Tag: M.W:500-600

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. 12150-46-8, C34H28FeP2. A document type is Article, introducing its new discovery., HPLC of Formula: C34H28FeP2

Thermally stable acrylic acid complexes with low-valent nickel or palladium of the type [(L)M(eta2-CH2=CH-COOH)] [1a: M = Ni, L = 1,1?-bis(diphenylphosphanyl)ferrocene (dppf), 1b: M = Ni, L = 1,1?-bis(diisopropylphosphanyl)ferrocene (dippf), 1c: M = Pd, L = dippf] were obtained by reaction of [Ni(cod)2] or [(L)Pd(nb)] with acrylic acid in the presence of the phosphane ligands. X-ray diffraction analysis of 1a and 1c, respectively display that only the olefin part is coordinated. Hydrogen bonds between two carboxyl groups result in dimers in the solid state. The isomeric nickela-cyclic carboxylates of the type [(L)Ni(CH2CH 2COO)] are stable complexes in case of 2a (L = dppf) and 2b (L = dippf) whereas the unstable compound 2c [L = 1,1?-bis(di-tert- butylphosphanyl)-ferrocene (dtbpf)] undergoes fast reductive decoupling to form CO2 and the ethylene complex [(dtbpf)Ni(ethylene)] (3c). The related complex [(dippf)Ni(ethylene)] (3b) was prepared from nickel(0) complexes by ligand exchange reaction. 3b and 3c were characterized by elemental analyses, NMR spectroscopy and X-ray structure analysis of single crystals. Wiley-VCH Verlag GmbH & Co. KGaA, 2007.

Interested yet? Keep reading other articles of 12150-46-8!, HPLC of Formula: C34H28FeP2

Reference：
Phosphine ligand,
Chiral phosphine ligands in asymmetric synthesis. Molecular structure and absolute configuration of (1,5-cyclooctadiene)-(2S,3S)-2,3-bis(diphenylphosphino)butanerhodium(I) perchlorate tetrahydrofuran solvate

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. 12150-46-8, Name is 1,1-Bis(diphenylphosphino)ferrocene, molecular formula is C34H28FeP2. In a Article，once mentioned of 12150-46-8, COA of Formula: C34H28FeP2

Treatment of the platinum(0) complex [Pt(dppf)(nbe)] [1; dppf = 1,1?-bis(diphenylphosphanyl)ferrocene, nbe = norbornene] with the 1,2-dihydrodisilanes HPh2SiSiPh2H or HMe2SiSiMe2H gave [Pt(SiR2H)2(dppf)] (2, R = Ph; 4, R = Me) by oxidative addition of the Si-Si bond. The bis-silyl complexes 2 and 4 react with H2 to give [Pt(H)(SiR2H)(dppf)] (3, R = Ph; 5, R = Me) and H2SiR2. Adding HPh2SiSiPh2H to the hydrido silyl complex 3, which can also be prepared through Si-H activation of H2SiPh2 at 1, resulted in the regeneration of 2 as well as in the release of H2SiPh2. Treatment of HR2SiSiR2H with H2 (1.7 bar) in the presence of 2 or 4 under moderate conditions led to the catalytic formation of H2SiR2 with TONs up to 25. The catalytic conversions are distinguished by a high selectivity for the hydrogenolysis of the 1,2-dihydrodisilanes, and no significant tendency for redistribution reactions at Si was observed.

Balanced chemical reaction does not necessarily reveal either the individual elementary reactions by which a reaction occurs or its rate law.COA of Formula: C34H28FeP2. In my other articles, you can also check out more blogs about 12150-46-8

Reference：
Phosphine ligand,
Chiral phosphine ligands in asymmetric synthesis. Molecular structure and absolute configuration of (1,5-cyclooctadiene)-(2S,3S)-2,3-bis(diphenylphosphino)butanerhodium(I) perchlorate tetrahydrofuran solvate

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. 161265-03-8, Name is (9,9-Dimethyl-9H-xanthene-4,5-diyl)bis(diphenylphosphine), molecular formula is C39H32OP2. In a Patent，once mentioned of 161265-03-8, SDS of cas: 161265-03-8

The invention discloses a succinic acid diester or succinic acid diester derivatives of the preparation method, in double-phosphine ligand and palladium compound under the action of a catalyst through the alkyne double carbonylation esterification reaction with carbon monoxide that the alkyne alcohol twice carbonylation esterification reaction process, preparation of succinic acid diester or succinic acid diester derivative. The use of double-phosphine ligand can guarantee the palladium catalyst effective to catalytically alkyne double carbonylation esterification reaction, thus the high yield succinic acid diester derivatives (or succinic acid diester). The phosphine ligand is characterized in that the double-phosphine ligand. This invention is a pot synthesis, the synthesis step is simple; in the selected pair of teeth phosphine ligand and palladium compound under the action of a catalyst, alkyne alcohol with the carbon monoxide produced by the reaction of succinic acid diester or succinic acid diester derivatives of high yield; catalysts used in the catalytic performance is good, stable service life. (by machine translation)

Balanced chemical reaction does not necessarily reveal either the individual elementary reactions by which a reaction occurs or its rate law.SDS of cas: 161265-03-8. In my other articles, you can also check out more blogs about 161265-03-8

Reference：
Phosphine ligand,
Chiral phosphine ligands in asymmetric synthesis. Molecular structure and absolute configuration of (1,5-cyclooctadiene)-(2S,3S)-2,3-bis(diphenylphosphino)butanerhodium(I) perchlorate tetrahydrofuran solvate

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. 166330-10-5, Name is (Oxybis(2,1-phenylene))bis(diphenylphosphine), molecular formula is C36H28OP2. In a Patent，once mentioned of 166330-10-5, HPLC of Formula: C36H28OP2

The invention relates to a can be represented by following formula (III) useful as pharmaceutical intermediates in the synthesis of pyrrole ketone compound, the method comprising: under a nitrogen atmosphere, in an organic solvent, the catalyst, organic ligand, oxidizing agent, auxiliary and presence of alkali, the following formula (I) compounds and the following formula (II) compound generating reaction, after-treatment after reaction, so as to obtain the compound of said formula (III), Wherein R is H, C 1-C 6 alkyl, C 1-C 6 alkoxy, halogen or nitro. The stated method, through through the use of catalyst, ligand, oxidizing agent, alkali and integrated reaction system of the solvent, the objective product can be obtained with high yield, in the organic synthesis in particular the technical field of pharmaceutical intermediates synthesized with good application prospect and industrialized production potential. (by machine translation)

Balanced chemical reaction does not necessarily reveal either the individual elementary reactions by which a reaction occurs or its rate law.HPLC of Formula: C36H28OP2. In my other articles, you can also check out more blogs about 166330-10-5

Reference：
Phosphine ligand,
Chiral phosphine ligands in asymmetric synthesis. Molecular structure and absolute configuration of (1,5-cyclooctadiene)-(2S,3S)-2,3-bis(diphenylphosphino)butanerhodium(I) perchlorate tetrahydrofuran solvate

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. 161265-03-8, Name is (9,9-Dimethyl-9H-xanthene-4,5-diyl)bis(diphenylphosphine), molecular formula is C39H32OP2. In a Patent，once mentioned of 161265-03-8, Quality Control of: (9,9-Dimethyl-9H-xanthene-4,5-diyl)bis(diphenylphosphine)

The invention relates to a process for preparing primary amines which comprises the process steps A) provision of a solution of a secondary alcohol in a fluid, nongaseous phase, B) contacting of the phase with free ammonia and/or at least one ammonia-releasing compound and a homogeneous catalyst and optionally C) isolation of the primary amine formed in process step B), characterized in that the volume ratio of the volume of the liquid phase to the volume of the gas phase in process step B is greater than or equal to 0.25, and/or in that the ammonia is used in process step B) in a molar ratio based on the hydroxyl groups in the secondary alcohol of at least 5:1.

Balanced chemical reaction does not necessarily reveal either the individual elementary reactions by which a reaction occurs or its rate law.Quality Control of: (9,9-Dimethyl-9H-xanthene-4,5-diyl)bis(diphenylphosphine). In my other articles, you can also check out more blogs about 161265-03-8

Reference：
Phosphine ligand,
Chiral phosphine ligands in asymmetric synthesis. Molecular structure and absolute configuration of (1,5-cyclooctadiene)-(2S,3S)-2,3-bis(diphenylphosphino)butanerhodium(I) perchlorate tetrahydrofuran solvate

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. 161265-03-8, Name is (9,9-Dimethyl-9H-xanthene-4,5-diyl)bis(diphenylphosphine), molecular formula is C39H32OP2. In a Article，once mentioned of 161265-03-8, name: (9,9-Dimethyl-9H-xanthene-4,5-diyl)bis(diphenylphosphine)

Herein, we present a new strategy in which highly emissive thermally activated delayed fluorescence (TADF) materials can be obtained from modifying or tuning a non-TADF donor (D)-acceptor (A)-type organic molecule via coordination of the metal ionic fragment. Theoretical calculation and photophysical properties reveal that the D-A-type free ligand emits both weak fluorescence and dual roomerature phosphorescence, whereas the two Ag(I) complexes display efficient blue TADF, exhibiting photoluminescence quantum yields nearly 100% in films with short decay lifetimes (tau ? 6 mus). This is attributed to the four optimized parameters induced by Ag(I) coordination: (1) narrow singlet (S1)-triplet (T1) energy gaps (I”EST). (2) T1 states have a hybrid local excitation and charge transfer (CT) character, and S1 states have a predominant CT character. Both the parameters facilitate reverse intersystem crossing. (3) Radiative rate constant (kr(S1?S0)) is increased. (4) Molecular rigidity is strengthened. For the first time, this work shows a powerful method to design efficient ligand-centered TADF in Ag(I) complexes based on the conventional D-A-type molecule, which significantly enriches the chemical space for the development of TADF materials.

Balanced chemical reaction does not necessarily reveal either the individual elementary reactions by which a reaction occurs or its rate law.name: (9,9-Dimethyl-9H-xanthene-4,5-diyl)bis(diphenylphosphine). In my other articles, you can also check out more blogs about 161265-03-8

Reference：
Phosphine ligand,
Chiral phosphine ligands in asymmetric synthesis. Molecular structure and absolute configuration of (1,5-cyclooctadiene)-(2S,3S)-2,3-bis(diphenylphosphino)butanerhodium(I) perchlorate tetrahydrofuran solvate

Application of 12150-46-8. Chemistry is an experimental science, and the best way to enjoy it and learn about it is performing experiments.Introducing a new discovery about 12150-46-8, Name is 1,1-Bis(diphenylphosphino)ferrocene

A series of ruthenium(II) complexes [RuH(CO)(NCCH3)(PPh3)2(diphos)][BF4] (diphos: = dppm, Ph2PCH2PPh2 (2); dppe = Ph2PCH2CH2PPh2 (3); = dppp, Ph2PCH2 CH2CH2PPh2 (4); = dppb, Ph2PCH2CH2CH2CH2PPh 2 (5)) and [RuH(CO)(NCCH3) (PPh3)(diphos)][BF4] (diphos: = dppe (6); = dppp (7); = dppb (8); = dppf, Fe(eta5-C5H4PPh2)2 (9)) was prepared from the reaction of [RuH(CO)(NCCH3)2(PPh3)2] [BF4] and diphos ligands by changing the reaction conditions. These complexes have been characterized by analytical and spectroscopic (IR and 1H NMR) methods. The structure of [RuH(CO)(NCCH3)(PPh3)(dppf)][BF4] (9) has been determined by X-ray crystallography. The homogeneous hydrogenations of propanal to propan-1-ol catalyzed by complexes 2-9 have been investigated at 90C and 20 atm hydrogen pressure. The catalytic activities of the chelating diphosphine species 6-9 were dependent upon the structure of the complex as well as upon the ring sizes of the chelates. Copyright

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Reference：
Phosphine ligand,
Chiral phosphine ligands in asymmetric synthesis. Molecular structure and absolute configuration of (1,5-cyclooctadiene)-(2S,3S)-2,3-bis(diphenylphosphino)butanerhodium(I) perchlorate tetrahydrofuran solvate

In an article, published in an article, once mentioned the application of 12150-46-8, Name is 1,1-Bis(diphenylphosphino)ferrocene,molecular formula is C34H28FeP2, is a conventional compound. this article was the specific content is as follows.name: 1,1-Bis(diphenylphosphino)ferrocene

A series of new heteroleptic complexes of the form [M(dppf)L] [where dppf = 1,1?-bis(diphenylphosphino)ferrocene; M = Ni(II) (1), Pd(II) (2), Pt(II) (3) and L = p-tolylsulfonyl dithiocarbimate, p-CH3C6H 4SO2NCS2; M = Ni(II) (4), Pd(II) (5), Pt(II) (6) and L = p-chlorobenzene sulfonyl dithiocarbimate, p-ClC6H 4SO2NCS2; M = Ni(II) (7), Pd(II) (8) and L = p-bromobenzene sulfonyl dithiocarbimate, p-BrC6H4SO 2NCS2; M = Ni(II) (9), Pd(II) (10) and L = 1-ethoxycarbonyl-1-cyanoethylene-2,2-dithiolate (ecda), C2H 5OCO(CN)CCS2] have been synthesized and characterized by elemental analysis, spectroscopy (IR,1H, 13C and 31P NMR and UV-Vis.), cyclic voltammetry and single crystal X-ray diffraction and their light harvesting properties have been investigated by using them as photosensitizers in dye sensitized TiO2 solar cells. In these complexes the metal lies at the center of a distorted square planar environment; the distortion varies in the order Pd ? Pt > Ni. Among these, the nickel complexes showed light-to-electrical energy conversion efficiencies close to that shown by Ru dye N719 whereas the corresponding palladium and platinum complexes show inferior efficiencies under similar experimental conditions.

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Reference：
Phosphine ligand,
Chiral phosphine ligands in asymmetric synthesis. Molecular structure and absolute configuration of (1,5-cyclooctadiene)-(2S,3S)-2,3-bis(diphenylphosphino)butanerhodium(I) perchlorate tetrahydrofuran solvate

Application of 12150-46-8, An article , which mentions 12150-46-8, molecular formula is C34H28FeP2. The compound – 1,1-Bis(diphenylphosphino)ferrocene played an important role in people’s production and life.

Arylpalladium aryloxide complexes containing sterically and electronically varied phosphine ligands were prepared, and the rates for reductive elimination of diaryl ethers from these complexes were studied to determine the ligand properties that most strongly accelerate this unusual reaction. Electronic and steric effects were probed by preparing monomeric palladium complexes of the type (L)Pd(Ar)(OAr?), in which L = DPPF (1,1?-bis-diphenylphosphinoferrocene), CF3-DPPF (1,1?-bis[di(4-(trifluoromethyl)phenyl)phosphino]ferrocene), and D-t-BPF (1,1?-bis(di-tert-butylphosphino)ferrocene) and Ar = electron-deficient and electron-neutral aryl groups. Direct C-O bond-forming reductive elimination to form diaryl ethers in high yield was observed after warming the complexes that contained an electron-deficient aryl group bound to palladium. The rate constant for C-O bond-forming reductive elimination from the CF3-DPPF-ligand palladium complex was twice that obtained for the analogous DPPF-ligated-complex. Reductive elimination of diaryl ether from the more bulky D-t-BPF complex occurred roughly 100 times faster than from the DPPF complex. Thermolysis of DPPF and CF3-DPPF complexes containing an electron-neutral aryl group did not form diaryl ether. Thermolysis of (D-t-BPF)Pd(Ph)(OC6H4-4-OMe) also did not form diaryl ether and generated the two monophosphines PhP(t-Bu)2 and FcP(t-Bu)2 (di-tert-butylphosphinoferrocene). However, heating of a FcP(t-Bu)2-ligated aryloxide complex containing an electron-neutral, palladium-bound aryl group generated diaryl ether in 10-25% yield. Moreover, heating of this complex in the presence of an excess of P(t-Bu)3 or Ph5FcP(t-Bu)2 or 1 equiv of 2-di-tert-butylphosphino-1,1?-binaphthyl generated diaryl ether in higher, 58-95%, yields. The effect of ligand concentrations on reaction yields implied that exchange of the bulkier ligands with FcP(t-Bu)2 induced the reductive elimination of diaryl ether.

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Reference：
Phosphine ligand,
Chiral phosphine ligands in asymmetric synthesis. Molecular structure and absolute configuration of (1,5-cyclooctadiene)-(2S,3S)-2,3-bis(diphenylphosphino)butanerhodium(I) perchlorate tetrahydrofuran solvate

In an article, published in an article, once mentioned the application of 166330-10-5, Name is (Oxybis(2,1-phenylene))bis(diphenylphosphine),molecular formula is C36H28OP2, is a conventional compound. this article was the specific content is as follows.Recommanded Product: 166330-10-5

Forming a thin film by the process solution [a], the organic EL device is used as a rare earth complex composition of particulate emission can be obtained even when the light emitting layer, an organic EL device having a light emitting layer of a thin film using the same. The rare earth complex polymers having superior heat resistance characteristics. One Eu ions to 1 [a], the phosphine oxide group containing the particular illustrated in Figure 10 contains a complex composition comprising the molecular complex of locating a portion of the molecular complex. The organic EL elements as the light emitting layer is a thin film of the composition. [Drawing] Figure 10 (by machine translation)

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Reference：
Phosphine ligand,
Chiral phosphine ligands in asymmetric synthesis. Molecular structure and absolute configuration of (1,5-cyclooctadiene)-(2S,3S)-2,3-bis(diphenylphosphino)butanerhodium(I) perchlorate tetrahydrofuran solvate