Category: 32993-05-8

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Coordinating Tectons. Experimental and Computational Infrared Data as Tools to Identify Conformational Isomers and Explore Electronic Structures of 4-Ethynyl-2,2?-bipyridine Complexes

4-Ethynyl-2,2?-bipyridyl-substituted ruthenium alkynyl complexes have been prepared and used to access a range of binuclear homometallic ruthenium and heterometallic ruthenium-rhenium complexes. These have been characterized by a variety of spectroscopic and single-crystal X-ray diffraction experiments. The IR spectra of a number of these ruthenium alkynyls display multiple nu(C?C) bands in the IR spectra, which are rationalized in terms of putative conformational isomers, whose calculated infrared stretching frequencies are comparable to those obtained experimentally. The mononuclear alkynyl ruthenium complexes undergo reversible one-electron oxidations centered largely on the alkynyl ligands, as inferred from the significant shift in nu(C?C) frequency on oxidation, while the binuclear complex [Ru{C?C-4-bpy-kappa2-N,N?-RuClCp}(dppe)Cp?]+ undergoes initial oxidation at the very electron rich {RuCl(bpy)Cp} fragment, causing only a small change in nu(C?C). A combination of IR and UV-vis spectroelectrochemical experiments, supported by quantum chemical calculations on a selected range of conformers, led to the classification of [Ru{C?C-4-bpy-kappa2-N,N?-RuClCp}(dppe)Cp?]+ as a weakly coupled class II mixed-valence compound (Hab = 306 cm-1). These results indicate that there is improved electronic communication through the 4-ethynyl-2,2?-bipyridyl ligand in comparison to the analogous 5-ethynyl-2,2?-bipyridyl complexes (Hab = 17 cm-1).

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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 32993-05-8, Name is Chlorocyclopentadienylbis(triphenylphosphine)ruthenium(II), Quality Control of: Chlorocyclopentadienylbis(triphenylphosphine)ruthenium(II).

Preparation and characterization of novel poly(alkylidenamine) nitrile ruthenium metallodendrimers

Complete functionalization of N,N,N?,N?-[tetrakis(cyanoethyl)- hexamethylenediamine] [N=C(CH2)2]2N(CH 2)6N[(CH2)2-C=N]2 (4) and N,N,N’,N’-[tetrakis(cyanoethoxypropyl)hexamethylenediamine] [N=C(CH 2)2O(CH2)3]2N(CH 2)6N[(CH2)3-O(CH2) 2C=N]2 (7) with the organometallic moiety [Ru(eta5-C5H5)(PPh3) 2Cl] and the five-coordinate cis-[RuCl(dppe)2]-[PF 6] [dppe = 1,2-bis(diphenylphosphanyl)ethane] was attained, with good yield, respectively, by treating the metallofragment with the core in methanol (at room temperature and in presence of T1PF6 as a chloride abstractor) and in 1,2-dichloroethane (under reflux). These novel nitrile-functionalized poly(alkylidenamine) dendrimers peripherally functionalized with the ruthenium moieties [Ru(eta5-C 5H5)(PPh3)2]+ and [RuCl(dppe)2]+ (8-11) were fully characterized by NMR (1H, 13C, 31P), TOF-MS and FTIR. The present results represent a step forward in the knowledge of the most adequate synthetic strategy for total coordination of poly(alkylidenamine) nitrile core derivatives to the different ruthenium complex moieties and confirm the versatility of these systems as building blocks in metallodendrimer chemistry.

Balanced chemical reaction does not necessarily reveal either the individual elementary reactions by which a reaction occurs or its rate law.Quality Control of: Chlorocyclopentadienylbis(triphenylphosphine)ruthenium(II). In my other articles, you can also check out more blogs about 32993-05-8

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

32993-05-8, Name is Chlorocyclopentadienylbis(triphenylphosphine)ruthenium(II), molecular formula is C41H35ClP2Ru, belongs to ruthenium-catalysts compound, is a common compound. In a patnet, once mentioned the new application about 32993-05-8, name: Chlorocyclopentadienylbis(triphenylphosphine)ruthenium(II)

TRANSITION METAL MEDIATED OXIDATION OF HETERO ATOMS IN ORGANIC MOLECULES COORDINATED TO TRANSITION METALS

The present invention is directed to a process for the catalytic oxidation of the thioether 5-methoxy-2-((4-methoxy-3,5-dimethyl-2-pyridinyl)methyl) methylthio)-l H- benzimidazole to its sulfoxide: 5-methoxy-2-((4-methoxy-3,5-dimethyl-2-pyridinyl) methyl) methylsulfinyl)-1H-benzimidazole comprising: reacting the thioether with: 1) a transition metal catalyst; and, 2) an oxygen source; wherein the thioether is oxidized to a sulfoxide and wherein one of either the R and S enantiomers is formed to an enantiomeric excess.

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

Related Products of 32993-05-8, An article , which mentions 32993-05-8, molecular formula is C41H35ClP2Ru. The compound – Chlorocyclopentadienylbis(triphenylphosphine)ruthenium(II) played an important role in people’s production and life.

Ruthenium complexes of hexakis(cyanophenyl)[3]radialenes and their di(cyanophenyl)methane precursors: Synthesis, photophysical, and electrochemical properties

The coordination chemistry of cross-conjugated ligands and the effect of cross-conjugation on the nature of metal-metal and metal-ligand interactions have received limited attention. To explore the effects of cross-conjugation eight ruthenium complexes were synthesized, mononuclear complexes of two isomeric cross-conjugated [3]radialenes [RuCp(PPh3) 2(L)]PF6 and [{RuCp*(dppe)}(L)]PF6 (L = hexakis(4-cyanophenyl)[3]radialene, 2; hexakis(3-cyanophenyl)[3]radialene, 3), and dinuclear complexes [{RuCp(PPh3)2}2(L)] (PF6)2 and [{RuCp*(dppe)}2(L)](PF 6)2 of the diarylmethane precursors (L = 4,4?-dicyanodiphenylmethane, 4; 3,3?-dicyanodiphenylmethane, 5) to the [3]radialenes. Considerable synthetic challenges allowed only clean isolation of mononuclear complexes of the multidentate radialenes 2 and 3. As expected, coordinating a positively charged metal induces a red shift for the pi-pi* transition in complexes of ligand 2, but unexpectedly a blue shift for the same transition in complexes of 3 was observed. This points to conformational differences for the [3]radialene in the ruthenium complexes of the para-(2) versus meta-(3) substituted hexaaryl[3]radialenes. Cyclic voltammetry indicates that the methylene spacer in 4 and 5 does not enable any interaction between metal centers and the absorption behavior is essentially as observed for [Ru(NCPh)(PPh3)2Cp]PF6 and [Ru(NCPh)(dppe)Cp*]PF6 but generally with a slight red shift in absorbance maxima.

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

Reference of 32993-05-8, 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. 32993-05-8, C41H35ClP2Ru. A document type is Article, introducing its new discovery.

Pentakis(methoxycarbonyl)cyclopentadiene Chemistry. Part 7. Preparation and Characterisation of Some Ruthenium Complexes: Crystal and Molecular Structure of eta-Cyclopentadienylruthenium, >

The salt Tl reacts with in acetonitrile to give the complex ; in air the reaction affords >.The crystal structure of the latter has been determined by single-crystal X-ray diffraction methods at 295 K, being refined to a residual of 0.026 for 6 438 ‘observed’ reflections.Crystals are triclinic, space group P1, with a=15.790(5), b=8.968(4), c=7.947(3) Angstroem, alpha=67.52(3), beta=89.52(3), gamma=80.90(3) deg, and Z=2.Both ligands have an eta5 relationship to the ruthenium in what is essentially an eclipsed sandwich compound.For the C5H5 ring, Ru-C is 2.178(2)-2.186(3) Angstroem, while for the C5(CO2Me)5 ligand, Ru-C is 2.157(2)-2.178(2) Angstroem; although these distances are uncorrected for libration, their relativity seems valid.The C5(CO2Me)5 ligand is displaced in reactions with tertiary phosphines in nitrile solvents, and this reaction forms the basis of a process for the oxidation of PPh3 catalysed by the metallocene.The protonation of by HC5(CO2Me)5 is also described.

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

32993-05-8, Name is Chlorocyclopentadienylbis(triphenylphosphine)ruthenium(II), molecular formula is C41H35ClP2Ru, belongs to ruthenium-catalysts compound, is a common compound. In a patnet, once mentioned the new application about 32993-05-8, Quality Control of: Chlorocyclopentadienylbis(triphenylphosphine)ruthenium(II)

Syntheses and characterization of nickel(II) and ruthenium(II) complexes with the novel phosphine ligands 1-((diphenylphosphino)methyl)-1-phenyl-1-silacyclopent-3-ene and 1,1-bis((diphenylphosphino)methyl)-1-silacyclopent-3-ene. Crystal structure of CpRuCl[(PPh2CH2)2(SiC4H 6)]

The reaction of the lithium salt of chlorodiphenylphosphine with 1-chloro-1-phenylsila-cyclopent-3-ene (1) and 1,1-dichlorosilacyclopent-3-ene (2) gave good yields of 1-((diphenylphosphino)methyl)-1-phenyl-1-silacyclopent-3-ene (L) (3) and 1,1-bis((diphenylphosphino)-methyl)-1-silacyclopent-3-ene (L?) (4). Both molecules were obtained as white solids characterized by NMR. Red and red-violet diamagnetic square-planar complexes trans-NiCl2L2 and cis-NiC2L? were obtained by reacting NiCl2¡¤6H2O with 3 and 4, respectively. Substitution of two PPh3 in CpRuCl(PPh3)2 by 4 gave CpRuCl(L?) (7) in good yield. Orange crystals of 7 contain monomeric pseudooctahedral ruthenium(II) centers surrounded by a Cl atom, a Cp ligand, and the two phosphorus atoms of the 1,1-bis((diphenylphosphino)methyl)-1-silacyclopent-3-ene ligand. The silacyclopentene ring adopts a puckered ground state configuration with a puckering angle of 10. 7 can be described as a spirannic compound with roughly perpendicular Ru-P(1)-C(10)-Si-C(20)-P(2) and Si-C(6)-C(7)-C(8)-C(9) rings.

Balanced chemical reaction does not necessarily reveal either the individual elementary reactions by which a reaction occurs or its rate law.Quality Control of: Chlorocyclopentadienylbis(triphenylphosphine)ruthenium(II). In my other articles, you can also check out more blogs about 32993-05-8

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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.32993-05-8, Name is Chlorocyclopentadienylbis(triphenylphosphine)ruthenium(II), molecular formula is C41H35ClP2Ru. In a Article£¬once mentioned of 32993-05-8, category: ruthenium-catalysts

Molecular hybridization as a powerful tool towards multitarget quinoidal systems: Synthesis, trypanocidal and antitumor activities of naphthoquinone-based 5-iodo-1,4-disubstituted-, 1,4- and 1,5-disubstituted-1,2,3-triazoles

Quinonoid compounds based on 5-iodo-1,4-disubstituted-, 1,4- and 1,5-disubstituted-1,2,3-triazoles were synthesized using simple methodologies and evaluated against T. cruzi, the etiological agent of Chagas disease, and cancer cell lines PC3, HCT-116, HL-60, MDA-MB-435 and SF-295. The cytotoxic potential of the lapachones was also assayed against peripheral blood mononuclear cells (PBMC). Two compounds 6 and 12 were identified as potential hits against T. cruzi. beta-Lapachone-based 1,5-disubstituted-1,2,3-triazole (12) displayed an IC50/24 h = 125.1 muM, similar to benznidazole, the standard drug. Compound 12 was also more active than the precursor beta-lapachone against the cancer cell lines. These compounds acting as multitarget quinoidal systems could provide promising new leads for the development of trypanocidal and/or anticancer drugs.

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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 32993-05-8, Name is Chlorocyclopentadienylbis(triphenylphosphine)ruthenium(II),molecular formula is C41H35ClP2Ru, is a conventional compound. this article was the specific content is as follows.Recommanded Product: Chlorocyclopentadienylbis(triphenylphosphine)ruthenium(II)

Cyclopentadienyl Ruthenium(II) Complex-Mediated Oxidation of Benzylic and Allylic Alcohols to Corresponding Aldehydes

This work reports an efficient method for the oxidation reaction of aliphatic, aromatic allylic, and benzylic alcohols into aldehydes catalyzed by the cyclopentadienyl ruthenium(II) complex (RuCpCl(PPh3)2) with bubbled O2. Through further optimizing controlled studies, the tendency order of oxidation reactivity was determined as follows: benzylic alcohols > aromatic allylic alcohols >> aliphatic alcohols. In addition, this method has several advantages, including a small amount of catalyst (0.5 mol%) and selective application of high discrimination activity of aliphatic, aromatic allylic, and benzylic alcohols.

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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 32993-05-8, Name is Chlorocyclopentadienylbis(triphenylphosphine)ruthenium(II),molecular formula is C41H35ClP2Ru, is a conventional compound. this article was the specific content is as follows.Computed Properties of C41H35ClP2Ru

Acetylcholine-like and trimethylglycine-like PTA (1,3,5-Triaza-7- phosphaadamantane) derivatives for the development of innovative Ru- and Pt-based therapeutic agents

The PTA N-alkyl derivatives (PTAC2H4OCOMe)X (1X: 1a, X = Br; 1b, X = I; 1c, X = PF6; 1d, X = BPh4), (PTACH 2COOEt)X (2X: 2a, X = Br; 2b, X = Cl; 2c, X = PF6), and (PTACH2CH2COOEt)X (3X: 3a, X = Br; 3c, X = PF 6), presenting all the functional groups of the natural cationic compounds acetylcholine or trimethylglycine combined with a P-donor site suitable for metal ion coordination, were prepared and characterized by NMR, ESI-MS, and elemental analysis. The X-ray crystal structures of 1d and 2c were determined. Ligands 1c, 2b, and 3c were coordinated to Pt(II) and Ru(II) to give the cationic complexes cis-[PtCl2(L)2]X2 and [RuCpCl(PPh3)(L)]X (L = 1, 2, 3, X = Cl or PF6) designed with a structure targeted for anticancer activity. The X-ray crystal structure of [CpRu(PPh3)(PTAC2H4OCOMe)Cl]PF6 (1cRu) was determined. The antiproliferative activity of the ligands and the complexes was evaluated on three human cancer cell lines.

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

Synthetic Route of 32993-05-8, 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.32993-05-8, Name is Chlorocyclopentadienylbis(triphenylphosphine)ruthenium(II), molecular formula is C41H35ClP2Ru. In a patent, introducing its new discovery.

Intramolecular cyclization of arylalkynes with C-O bond formation on ruthenium complexes

Cyclization of terminal arylalkynes containing aldehyde (1a), ketone (1b-c) or hydroxyl (6a-c) functionality on the aryl ring induced by ruthenium complex is investigated. For the reaction of Cp(PPh3)2RuCl with o-ethynyl benzaldehyde 1a, a vinylidene intermediate was formed which is followed by a carbonyl attack to give 2a. However, for 1b-c, with a ketone replacing the aldehyde group, isobenzofuryl carbene complexes (4b-c) were formed as the major products along with the isochromene carbene complexes (2b-c) as the minor products. For three o-enynyl phenol compounds 6a-c with different substituents on the aryl ring, the reactions take place at the triple bond first giving vinylidene intermediates which undergo facile intramolecular cyclization to yield the cyclic oxocarbene complexes 7a-c in excellent yields. Modification of various substituents at Cbeta of the carbene ligand of 7 by the use of different alkyl halides can be readily achieved under mild condition. For the chromane ring derivatives 11, the two allyl groups underwent ring closing metathesis reaction in the presence of Grubb’s catalyst and yielded the tricyclic product 12. These chemical reactions and their mechanisms are corroborated by structure determinations of two ruthenium complexes using single crystal X-ray diffraction analysis.

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