Tag: M.W:700-800

Synthetic Route 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.

A new method to convert terminal alkynes under relatively mild conditions to 1-cyanoalkynes using in situ formed cyanogen is described. 1-Cyanoalkynes have a higher reactivity than terminal alkynes in the ruthenium(II)-catalyzed regiospecific azide-alkyne cycloaddition to afford 4-cyano-1,2,3-triazoles. A mechanistic proposal different from the one that terminal alkynes adopt under the same reaction conditions is proposed. This work provides a new and convenient two-step sequence to prepare 4-cyano-1,2,3-triazoles from terminal alkynes and organic azides.

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

Electric Literature 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.

Thermolysis of [CpRuCl(PPh3)2] and NaS 2CNPr2 or NaS2CNMeBu in methanol affords the ruthenium(II) dithiocarbamate complexes, [CpRu(PPh3)(S 2CNPr2)] and [CpRu(PPh3)(S2CNMeBu)], which have been crystallographically characterized. A similar treatment of two equivalents of [CpRuCl(PPh3)2] with the bis(dithiocarbamate) ligand derived from 1,3-homopiperazine affords [{CpRu(PPh3)}2(mu-S2CNC5H 10NCS2)].

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

Synthetic Route of 32993-05-8. 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)

Reaction of the readily available metal acetylide complexes Ru(CCC 6H4R-4)(PPh3)2Cp (R = OMe, Me, H, CN, CO2Me), Ru(CCFc)(PPh3)2Cp and Fe(CCC 6H4R-4)(dppe)Cp (R = Me, H) with 1-cyano-4- dimethylaminopyridinium tetrafluoroborate affords cyanovinylidene complexes [Ru{CC(CN)C6H4R-4}(PPh3)2Cp]BF 4, [Ru{CC(CN)Fc}(PPh3)2Cp]BF4 and [Fe{CC(CN)C6H4R-4}(dppe)Cp]BF4 in an experimentally simple fashion. These synthetic studies are augmented by refinements to the preparation of the key iron reagents FeCl(dppe)Cp and Fe(CCC6H4R-4)(dppe)Cp. Molecular structure determinations, electrochemical measurements, representative IR spectroelectrochemical studies and DFT studies have been used to provide insight into the electronic structure of the cyanovinylidene ligand, and demonstrate that despite the presence of the cyano-substituted methylidene fragment, reduction takes place on the vinylidene Calpha carbon.

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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 92361-49-4, Name is Chloro(pentamethylcyclopentadienyl)bis(triphenylphosphine)ruthenium(II),molecular formula is C46H45ClP2Ru, is a conventional compound. this article was the specific content is as follows.Application In Synthesis of Chloro(pentamethylcyclopentadienyl)bis(triphenylphosphine)ruthenium(II)

Trichlorostannyl complexes [Ru(SnCl3) (Cp?)L] (2a-c) were prepared by treatment of optically active half-sandwich chlorocomplexes [RuCl(Cp?)L] (1a-c) with an excess of SnCl2.2H2O in ethanol. Treatment of trichlorostannyl complexes 2a-c with NaBH4 afforded trihydridostannyl derivatives [Ru(SnH3) (Cp?)L] (3a-c) in moderated yields. Treatment of 2a-c with MgBrMe gave the trimethylstannyl complexes Ru(SnMe3) (Cp?)L (4a-c). Alkynylstannyl derivatives [Ru{Sn(C?CPh)3}(Cp?)L] (5a-c) were prepared by treatment of trichlorostannyl compounds 2a-c with an excess of LiC?CPh in thf. All the complexes present optical activity. The complexes were characterized spectroscopically and by X-ray crystal structure determination of [RuCl(eta5-C5Me5)L] (1b), [Ru(SnCl3) (eta5-C5Me5)L] (2b), and [Ru(SnCl3) (eta5-C9H7)L] (2c). The influence of different ligands on the Ru?P interaction in several complexes 1a-c, 2a-c and 3a-c was evaluated by DFT calculations. These calculations indicate that [SnCl3]- has a stronger stabilization effect than [Cl]- and the same occurs between ?C9H7 and ?C5Me5. These relative stabilities combined with the distortion energies of the fragments produce a stabilizing effect in the Ru?P bonds of complex 2c that is twice as strong as in the 1b complex.

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Reference：
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.

Several new compounds of the type (1+) X(1-), where X = Cl, Br, I, I3, BPh4, p-toluenesulphonate, d(+)-campho-10-sulphonate, have been obtained in the form of ion pairs or salts.The above compounds form during oxidative addition by HX acids to CpOsH(PPh3)2.The reactions are complete after several seconds, with a quantitative yield.This is in contrast to the behaviour of CpRuH(PPh3)2, where covalent CpRuX(PPh3)2 forms.Reaction of CpOsH(PPh3)2 with DCl acid (excess) gives Cl, but no Cl is formed.Refluxing CpOsBr(PPh3)2, in ethylene glycol for instance, gives a (1+) cation as a result of the dehydrogenation of the glycol.Compounds of the type, X, in solutions of polar solvents (MeOH) or halogenated hydrocarbons (e.g.CH2X2) undergo transformation to CpOsX(PPh3)2 during the reductive elimination process.In this way novel CpOsI(PPh3)2 has been obtained.In the case of the reaction of a mixture of HX + X2 with CpOsH(PPh3)2, Br3 (for Br2) and I3 (for I2) have been obtained in the form of sparingly soluble ion pars with yields of about 90percent.

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

Synthetic Route 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.

A series of p-cymene and cyclopentadienyl Ru(II)-aNHC complexes were synthesized from 2-methylimidazolium salts with either an N-bound alkenyl (1, 3) or picolyl tether (6, 7). The C(5)-Me substituted alkenyl-tethered analogues (2, 4) were also synthesized. Ag-mediated C(2)-dealkylation was a prominent side reaction that led to the formation of normally bound NHC Ru(II) complexes, which in selected cases were isolated (5, 8). A C(4)- over C(2)-selectivity for ruthenium binding was established by protecting the C(2)-position with an iPr group on the imidazolium precursor, for which unique p-cymene (9) and cyclopentadienyl (10) Ru(II)-aNHC derivatives were synthesized. All complexes were applied in the transfer hydrogenation of ketones and in secondary alcohol oxidation, with higher catalytic activity for the p-cymene over the cyclopentadienyl systems, as well as the alkenyl- over the picolyl-containing aNHC complexes.

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

Electric Literature of 32993-05-8. Let’s face it, organic chemistry can seem difficult to learn. Especially from a beginner’s point of view. Like 32993-05-8, Name is Chlorocyclopentadienylbis(triphenylphosphine)ruthenium(II). In a document type is Article, introducing its new discovery.

Cyclopentadienyl-bis(triphenylphosphine) carboxylatoruthenium(II) compounds, Ru(eta-C5H5)(PPh3)2(O2CR) have been prepared by reacting Ru(eta-C5H5)(PPh3)2Cl and AgO2CR in benzene.The 18-electron compounds are moderately stable and contain a unidentate carboxylato ligand.Cyclic voltammetry of these compounds shows the presence of a one-electron ruthenium(II)/ruthenium(III) couple near 0.6 V (vs SCE) in CH2Cl2.The half-wave potentials follow the Hammett linear free energy relationship when plotted against the ?-values of the substituents.

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Reference：
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, Application In Synthesis of Chlorocyclopentadienylbis(triphenylphosphine)ruthenium(II)

A family of [CpRu(PP)(MeCN)]PF6 complexes (2 a?e and 4) were prepared in which the bis-phosphine ligand contains a pendent tertiary amine in the second-coordination sphere. 2 a?e contain PPh2NR?2 ligands with two amine groups as the pendent base. Complex 4 has the PPh2NPh1 ligand with only one pendent amine. The catalytic performance of 2 a?e and 4 were assessed in the cyclization of 2-ethynyl aniline and 2-ethynylbenzyl alcohol. It was revealed that the positioning of the pendent amine near the metal active site is essential for high catalyst performance. A comparison of PPh2NR?2 catalysts (2 a?e) showed minimal difference in performance as a function of pendent amine basicity. Rather, only a threshold basicity ? in which the pendent amine was more basic than the substrate ? was required for high performance.

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 Chlorocyclopentadienylbis(triphenylphosphine)ruthenium(II). In my other articles, you can also check out more blogs about 32993-05-8

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

Synthetic Route 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.

The conversion of CpRuCl(PPh3)2 in boiling ethylene glycol within 90 h of reflux has been investigated.New complex cations in the form of their tetraphenylborates, for which the formulae + and + are proposed, were isolated.The former cation is also formed at lower temperatures during the reflux of CpRuCl(PPh3)2 in methanol.The following process takes place: 2CpRuCl(PPh3)2 -> + + Cl- + 2PPh3.In the presence of dicyclopentadiene during the reflux of CpRuCl(PPh3)2 in high boiling polar solvents (ethylene glycol, dimethyl sulphoxide), ruthenocene is formed in a 90 percent yield.One of the cyclopentadienyl groups in ruthenocene originates from dicyclopentadiene.As a result of the reaction of CpRuCl(PPh3)2 and NaBPh4 in a mixture of diglyme and methanol, a colourless, crystalline compound, CpRu(eta-C6H5)BPh3, is obtained in a 50-60 percent yield.

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

Electric Literature of 32993-05-8. 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)

The dinuclear dicationic vinylidene complex {[Ru]=C-C(Ph)CH 2C(CH2CN)=C=[Ru]}2+ (7a, [Ru] = Cp(PEt 3)2Ru) is prepared from the reaction of ICH2CN with {[Ru]=C=C(Ph)CH2C?C[Ru]}+ (6a). Deprotonation of 7a by n-Bu4NOH is followed by a cyclization process yielding the stable complex 9a, containing a five-membered carbocyclic ring ligand, which is fully characterized by 2D-NMR analysis and a single-crystal X-ray diffraction analysis. Similarly deprotonation of {[Ru]=C=C(Ph)CH2C(CH 2-COOEt)=C=[Ru]}2+ (8a) gave the stable product lia containing a bridging ligand also with a similar five-membered carbocyclic ring. The cyclization process is affected by an ancillary ligand on the Ru metal center. Thus the analogous dinuclear complex 9b, with a bistriphenylphosphine ligand on one metal, which is prepared in a similar manner from {[Ru]=C=C(Ph)CH2C(CH2CN)=C=[Ru?]}2+ (7b, [Ru?] = Cp(PPh3)2Ru), is unstable, undergoing isomerization to give the dinuclear complex 10b, containing a cyclopropenyl ligand.

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