Category: 14564-35-3

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The complex <(OC)4Re(OH2)2>+ reacts with oxalate and squarate to give the complexes <(OC)4Re(OH2)2>C2O4 (1) and <(OC)4Re(OH2)2>C4O4 (2).The reaction of (OC)2(PPh3)2Ru(FBF3)2 with potassium salts of alpha-aminoacids (glycine, L-alanine, L-phenylalanine) yields cationic ruthenium complexes with chelating aminoacidates (3-5).With acetylacetonate the complex <(OC)2(PPh3)2Ru(acac)> (16) is obtained.Nitriles and isonitriles give the complexes <(OC)4Re(N<*>C-R)2> (6: R=Me; 7: R=CH2CO2Et), <(OC)2(PPh3)2Ru(N<*>C-R)2>2 (8: R=Me, 9: R=p-C6H4OMe), <(OC)4Re(C<*>N-R)2> (10: R=(CH2)3Me; 11: R=CH2CO2Et) and <(OC)2(PPh3)2Ru(C<*>N-R)2>2 (12: R=CH2CO2Et; 13: R=C6H11), respectively.With thioethers (OC)4Re(OEt2)FBF3 forms the complexes <(OC)4Re(Ph-S-CH2-S-Ph)> (14) and <(OC)4Re(HO-(CH2)2-S-(CH2)2-S-(CH2)2OH)> (15). Key words: Ruthenium; Rhenium; Phosphorus; Tetrafluoroborate

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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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Alcohols are oxidized by N-methylmorpholine-N-oxide (NMO), Bu tOOH and H2O2 to the corresponding aldehydes or ketones in the presence of catalyst, [RuH(CO)(PPh3) 2(SRaaiNR)]PF6 (2) and [RuCl(CO)(PPh3)(S kappaRaaiNR)]PF6 (3) (SRaaiNR (1) = 1-alkyl-2-{(o- thioalkyl)phenylazo}imidazole, a bidentate N(imidazolyl) (N), N(azo) (N) chelator and SkappaRaaiNR is a tridentate N(imidazolyl) (N), N(azo) (N), Skappa-R is tridentate chelator; R and R are Me and Et). The single-crystal X-ray structures of [RuH(CO)(PPh3) 2(SMeaaiNMe)]PF6 (2a) (SMeaaiNMe = 1-methyl-2-{(o- thioethyl)phenylazo}imidazole) and [RuH(CO)(PPh3) 2(SEtaaiNEt)]PF6 (2b) (SEtaaiNEt = 1-ethyl-2-{(o- thioethyl)phenylazo}imidazole) show bidentate N,N chelation, while in [RuCl(CO)(PPh3)(SkappaEtaaiNEt)]PF6 (3b) the ligand SkappaEtaaiNEt serves as tridentate N,N,S chelator. The cyclic voltammogram shows RuIII/RuII (~1.1 V) and Ru IV/RuIII (~1.7 V) couples of the complexes 2 while Ru III/RuII (1.26 V) couple is observed only in 3 along with azo reductions in the potential window +2.0 to -2.0 V. DFT computation has been used to explain the spectra and redox properties of the complexes. In the oxidation reaction NMO acts as best oxidant and [RuCl(CO)(PPh 3)(SkappaRaaiNR)](PF6) (3) is the best catalyst. The formation of high-valent RuIV=O species as a catalytic intermediate is proposed for the oxidation process. Copyright

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

Related Products of 14564-35-3. Let’s face it, organic chemistry can seem difficult to learn. Especially from a beginner’s point of view. Like 14564-35-3, Name is Dichlorodicarbonylbis(triphenylphosphine)ruthenium(II). In a document type is Article, introducing its new discovery.

The tridentate ligand 2,6-diallylpyridine (DAP) has been used to synthesize novel complexes of iridium(I), ruthenium(II), palladium(II) and platinum(II) of formulae , , ClO4, , PdCl2(DAP)2>, .All the complexes have been characterized by elemental analysis.IR, and 1H NMR spectroscopy.The molecular structures of and have been determined by single-crystal X-ray diffraction studies.Crystals of the ruthenium complex are orthorhombic, space group Pbca, with Z=8 in a unit cell of dimensions a 11.492(5), b 18.942(3), c 23.083(9) Angstroem.Crystals of the palladium complex are triclinic, space group <*> with Z=1 in a unit cell of dimensions a 7.950(4), b 8.745(4), c 9.578(4) Angstroem, alpha 113.02(3), beta 90.75(3), gamma 116.65(3)o.Both structures were solved by Patterson and Fourier methods and refined by blocked full-matrix least-squares to R=0.0528 for 2742 observed reflections in the first complex and by full-matrix least-squares to R=0.0252 for 1948 observed reflections in the second.In the octahedral ruthenium complex, DAP acts as a tridentate ligand adopting a mer configuration and the phosphine ligand is trans to the pyridinic nitrogen, while in the trans square-planar palladium complex DAP acts as a monodentate N-donor ligand.

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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 full account of the catalysis of hydrosilylation of the C=C bond in olefins, their derivatives with functional groups as well as in vinyl-trisubstituted silanes by ruthenium(II) and ruthenium(III) phosphine precursors is given.The ruthenium complexes are far more efficient catalysts for the hydrosilylation of 1-alkenes and vinyl-substituted silanes than for the substituted olefins and unsaturated esters.General features characterizing all hydrosilylation reactions catalyzed by the above catalysts are as follows: the reaction proceeds with alkoxy-substituted silanes(also with vinylsilanes) in the absence of solvent, and is enhanced (for RuII and olefins occurs exclusively) in the presence of molecular oxygen.Two general mechanisms are proposed for hydrosilylation of olefins and of vinylsilanes, respectively, which account for most of the experimental observations.

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

Related Products of 14564-35-3. Let’s face it, organic chemistry can seem difficult to learn. Especially from a beginner’s point of view. Like 14564-35-3, Name is Dichlorodicarbonylbis(triphenylphosphine)ruthenium(II). In a document type is Article, introducing its new discovery.

Reaction of benzaldehyde semicarbazone (HL-R, where H is a dissociable proton and R is a substituent (R = OMe, Me, H, Cl, NO2) at the para position of the phenyl ring) with [Ru(PPh3)3Cl2] and [Ru(PPh3)2(CO)2Cl2] has afforded complexes of different types. When HL-NO2 and [Ru(PPh3)3Cl2] react in solution at ambient temperature, trans-[Ru(PPh3)2(L-NO2)Cl] is obtained. Its structure determination by X-ray crystallography shows that L-NO2 is coordinated as a tridentate C,N,O-donor ligand. When reaction between HL-NO2 and [Ru(PPh3)3Cl2] is carried out in refluxing ethanol, a more stable cis isomer of [Ru(PPh3)2(L-NO2)Cl] is obtained. The trans isomer can be converted to the cis isomer simply by providing appropriate thermal energy. Slow reaction of HL-R with [Ru- (PPh3)2(CO)2Cl2] in solution at ambient temperature yields 5-[Ru(PPh3)2(L-R)(CO)Cl] complexes. A structure determination of 5-[Ru(PPh3)2(L-NO2)(CO)Cl] shows that the semicarbazone ligand is coordinated as a bidentate N,O-donor, forming a five-membered chelate ring. When reaction between HL-R and [Ru(PPh3)2(CO)2Cl2] is carried out in refluxing ethanol, the 4-[Ru(PPh3)2(L-R)(CO)Cl] complexes are obtained. A structure determination of 4-[Ru(PPh3)2(L-NO2)(CO)Cl] shows that a semicarbazone ligand is bound to ruthenium as a bidentate N,O- donor, forming a four-membered chelate ring. All the complexes are diamagnetic (low-spin d6, S = 0). The trans- and cis-[Ru(PPh3)2(L-NO2)Cl] complexes undergo chemical transformation in solution. The 5- and 4-[Ru(PPh3)2(L-R)(CO)Cl] complexes show sharp NMR signals and intense MLCT transitions in the visible region. Cyclic voltammetry of the 5-[Ru(PPh3)2(L-R)(CO)Cl] and 4-[Ru(PPh3)2(L-R)(CO)Cl] complexes show the Ru-(II)-Ru(III) oxidation to be within 0.66-1.07 V. This oxidation potential is found to linearly correlate with the Hammett constant of the substituent R.

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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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Synthesis and characterization of two ruthenium(II) and osmium(II) complexes (1 and 2) having carbohydrate derived salen ligand and in situ ligand reduction are reported. The1,2-O-isopropylidene-3,5-diazido-3,5-dideoxy-alpha- d-xylopyranoside (L1) was reduced by catalytic hydrogenation using continuous flow hydrogen reactor in the presence of salicylaldehyde to form the corresponding bis-imino derivative H2L2. The ligand H2L2 has been transformed to H2L3 upon reduction of one of the imine bonds in consequence to the oxidation of the leaving PPh3 group to POPh3. Systematic spectroscopic characterization, 1H and 13C NMR, mass spectrometry, electronic spectra reveals the composition of the complexes. X-ray crystal structures of both the complexes are reported. Detailed electrochemical studies reveal the redox behaviour of the complexes and DFT calculations help to get the idea about the intense lowest-energy absorption for these two complexes.

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

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A haloalkylalkoxysilane is prepared by reacting an olefinic halide with an alkoxysilane in which the alkoxy group(s) contain at least two carbon atoms in the presence of a catalytically effective amount of ruthenium-containing catalyst. The process can be used to prepare, inter alia, chloropropyltriethoxysilane which is a key intermediate in the manufacture of silane coupling agents.

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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. 14564-35-3, Name is Dichlorodicarbonylbis(triphenylphosphine)ruthenium(II), molecular formula is C38H34Cl2O2P2Ru. In a Article£¬once mentioned of 14564-35-3, name: Dichlorodicarbonylbis(triphenylphosphine)ruthenium(II)

Substituted ketene elimination from acid chlorides induced by ruthenium(0) compounds

The compound Ru(CO)2(triphos) (triphos=MeC(CH2PPh2)3) reacts with a number of acid chlorides RR’CHCOCl to form Cl and the corresponding substituted ketenes RR’CCO.A quantitative study of the reaction of Ph2CHCOCl shows that Ph2CCO is formed in a 1:1 stoichiometry.The compound Ru(CO)3(PPh3)2 also reacts with Ph2CHCOCl forming Ph2CCO and the unstable hydride Cl, the chemistry of which is also reported.

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

Reference of 14564-35-3. Chemistry is an experimental science, and the best way to enjoy it and learn about it is performing experiments.Introducing a new discovery about 14564-35-3, Name is Dichlorodicarbonylbis(triphenylphosphine)ruthenium(II)

Monomeric and dimeric ruthenium-TCNQ complexes containing phosphine ligands (TCNQ= 7,7,8,8-tetracyanoquinodimethane)

Treatment of [Ru(CO)2(PPh3)2(THF)2](BF 4)2, with LiTCNQ (TCNQ = 7,7,8,8-tetracyanoquinodimethane) in dichloromethane at reflux resulted in the formation of [Ru(CO)2(PPh3)2(TCNQ)]BF4 (1). The synthesis of the carbonylhydride compound [RuH(CO)(PPh3)2(TCNQ)]2 (2) was carried out by reaction of RuHCl(CO)(PPh3)3 and TCNQ or from [RuH(CO)(PPh3)2(CH3CN)2]PF 6 and LiTCNQ. The preparation of compounds with diphosphines [Ru(dppe)2(TCNQ)]2TCNQ(ClO4) (3) and [Ru(dppm)3 TCNQ]ClO4 (4) is also described. In all cases substitution reactions of labile ligands occurred with formation of compounds with sigma-coordinated TCNQ. From IR, UV-vis, 1H and 31P NMR spectroscopy and FAB mass spectrometric determinations, monomeric and dimeric compounds are proposed.

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

Reference of 14564-35-3, An article , which mentions 14564-35-3, molecular formula is C38H34Cl2O2P2Ru. The compound – Dichlorodicarbonylbis(triphenylphosphine)ruthenium(II) played an important role in people’s production and life.

Bis(alkynyl), metallacyclopentadiene, and diphenylbutadiyne complexes of ruthenium

Heating diphenylbutadiyne with [Ru(CO)2(PPh3) 3] or [Ru(CO)3(PPh3)2] in toluene under reflux provides respectively the ruthenacyclopentadiene [Ru{kappa2-CR=CPhCPh=CR}(CO)2(PPh3) 2] (R = C?CPh) or the cyclopentadienone complex [Ru{eta4-O=CC4Ph2R2}(CO) 2(PPh3)], the latter via [2 + 2 + 1] alkyne and CO cyclization. The bis(alkynyl) complex cis,cis,trans-[Ru(C?CPh) 2(CO)2(PPh3)2] is not formed in either of these reactions but is the product of the reaction of [RuCl 2(CO)2(PPh3)2] with LiC?CPh or of cis,-mer-[Ru(C?CPh)2(CO)(PPh3)3] with CO. Although the bis(alkynyl) complex does not undergo reductive elimination to provide the diyne complex, thermolysis of cis,cis,trans-[Ru(C?CPh) (HgC?CPh)(CO)2-(PPh3)2] (obtained from [Ru(CO)2(PPh3)3] and [Hg(C?CPh) 2]) provides a noninterconvertible 1:1 mixture of cis,cis,trans-[Ru(C?CPh)2(CO)2(PPh3) 2] and [Ru(eta-PhC?CC?CPh)(CO)2(PPh 3)2].

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