Tag: M.W:700-800

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 molecular structures (1) and (2) have been determined.In 1, strain about the RuPCC chelate ring is accommodated largely by contraction of the intra-ring angles about the relevant atoms.In 2 there are similar contractions, together with marked lengthening of the Ru-C(sp2) bond (to 2.149(5) Angstroem) and of the C-C bond (1.534(7) Angstroem) from the vinyl alpha-carbon to the CHPPh2 group of the chelating tertiary phosphine; the latter bond is 0.11 Angstroem shorter than that in the iron analogue.Crystal data: 1 (as 0.5CH2Cl2 solvate): triclinic, space group P1-, a 8.409(2), b 19.055(5), c 21.921(9) Angstroem, alpha 94.10(3), beta 97.02(2), gamma 99.92(2) deg, U 3418.6 Angstroem3, Z=4; 2007 data (I>/=2.5?(I)) were refined to R=0.047, Rw=0.051; 2: triclinic, space group P1-, a 12.141(1), b 14.004(1), c 11.333(1) Angstroem, alpha 112.19(1), beta 101.15(1), gamma 69.01(1) deg, U 1662.0 Angstroem3, Z=2, 3788 data (I>/=2.5?(I)) were refined to R=0.047, Rw=0.050.

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

Electric Literature of 32993-05-8, Catalysts are substances that increase the reaction rate of a chemical reaction without being consumed in the process. 32993-05-8, Name is Chlorocyclopentadienylbis(triphenylphosphine)ruthenium(II), molecular formula is C41H35ClP2Ru. In a Article，once mentioned of 32993-05-8

A series of complexes containing the new tricyanovinylethynyl (3,4,4-tricyanobut-3-en-1-ynyl) ligand have been obtained by substitution of a CN group in tetracyanoethene upon reaction with the ethynyl complexes M(C?CH)(PP)Cp? (M = Ru, Os, (PP)Cp? = (PPh3) 2Cp; M = Ru, PP = dppe, Cp? = Cp, Cp*). The reactions proceed in higher yield as the metal environment becomes more sterically hindered, the normal [2 + 2]-cycloaddition/ring-opened product M{C[=C(CN) 2]CH=C(CN)2}(PP)Cp? also being formed in some cases. The diynyl complex Ru(C?CC?CH)(dppe)Cp* reacts with tcne to give only the ring-opened adduct Ru{C?CC[=C(CN)2]CH=C(CN) 2}(dppe)Cp*. Protonation (HBF4 or HPF6) of Ru{C?CC(CN)=C(CN)2}(dppe)Cp* afforded the vinylidene cation [Ru{=C=CHC(CN)=C(CN)2}(dppe)Cp*]+. A second transition-metal fragment MLn (MLn = Ru(PPh 3)2Cp, M?(dppe)Cp* (M? = Ru, Os), RuCl(dppe)2) can be added to the CN group trans to the metal center; electrochemical, spectroscopic, and computational studies indicate that there is little ground-state delocalization between the metal centers. In the case of the tricyanovinylethynyl derivatives, an intense MLCT (or ML-LCT) transition can be identified in the visible region, which is responsible for the intense blue to purple color of these species; the analogous transition in the vinylidene-based complexes is significantly blue-shifted. The X-ray crystallographically determined structures of several of these complexes are reported. The cations [{Cp*(dppe)Ru}{mu-(C/N)?CC(CN)=C(CN) (?C/N)}{M(dppe)Cp*}]+ (M = Ru, Os) show some C?C/C?N disorder (and associated Ru/Os disorder in the case of the heterometallic example) in the crystals.

The proportionality constant is the rate constant for the particular unimolecular reaction. the reaction rate is directly proportional to the concentration of the reactant. I hope my blog about 32993-05-8 is helpful to your research., Electric Literature of 32993-05-8

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

Electric Literature 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.

Complexes of the general formulae ClO4 and ClO4 (diamine=ethylendiamine (en), propylenediamine (pn), 2,2′-bipyridine (bipy), 1,10-phenanthroline (phen), biimidazole (H2bim), bibenzimidazole (H2bbzim) and 2-(2′-pyridylbenzimidazole) (Hpybzim); diolefin=2,5-norbornadiene (nbd), tetrafluorobenzobarrelene (tfb)) have been made by reaction of the complex RuCl(PPh3)2(eta-C5H5) with the diamine or diolefin in the presence of sodium perchlorate.A single-crystal X-ray diffraction study of ClO4 has been carried out.Crystals of the complex are monoclinic, space group P21/n, with a 18.0576(5), b 14.5070(3), c 10.3186(3) Angstroem; beta 103.20(6)o.The structure was solved by Patterson synthesis using 4209 observed reflections (2?(I) criterion) and refined to a R factor of 0.040.Reaction of RuCl(PPh3)2(eta-C5H5) with oxygen in the presence of sodium perchlorate leads to oxidation of the coordinated triphenylphosphine ligands giving the complex (eta-C5H5)>ClO4.In order to establish the structural identity of this compound a single-crystal X-ray diffraction study has been made.Crystals of this complex are monoclinic, space group P21/c, with a 10.8182(5), b 9.4480(3), c 21.0036(19) Angstroem; beta 90.246(6)o.The structure was solved by Patterson synthesis using 3819 observed reflections (3?(I) criterion) and refined to a R factor of 0.036.The ruthenium atom is coordinated in a sandwich fashion by the cyclopentadienyl group and a phenyl ring of the triphenylphosphine oxide ligand.The synthesis of new heteronuclear ruthenium(II)-rhodium(I) complexes of formulae <(eta-C5H5)(Ph3P)Ru(mu-bim)RhY2>x (x=2 or 1) and (eta-C5H5)(Ph3P)Ru(mu-bbzim)RhY2 (Y=CO, Y2=diolefin) is also described.

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

Synthetic Route of 92361-49-4, 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. 92361-49-4, C46H45ClP2Ru. A document type is Article, introducing its new discovery.

CpRu(PPh3)(PR3)Cl complexes, where PR 3 = PMe3, PPh3, or PTA (PTA = 1,3,5-triaza-7-phosphaadamantane), were used to catalyze the atom transfer radical addition of chlorinated esters (CCl3CO2Et, CH 2ClCO2Et) to styrene, and that of CCl4 to a variety of olefins. The monoadducts were obtained in moderate to excellent yields. Moreover, high selectivities were obtained for the addition of CCl 4 to internal olefins. The activity of CpRu(PTA)(PPh 3)Cl and CpRu(PTA)(PMe3)Cl were comparable to that of the highly efficient ATRA catalyst, CpRu(PPh 3)2Cl. The addition of CCl3CO2Et to styrene catalyzed by Cp?Ru(PPh3)(PR3)Cl (Cp? = Dp, Ind, Cp, Tp) are also reported here. Two new compounds, 3-chloro-3-phenyl-2-(trichloromethyl)-1-phenylpropan-1-one and 1,3,3,3-tetrachloro-1,2-diphenylpropane, resulting from the addition of CCl 4 to chalcone and cis-stilbene have been isolated and characterized by NMR spectroscopy and X-ray crystallography.

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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. 32993-05-8, Name is Chlorocyclopentadienylbis(triphenylphosphine)ruthenium(II), molecular formula is C41H35ClP2Ru. In a Article，once mentioned of 32993-05-8, Computed Properties of C41H35ClP2Ru

The first ruthenium-propargyl complexes CpL2RuCH2C<*>CPh (L = CO (1) and PPh3 (2)) were synthesized by reaction of – with PhC<*>CCH2Cl or PhC<*>CCH2OS(O)2C6H4Me-p and of Cp(PPh3)2RuCl with PhC<*>CCH2MgCl, respectively.In contrast, treatment of – with HC<*>CCH2Cl affords the ruthenium-eta1-allenyl complex Cp(CO)2RuCH=C=CH2 (3).Complex 1 is protonated by HBF4 * OEt2 to BF4 (4a), which isomerizes within 2 h in acetone solution at room temperature to BF4 (4b).Compound 4b reacts with Pt(PPh3)2(C2H4) to give the ruthenium-substituted platinum(II)-eta3-allyl complex <(eta3-CH2C(Ru(CO)2Cp)CHPh)Pt(PPh3)2>BF4 as the anti isomer quantitatively.Compound 1 undergoes facile <3 + 2> cycloaddition reactions with tetracyanoethylene (TCNE) and p-toluenesulfonyl isocyanate (TSI); the latter reaction in CH2Cl2 solution at 25 deg C proceeds slightly more rapidly (1.3 times) than the corresponding reaction of Cp(CO)2FeCH2C<*>CPh.With Co2(CO)8, 1 yields the trinuclear (CO)3Co(mu-eta2-PhC<*>CCH2Ru(CO)2Cp)Co(CO)3, which undergoes very slow cleavage of the Ru-CH2 bond with CF3CO2H, and replacement of CO (at Co) with PPh3.The foregoing reactions are compared and contrasted with the corresponding reactions of Cp(CO)2FeCH2<*>CPh.Where a comparison has been made, 2 was found to react faster than 1; however, its chemistry tends to be complicated by the lower stability of products and a facile PPh3-CO ligand exchange.With TSI and Co2(CO)8, the products are analogous of those of 1, but with Fe2(CO)9, Cp(CO)(PPh3)RuCH2C<*>CPh and Fe(CO)4PPh3 are obtained instead of heteronuclear metal complexes.

Sometimes chemists are able to propose two or more mechanisms that are consistent with the available data.Computed Properties of C41H35ClP2Ru, If a proposed mechanism predicts the wrong experimental rate law, however, the mechanism must be incorrect.Welcome to check out more blogs about 32993-05-8, in my other articles.

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

Electric Literature of 92361-49-4, 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.92361-49-4, Name is Chloro(pentamethylcyclopentadienyl)bis(triphenylphosphine)ruthenium(II), molecular formula is C46H45ClP2Ru. In a patent, introducing its new discovery.

An aldol-based build/couple/pair (B/C/P) strategy was applied to generate a collection of stereochemically and skeletally diverse small molecules. In the build phase, a series of asymmetric syn- and anti-aldol reactions were performed to produce four stereoisomers of a Boc-protected gamma-amino acid. In addition, both stereoisomers of O-PMB-protected alaninol were generated to provide a chiral amine coupling partner. In the couple step, eight stereoisomeric amides were synthesized by coupling the chiral acid and amine building blocks. The amides were subsequently reduced to generate the corresponding secondary amines. In the pair phase, three different reactions were employed to enable intramolecular ring-forming processes: nucleophilic aromatic substitution (SNAr), Huisgen [3+2] cycloaddition, and ring-closing metathesis (RCM). Despite some stereochemical dependencies, the ring-forming reactions were optimized to proceed with good to excellent yields, providing a variety of skeletons ranging in size from 8- to 14-membered rings. Scaffolds resulting from the RCM pairing reaction were diversified on the solid phase to yield a 14400-membered library of macrolactams. Screening of this library led to the discovery of a novel class of histone deacetylase inhibitors, which display mixed enzyme inhibition, and led to increased levels of acetylation in a primary mouse neuron culture. The development of stereo-structure/activity relationships was made possible by screening all 16 stereoisomers of the macrolactams produced through the aldol-based B/C/P strategy.

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

An intramolecular Diels-Alder (IMDA) reaction was observed at room temperature between an allyl group and a chloroanthracenyl group that were both bonded to the vinylidene ligand of the cationic ruthenium complex [Ru]=C=C(CH2CH=CH2)CH(CH2CH=CH 2)(C14H8Cl)+ (6; [Ru] = Cp(PPh 3)3Ru). The vinylidene ligand functions as a mediator to bring the allyl and the chloroanthracenyl groups in proximity for the reaction to take place. For the two allyl groups in 6, only the one at Cbeta underwent the reaction. In the analogous triethylphosphine complex 6 , more electron-donating triethylphosphine ligands lower the rate of the IMDA reaction. For this IMDA reaction in several vinylidene complexes, each with a nonchlorinated anthracenyl ligand, the rate of the reaction is accelerated by the presence of an unsaturated functional group at Cgamma of the vinylidene ligand, particularly by a terminal alkynyl substituent. The solid-state structures of two IMDA reaction products have been determined by single-crystal X-ray diffraction analysis.

Note that a catalyst decreases the activation energy for both the forward and the reverse reactions and hence accelerates both the forward and the reverse reactions.Formula: C41H35ClP2Ru, you can also check out more blogs about32993-05-8

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

Reactions of the group 4 metallocene alkyne complexes [Cp 2M(L)(btmsa)] (Cp = eta5-cyclopentadienyl = eta5-C5H5, btmsa = eta2-Me 3SiC2SiMe3; 1: M = Ti, L = none; 2: M = Zr, L = pyridine) and of the [(triphos)CoI] moiety [triphos = 1,1,1-tris(diphenylphosphanylmethyl)ethane] with the benzylsulfanyl-substituted acetylenes PhCH2S-C2-SCH2Ph (3) and PhCH 2S-C2-SFmoc (4) (Fmoc = fluorenylmethoxycarbonyl) have been investigated. Complex 1 reacted with 3 to give a mixture of a violet solid and [Cp2Ti(SCH2Ph)2] (5). Subsequently, the violet solid transformed in toluene at 70 C into the dinuclear complex [(Cp2Ti)2(mu-kappa2-kappa2- BnSC4SBn)] (6) displaying two [Cp2Ti] moieties bridged by a 1,4-bis(benzylsulfanyl)-1,3-butadiyne in the trans configuration. Complex 6 was further degraded in toluene at 100C to the tetranuclear cluster [CpTiS]4 (7). Similar reactivity was deduced indirectly for the reaction partners 1/4 and 2/3. For CoI, the side-on alkyne complexes [(triphos)Co(3)](PF6) (9-PF6) and [(triphos)Co(4)](PF 6) (10-PF6) were obtained. Reductive removal of the benzyl groups in 9-PF6 and subsequent coordination of the [Cp(PPh 3)RuII]+ moiety led to the dinuclear complex [(triphos)Co(mu-eta2-kappa2-C2S 2)RuCp(PPh3)] (13) displaying acetylene dithiolate (acdt2-) in a side-on carbon-sulfur chelate coordination mode. In contrast, the reaction of 10-PF6 with piperidine under very mild conditions resulted in the thio-alkyne complex [(triphos)Co(PhCH 2SC2S)] (11) bearing a terminal sulfur substituent at the coordinated alkyne. However, a subsequent rearrangement reaction led to the CoIII dithiolene complex [(triphos)Co{S2C 2(NC5H10)(CH2Ph)}](PF6) (14-PF6). The intricate rearrangement very likely involves a dinuclear Co species with a eta2-kappa2 coordination of the C2S2 moiety. Sulfur-substituted alkynes show contrasting behaviour in their reactions with TiII and Co I. Whereas the TiII centre in the titanocene eta2-alkyne complex effects a cleavage of the alkyne C sp-S bond concomitant with C-C coupling, CoI in the [Co(triphos)] eta2-alkyne complex leads to loss of the benzyl groups to give either a heterobimetallic Co/Ru acetylene dithiolate complex or a dithiolene complex.

Note that a catalyst decreases the activation energy for both the forward and the reverse reactions and hence accelerates both the forward and the reverse reactions.name: Chlorocyclopentadienylbis(triphenylphosphine)ruthenium(II), you can also check out more blogs about32993-05-8

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

The synthesis and coordination complexes of the new 1,2,3-triazole phosphinite Ph2POCH2CH2[1,2,3-N3C(Ph)C(H)] (2) are described. Compound 2 reacts with H2O2, S8, and Se8 to afford the chalcogenides Ph2P(=E)OCH2CH2[1,2,3-N3C(Ph)C(H)] [E = O (3), S (4), and Se (5)]. The reaction of 2 with [Ru(eta6-cymene)Cl2] yielded [Ru(eta6-cymene)Cl2(Ph2POCH2CH2{1,2,3-N3C(Ph)C(H)})] (6), which produced [Ru(eta6-cymene)(Ph2POCH2CH2{1,2,3-N3C(Ph)C(H)})]2[OTf]2 (7) on further treatment with silver triflate (AgOTf); in 7, 2 acts as a bidentate (P,N) ligand. The reaction of 2 with [CpRuCl(PPh3)2] (Cp = cyclopentadienyl) in 1:1 and 1:2 molar ratios afforded the mono- and disubstituted complexes [CpRuCl(PPh3)(Ph2POCH2CH2{1,2,3-N3C(Ph)C(H)})] (8) and [CpRuCl(Ph2P-OCH2CH2{1,2,3-N3C(Ph)C(H)})2] (9), respectively. Complex 9 reacted with silver triflate to yield the cationic complex [CpRu(Ph2POCH2CH2{1,2,3-N3C(Ph)C(H)})(Ph2POCH2CH2{1,2,3-N3C(Ph)C(H)})][OTf] (10), in which one of the phosphinite ligands shows P,N-chelation. The reactions of 2 with [M(COD)Cl2] (M = Pd, Pt; COD = 1,5-cyclooctadiene) in 2:1 ratios yielded cis-[MCl2(Ph2POCH2CH2{1,2,3-N3C(Ph)C(H)})2] [M = Pd (11) and Pt (12)]. The similar reaction of 2 with [PdCl(eta3-C3H5)]2 in a 2:1 ratio afforded [PdCl(eta3-C3H5)(Ph2POCH2CH2{1,2,3-N3C(Ph)C(H)})] (13). The reaction of 2 with [AuCl(SMe2)] in a 1:1 ratio yielded [Au(Cl)(Ph2POCH2CH2{1,2,3-N3C(Ph)C(H)})2] (14). The molecular structures of 6, 7, 9, 11, and 12 were determined by single-crystal X-ray studies.

Note that a catalyst decreases the activation energy for both the forward and the reverse reactions and hence accelerates both the forward and the reverse reactions.Quality Control of: Chlorocyclopentadienylbis(triphenylphosphine)ruthenium(II), you can also check out more blogs about32993-05-8

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.32993-05-8, Name is Chlorocyclopentadienylbis(triphenylphosphine)ruthenium(II), molecular formula is C41H35ClP2Ru. In a Article，once mentioned of 32993-05-8, Computed Properties of C41H35ClP2Ru

Cp(PPh3)2Ru-prim.alkyl complexes 2-6 and the eta1-alkenylruthenium compound 7 have been prepared by treatment of the corresponding chlororuthenium compound 1 with the appropriate organomagnesium halides.Magnesium compounds with sec.- or tert.-alkyl groups afford the hydrido-Ru-complex 8 via olefin elimination.At 80 deg C 3-5 eliminate one PPh3 and are converted into the hydridoolefin-complexes 9-11.Stable Cp(PPh3)Ru-eta1,eta2-4-alkenyl complexes 14 and 15 are obtained if beta-H-elimination is prevented by trans configuration of Ru and beta-H in a cyclopropyl system.

Note that a catalyst decreases the activation energy for both the forward and the reverse reactions and hence accelerates both the forward and the reverse reactions.Computed Properties of C41H35ClP2Ru, you can also check out more blogs about32993-05-8

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