transition metal complexes containing 3,3?- bis(diphenylphosphinoamine)-2,2?-bipyridine ligand to transfer hydrogenation of ketones

Hydrogen transfer reduction processes are attracting increasing interest from synthetic chemists in view of their operational simplicity. 3,3?-bis(diphenylphosphinoamine)-2,2?-bipyridine, (Ph 2PNH)2C10H6N2, was prepared through a single step reaction of 3,3?-diamino-2,2?- bipyridine with diphenylchlorophosphine. Reaction of (Ph2PNH) 2C10H6N2 with [Ru(eta6- benzene)(mu-Cl)Cl]2, [Rh(mu-Cl)(cod)]2 or [Ir(eta5-C5Me5)(mu-Cl)Cl]2 gave a range of new bridged dinuclear complexes [C10H6N 2{NHPPh2Ru(eta6-benzene)Cl2} 2], 1, [C10H6N2{PPh 2NHRh(cod)Cl}2], 2 and [C10H6N 2{NHPPh2Ir(eta5-C5Me 5)Cl2}2], 3, respectively. All new complexes have been fully characterized by analytical and spectroscopic methods. 1H31P-{1H} NMR, 1H13C HETCOR or 1H1H COSY correlation experiments were used to confirm the spectral assignments. 1, 2 and 3 are suitable catalyst precursors for the transfer hydrogenation of acetophenone derivatives. Notably [Ru((Ph 2PNH)2C10H6N2) (eta6-benzene)Cl2], 1 acts as an excellent catalyst, giving the corresponding alcohols in 98-99% yields in 10 min at 82 C (TOF ?600 h-1) for the transfer hydrogenation reaction in comparison to analogous rhodium or iridium complexes. This transfer hydrogenation is characterized by low reversibility under these conditions.

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Reference£º
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

Influence of Structural Variation on the Anticancer Activity of RAPTA-Type Complexes: ptn versus pta

A series of compounds of the general formula [M(eta6-arene) (ptn)Cl]X (M = Ru, Os; arene = p-cymene, benzene, toluene, hexamethylbenzene; ptn = 3,7-dimethyl-7-phospha-l,3,5-triazabicyclo[3.3.1]nonane; X = Cl -, BF4-) have been prepared and characterized spectroscopically. X-ray diffraction was additionally used to characterize four of the complexes in the solid state. The hydrolysis of the compounds was studied, and their cytotoxicity was evaluated in A2780 ovarian cancer cells and found to be comparable to that of known RAPTA complexes based on 7-phospha-l,3,5-triazatricyclo[3.3.1.1]decane (pta). The reactivity of the complexes toward double-stranded oligonucleotides and the model protein ubiquitin was investigated using Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR-MS) and gel electrophoresis, demonstrating a strong preference for the formation of covalent adducts with the protein. Correlations among compound structure, hydrolysis, biomolecular interactions, and cytotoxicity are established. 2009 American Chemical Society.

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

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Luminescent Cyclometalated Platinum Complexes with pi-Bonded Catecholate Organometallic Ligands

A series of cyclometalated platinum(II) complexes of the type [(ppy)Pt(LM)]n+ (n = 0, 1) with pi-bonded catecholates acting as organometallic ligands (LM) have been prepared and characterized by analytical techniques. In addition, the structures of two complexes of the series were determined by single-crystal X-ray diffraction. The packing shows the formation of a 1D supramolecular assembly generated by dPt-piCp* interactions among individual units. All complexes are luminescent in the solid state and in solution media. The results of photophysics have been rationalized by means of density functional theory (DFT) and time-dependent DFT investigations.

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Reference£º
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 Patent£¬once mentioned of 37366-09-9, SDS of cas: 37366-09-9

Macrocyclic ligands and their complexes for bifunctional molecular catalysis

Disclosed herein are embodiments of chiral and achiral macrocyclic polydentate ligands and methods of preparing the same. Disclosed herein are also embodiments of metal coordination complexes derived from these macrocyclic polydentate ligands and methods of preparing the same. The metal coordination complexes described herein, can be used for a variety of catalytic reactions, including hydrogenation and transfer hydrogenation of unsaturated organic compounds, dehydrogenation of alcohols and boranes, an asymmetric Michael-type addition reaction, or an aerobic oxidative kinetic resolution of an organic compound, dehydrogenative couplings and other catalytic transformations.

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

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Areneruthenium(II) 4-acyl-5-pyrazolonate derivatives: Coordination chemistry, redox properties, and reactivity

Areneruthenium(II) molecular complexes of the formula [Ru(arene)(Q)Cl], containing diverse 4-acyl-5-pyrazolonate ligands Q with arene = cymene or benzene, have been synthesized by the interaction of HQ and [Ru(arene)Cl-(mu- Cl)]2 dimers in methanol in the presence of sodium methoxide. The dinuclear compound [{Ru(cymene)Cl}2Q4Q] (H2Q4Q = bis(4-(1-phenyl-3-methyl-5-pyrazolone)dioxohexane), existing in the ARuSRu (meso form), has been prepared similarly. [Ru(cymene)(Q)Cl] reacts with sodium azide in acetone, affording [Ru(cymene)(Q)N3] derivatives, where Cl – has been replaced by N3-. The reactivity of [Ru(cymene)(Q)Cl] has also been explored toward monodentate donor ligands L (L = triphenylphosphine, 1-methylimidazole, or 1-methyl-2-mercaptoimidazole) and exo-bidentate ditopic donor ligands L-L (L-L = 4,4?-bipyridine or bis(diphenylphosphino)propane) in the presence of silver salts AgX (X = SO 3CF3 or ClO4), new ionic mononuclear complexes of the formula [Ru(cymene)(Q)L]X, and ionic dinuclear complexes of the formula [{Ru(cymene)(Q)}2L-L]X2 being obtained. The solid-state structures of a number of complexes were confirmed by X-ray crystallographic studies. Their redox properties have been investigated by cyclic voltammetry and controlled potential electrolysis, which, on the basis of their measured RuII/III reversible oxidation potentials, have allowed the ordering of the bidentate acylpyrazolonate ligands according to their electron-donor character and are indicative of a small dependence of the HOMO energy upon the change of the monodentate ligand. This is accounted for by DFT calculations, which show a relevant contribution of acylpyrazolonate ligand orbitals to the HOMOs, whereas that from the monodentate ligand is minor.

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Reference£º
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.category: ruthenium-catalysts

SYNTHESIS OF TRIPLE HALIDE-BRIDGED ARENE COMPLEXES OF RUTHENIUM(II) AND OSMIUM(II)

Reaction of <2> (M = Ru; X = Cl-, Br-, I-; M = Os, X = Cl-) with C5H5N in methanol, followed by addition of NH4PF6 gives the monocations PF6.Treatment of an equimolar mixture of these compounds and the corresponding with HBF4 in methanol then provides a high yield synthesis of the triple halide-bridged complexes BF4.Spectroscopic evidence for the formation of heterobridged, heteroarene and heteronuclear triple halide-bridged arene complexes of ruthenium(II) and osmium(II) using this synthetic route is also discussed.

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