Category: 32993-05-8

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)

The Cp(PPh3)2Ru-nCR=CH2 complexes 2 – 4 (n = 0, 2, R = H; n = 3, R = CH3) are prepared by treatment of the chloride 1 with the appropriate organomagnesium halides.The vinyl complex 2 eliminates a PPh3 ligand above 100 deg C and reacts with ethylene (20 – 30 bar) by insertion into the Ru – vinyl bond to give the (eta3-1-methylallyl)ruthenium complex 6a.The 3- and 4-alkenyl compounds 3 and 4 isomerize at 80 – 100 deg C after dissociation of one PPh3 via an (eta2-alkadiene)hydridoruthenium intermediate, e.g. 7, to form the eta3-allyl complexes 6, 8, and 9, respectively.The stable (eta1,eta2-4-alkenyl)ruthenium compounds 10 – 12 are formed if isomerization by beta-H-elimination is prevented by E-configuration of Ru and beta-H in a conformatively inflexible cyclopropyl system.The 31P chemical shifts of 2 – 4 and the (eta1-allyl)ruthenium complexes, of 10 – 12, and of the eta3-allyl complexes 6a, 8, 9, 13a are characteristic for the corresponding type of compounds.

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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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Reactions of metal acetylide complexes M(C{triple bond, long}CAr)(PP)Cp? (M = Fe, Ru; Ar = C6H5, C6H4Me-4; PP = (PPh3)2, dppe; Cp? = Cp, Cp*; not all combinations), or the analogous vinylidene, with cyanogen bromide yield monobromovinylidene complexes [M{C{double bond, long}C(Br)Ar}(PP)Cp?]+, isolated as PF6- salts. The trimethylsilyl-capped acetylides M(C{triple bond, long}CSiMe3)(PP)Cp? react with cyanogen bromide to give [M(C{double bond, long}CBr2)(PP)Cp?]+, the first examples of metal complexes containing a terminal dihalovinylidene ligand, which can be isolated as the BF4- salts. Molecular structures of representative mono- and di-bromovinylidene complexes are reported, together with those of Ru(C{triple bond, long}CSiMe3)(PPh3)2Cp and Ru(C{triple bond, long}CSiMe3)(dppe)Cp*.

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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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exo-Cluster dicarbollides substitution has allowed tuning of the E (Ru(II)/Ru(III)) potential to obtain the best-performing Kharasch catalyst. We postulate that this is possible through the to-and-fro electron movement between the boron cluster and the sulfonium moieties. Copyright

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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 general approach for the preparation of dinuclear eta5- and eta6-cyclic hydrocarbon platinum group metal complexes, viz. [(eta6-arene)2Ru2(NN?NN)Cl 2]2+ (arene = C6H6, 1; p- iPrC6H4Me, 2; C6Me6, 3), [(eta5-C5Me5)2M 2(NN?NN)Cl2]2+ (M = Rh, 4; Ir, 5), [(eta5-C5H5)2M2(NN? NN)(PPh3)2]2+ (M = Ru, 6; Os, 7), [(eta5-C5Me5)2Ru 2(NN?NN)(PPh3)2]2+ (8) and [(eta5-C9H7)2Ru 2(NN?NN)(PPh3)2]2+ (9), bearing the bis-bidentate ligand 1,2-bis(di-2-pyridylaminomethyl)benzene (NN?NN), which contains two chelating di-pyridylamine units connected by an aromatic spacer, is reported. The cationic dinuclear complexes have been isolated as their hexafluorophosphate or hexafluoroantimonate salts and characterized by use of a combination of NMR, IR and UV-vis spectroscopic methods and by mass spectrometry. The solid state structure of three derivatives, [2][SbF 6]2, [3][PF6]2 and [4][PF 6]2, has been determined by X-ray structure analysis.

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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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Several complexes of the acetylenic ditertiary phosphine, Ph2PC2C2PPh2, containing Mo, W, Fe, Ru or Au have been prepared; one CC triple bond in the Mo, W or Fe derivatives has been co-ordinated to Co2(CO)6 or Pt(PPh3)2 groups.Crystal structure determinations of <2(mu-PPh2C2C2PPh2)> 3 and CC>(CO)6> 7 show that the P-bonded M(CO)n groups take up transoid positions; in 3, the PCCCCP chain, which is situated about a centre of inversion, is nearly linear with CC distances of 1.192(7) Angstroem <1.201(6) Angstroem, molecule b>.In 7, co-ordination of the Co2(CO)6 group to one CC bond lengthens that bond by 0.13 Angstroem, compared with the unco-ordinated CC bond, and induces bend-back of the substituents of 141-143(1) deg (PPh2) and 145-146(1) deg (C2PPh2).Crystals of 3 are triclinic, space group P1/, a = 11.261(1), b = 12.456(2), c = 13.061(2) Angstroem, alpha = 79.23(2), beta = 75.73(1), gamma = 78.75(2) deg, Z = 2; 2870 data were refined to R = 0.042, R’= 0.046.Crystals of 7 are triclinic, space group P1/, a = 17.940(4), b = 19.695(4), c = 16.449(2) Angstroem, alpha = 111.92(1), beta = 108.83(1), gamma = 100.29(2) deg, Z = 4; 5942 data were refined to R = 0.055, R’= 0.056.

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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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There is described a method of fluorination of an alkenyl, alkynyl, aryl or isonitrile compound which comprises reacting an alkenyl, alkynyl, aryl or isonitrile compound with a metal-mediated outer-sphere electrophilic fluorinating (OSEF) agent.

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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, Recommanded Product: 32993-05-8

Two new ruthenium complexes, [Ru(eta5-Cp)(PPh3)(2,2?-bipy-4,4?-R)]+ with R = -CH2OH (Ru1) or dibiotin ester (Ru2) were synthesized and fully characterized. Both compounds were tested against two types of breast cancer cells (MCF7 and MDA-MB-231), showing better cytotoxicity than cisplatin in the same experimental conditions. Since multidrug resistance (MDR) is one of the main problems in cancer chemotherapy, we have assessed the potential of these compounds to overcome resistance to treatments. Ru2 showed exceptional selectivity as P-gp inhibitor, while Ru1 is possibly a substrate. In vivo studies in zebrafish showed that Ru2 is well tolerated up to 1.17 mg/L, presenting a LC50 of 5.73 mg/L at 5 days post fertilization.

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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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The synthesis, characterization and single-crystal structure determination of chiral compounds (eta5-C5R5)Ru(PHPh2)(PPh3)Cl (R=H 3, R=Me 4) and prochiral Cp * Ru(PHPh2)2Cl (6) are described. Compound 6 has been available from reaction of PHPh2 and several starting materials. The X-ray structure comparison between 3, 4 and 6 allowed us to compare the influence of the phosphine, Cp and Cp * ligands in these half-sandwich compounds. In addition, a structural investigation was carried out on Cp * Ru(NBD)Cl (7).

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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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The synthesis of the first example of a bime-tallic complex spanned by the C4H alkynylvinylidene ligand, [Cl(CO)2L 2RuC?CCH=C-RuL2(eta-C5H 5]PF6 (L = PPh3), is reported: the reaction of [Ru(CO)2L3] with butadiyne provides [RuH(C?CC? CH)(CO)2L2], which is converted to the chloro derivative [RuCl(C?CC?CH)-(CO)2L2] by N-chlorosuccinimide. Subsequent treatment with [Ru(thf)L2(eta- C5H5)]PF6 provides [Cl(CO)2L 2RuC? CCH=C=RuL2(eta-C5H 5)]PF6, deprotonation of which affords [Cl(CO) 2L2RuC?CC?CRuL2(eta-C 5H5)].

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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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An efficient and green protocol for the transfer hydrogenation of carbonyl and imine compounds is presented. The transformations are catalysed by the inexpensive and easily synthesised complex [RuCl(PPh3)(3- phenylindenyl)]. Its catalytic activity was compared to that of the most commonly encountered ruthenium complexes in transfer hydrogenation reactions involving several protypical substrates. Copyright

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