Category: 14799-93-0

Drake, Robert published the artcileHigh surface area polystyrene resin-supported Pt catalysts in room temperature solventless octene hydrosilylation using methyldichlorosilane, Formula: C9H20Cl2Si, the publication is Journal of the Chemical Society, Perkin Transactions 1 (2002), 1523-1534, database is CAplus.

Eight macroporous styrene-divinylbenzene-vinylbenzyl chloride resins have been synthesized by suspension polymerization The first four employed toluene as the porogen and the second four Bu acetate, at a level of 1 : 1 volume/volume relative to the comonomers. In all cases a high level of divinylbenzene leads to resins with high surface area, ∼500 m² g^-1, as determined from a BET treatment of N₂ sorption data. The functional group content of each group of four resins was varied from 5-25%. All resins were aminated to generate benzyltrimethylethylenediamine ligands on the polymer matrix, and then each was loaded with Pt(II) using KPtCl₄. The anal. data confirmed the formation of ligand PtCl₂ mol. complexes. Each of the resin immobilized Pt complexes has been assessed for catalytic activity in the room temperature, solventless, hydrosilylation of oct-1-ene using methyldichlorosilane, and a comparison made with soluble Speier’s catalyst under identical conditions. Though less active than the soluble catalyst the activity of all the polymer catalysts is good, and of practical value, the activity being higher than we have previously reported in the case of supports with lower surface area. Furthermore while Speier’s catalyst induces significant levels of oct-1-ene isomerization, isomerization in the case of the polymer catalysts is much lower, and indeed can be all but eliminated by appropriate washing. Extensive catalyst leaching and recycling studies have been carried out, with the best catalysts showing retention of useful activity after 10 cycles. Careful control experiments have provided strong circumstantial evidence that the isomerization that does arise with the polymer catalysts can be attributed to a component of leached soluble Pt species. Overall the most active and stable polymer catalyst has the highest surface area (∼550 m² g^-1) of those studied, along with the lowest ligand and Pt contents (each ∼0.25 mmol g^-1). The surface area dependence confirms our earlier view that maximum accessibility to potential metal complex catalytic sites is vital in these systems, and the metal complex loading dependence suggests that generating discrete isolated ligand PtCl₂ species provides optimal use of the loaded Pt.

Journal of the Chemical Society, Perkin Transactions 1 published new progress about 14799-93-0. 14799-93-0 belongs to chlorides-buliding-blocks, auxiliary class Aliphatic Chain, name is Dichloro(methyl)(octyl)silane, and the molecular formula is C9H20Cl2Si, Formula: C9H20Cl2Si.

Referemce:
https://en.wikipedia.org/wiki/Chloride,
Chlorides – an overview | ScienceDirect Topics

Shankar, Ravi published the artcileCatalytic oxidation of diorganosilanes to 1,1,3,3-tetraorganodisiloxanes with gold nanoparticle assembly at the water-chloroform interface, Related Products of chlorides-buliding-blocks, the publication is New Journal of Chemistry (2019), 43(2), 813-819, database is CAplus.

The formation of the spherical self-assembly of gold nanoparticles (AuNPs) of 200 ± 20 nm size at the water-chloroform interface is achieved by employing the cyclotetrasiloxane [RSCH₂CH₂SiMeO]₄ (R = CH₂CH₂OH) as the stabilizing ligand. The interfacially stabilized AuNPs act as a versatile catalyst for selective hydrolytic oxidation of only one of the Si-H bonds in secondary organosilanes, RR¹SiH₂ (R, R¹ = alkyl, aryl, and sila-alkyl), to afford the high yield synthesis of 1,1,3,3-tetraorganodisiloxanes, (HRR¹Si)₂O. The study unravels for the first time the role of the photothermal effect arising from the excitation of the surface plasmon resonance of the AuNPs under visible light irradiation in enhancing the catalytic activity at ambient temperature

New Journal of Chemistry published new progress about 14799-93-0. 14799-93-0 belongs to chlorides-buliding-blocks, auxiliary class Aliphatic Chain, name is Dichloro(methyl)(octyl)silane, and the molecular formula is C8H6ClN, Related Products of chlorides-buliding-blocks.

Referemce:
https://en.wikipedia.org/wiki/Chloride,
Chlorides – an overview | ScienceDirect Topics

Akapo, S. O. published the artcileThe production of stable, uniform reverse phases for liquid chromatography by oligomeric synthesis, Related Products of chlorides-buliding-blocks, the publication is Journal of Liquid Chromatography (1991), 14(2), 217-36, database is CAplus.

The use of oligomeric synthesis for the preparation of reverse phases by a fluidized bed technique is described. Reverse phases comprising 1-10 oligomers were synthesized and the phys. and chromatog. properties of each phase examined The nature of the interactions were investigated by measuring the excess free enthalpies of absorption of a homologous series of aromatic hydrocarbons and aromatic esters from retention measurements taken at different temperatures It is shown that a reverse phase comprising ≥5 oligomers behaves as a true dispersive phase, has consistent and predictable retentive properties, and is far more stable to acid conditions than the normal type reverse phase.

Journal of Liquid Chromatography published new progress about 14799-93-0. 14799-93-0 belongs to chlorides-buliding-blocks, auxiliary class Aliphatic Chain, name is Dichloro(methyl)(octyl)silane, and the molecular formula is C9H20Cl2Si, Related Products of chlorides-buliding-blocks.

Referemce:
https://en.wikipedia.org/wiki/Chloride,
Chlorides – an overview | ScienceDirect Topics

Onopchenko, Anatoli published the artcileTetraalkylsilanes via hydrosilylation of 1-alkenes, Recommanded Product: Dichloro(methyl)(octyl)silane, the publication is Journal of Chemical and Engineering Data (1988), 33(1), 64-6, database is CAplus.

Tetraalkylsilanes with 1 short and 3 long alkyl groups were prepared via a 2-step hydrosilylation procedure, which appears more suited for com. production than the Grignard or alkyllithium routes used previously. The viscosities of 2-component blends were treated by the ASTM D-341 procedure. The thermal stabilities of some silahydrocarbons and model paraffins, measured by the loss of their 40° viscosity, were determined at 371°.

Journal of Chemical and Engineering Data published new progress about 14799-93-0. 14799-93-0 belongs to chlorides-buliding-blocks, auxiliary class Aliphatic Chain, name is Dichloro(methyl)(octyl)silane, and the molecular formula is C9H20Cl2Si, Recommanded Product: Dichloro(methyl)(octyl)silane.

Referemce:
https://en.wikipedia.org/wiki/Chloride,
Chlorides – an overview | ScienceDirect Topics

Belyakova, Z. V. published the artcileEffect of catalysts on the reaction of allyl esters with hydrosilanes, Name: Dichloro(methyl)(octyl)silane, the publication is Russian Journal of General Chemistry (2010), 80(4), 728-733, database is CAplus.

Hydrosilylation of allyl esters XOCH₂CH:CH₂ (X = MeCO, CF₃CO, C₃F₇CO, CH₂:C(Me)CO), PhOCH₂CH:CH₂ and ClCH₂CH:CH₂ with hydrosilanes HSiCl₃, HSi(OEt)₃ and HSiMeCl₂ in the presence of Speier’s catalyst, Speier’s catalyst with additives, and of various Ni compounds was studied. The catalytic hydrosilylation reaction in the presence of the Speier catalyst is accompanied by reductions Additives to the Speier catalyst (vinyltriethoxysilane, allyl acetate and trifluoroacetate) suppress the reduction reaction considerably. E.g., hydrosilylation of allyl methacrylate with HSiCl₃ in the presence of Speier’s catalyst gave CH₂:C(Me)CO₂CH₂CH₂CH₂SiCl₃ in 67% yield and a ratio of 5.55 of the addition product to the reduction product. The same reaction in the presence of Speier’s catalyst and vinyltriethoxysilane afforded CH₂:C(Me)CO₂CH₂CH₂CH₂SiCl₃ in 87% yield and a ratio of 114.1 of the addition product to the reduction product. In the presence of the studied Ni compounds mainly reduction and isomerization reactions of allyl Ph ether occurred. The best Ni catalysts for hydrosilylation were mixtures of NiCl₂ or Ni(acac)₂ with phosphine oxides. In contrast to allyl Ph ether, the hydrosilylation of simple olefins proceeds easier. E.g., hydrosilylation of 1-heptene with HSiCl₃ in the presence of NiCl₂ and (octyl)₃P:O gives the hydrosilylation product trichloroheptylsilane in 94% yield in the reaction mixture

Russian Journal of General Chemistry published new progress about 14799-93-0. 14799-93-0 belongs to chlorides-buliding-blocks, auxiliary class Aliphatic Chain, name is Dichloro(methyl)(octyl)silane, and the molecular formula is C9H20Cl2Si, Name: Dichloro(methyl)(octyl)silane.

Referemce:
https://en.wikipedia.org/wiki/Chloride,
Chlorides – an overview | ScienceDirect Topics

Yun, Seung Beom published the artcileSynthesis and properties of poly(carbomethyloctylsiloxane)s by melt copolymerization of bis(diethylamino)methyloctylsilane and aryldiol derivatives, HPLC of Formula: 14799-93-0, the publication is Bulletin of the Korean Chemical Society (2008), 29(12), 2373-2378, database is CAplus.

We carried out the melt copolymerizations of bis(diethylamino)methyloctylsilane with several aryldiols to afford poly(carbomethyloctylsiloxane)s containing fluorescent aromatic chromophore groups in the polymer main chain: poly(oxybiphenyloxymethyloctyl silane), poly(oxy(4,4′-isopropylidene)diphenyleneoxymethyloctylsilane), poly(oxy(4,4′-hexafluoroisopropylidene)diphenyleneoxymethyloctylsilane),poly(oxy-2,6-naphthalenediyloxymethyloctylsilane),and poly(oxyphenyleneoxymethyloctylsilane). These materials are soluble in common organic solvents such as CHCl₃ and THF. FTIR spectra of all the polymeric materials show the characteristic Si-O-C stretching frequencies at 1051-1082 cm^-1. The polymers in THF solution exhibit strong maximum absorption peaks at 263-341 nm with the strong maximum excitation peaks at 253-325 nm, and strong maximum fluorescence emission bands at 300-420 nm. According to TGA all the polymers are stable up to 200 °C with weight loss of less than 9% in nitrogen.

Bulletin of the Korean Chemical Society published new progress about 14799-93-0. 14799-93-0 belongs to chlorides-buliding-blocks, auxiliary class Aliphatic Chain, name is Dichloro(methyl)(octyl)silane, and the molecular formula is C7H8BBrO3, HPLC of Formula: 14799-93-0.

Referemce:
https://en.wikipedia.org/wiki/Chloride,
Chlorides – an overview | ScienceDirect Topics

Kim, Ji Ho published the artcileOxidative coupling polymerization of diethynylsilane derivatives and 1,2-diethynyl-1,1,2,2-tetramethyldisilane, Category: chlorides-buliding-blocks, the publication is Bulletin of the Korean Chemical Society (2006), 27(6), 869-874, database is CAplus.

The Glaser oxidative coupling polymerizations was performed on diethynyldiphenylsilane, diethynylmethylphenylsilane, diethynylmethyloctylsilane, and 1,2-diethynyl-1,1,2,2-tetramethyldisilane to afford polycarbosilanes containing diethynyl and organosilane groups in the main chain, such as poly(diethynyldiphenylsilane), poly(diethynylmethylphenylsilane), poly(diethynylmethyloctylsilane), and poly(1,2-diethynyl-1,1,2,2-tetramethyldisilane), resp. These obtained materials are almost insoluble in common organic solvents such as CHCl₃ and THF probably due to the presence of a rigid rod diacetylene group along the polymer main chain. Therefore, the polymers were characterized using several spectroscopic methods in solid state. FTIR spectra of all the polymeric materials show that the characteristic CC stretching frequencies appear at 2147-2154 cm^-1, in particular. The polymers in the solid state exhibit that the strong maximum excitation peaks appear at 260-283 nm and the strong maximum fluorescence emission bands at 367-412 nm, especially Thermogravimetric anal. of the materials shows that about 55-68% of the initial polymer weights remain at 400°C in nitrogen.

Bulletin of the Korean Chemical Society published new progress about 14799-93-0. 14799-93-0 belongs to chlorides-buliding-blocks, auxiliary class Aliphatic Chain, name is Dichloro(methyl)(octyl)silane, and the molecular formula is C9H20Cl2Si, Category: chlorides-buliding-blocks.

Referemce:
https://en.wikipedia.org/wiki/Chloride,
Chlorides – an overview | ScienceDirect Topics

Jung, Eun Ae published the artcileSynthesis and photoelectronic properties of thermally stable poly[oxy(2,7-fluoren-9-onenylene)oxy(diorganosilylene)]s, HPLC of Formula: 14799-93-0, the publication is Bulletin of the Korean Chemical Society (2012), 33(6), 2031-2036, database is CAplus.

Melt copolymerization reactions of several bis(diethylamino)silane derivatives, bis(diethylamino)methylphenylsilane, bis(diethylamino)methyloctylsilane, 1,2-bis(diethylamino)tetramethyldisilane, and 1,3-bis(diethylamino)tetramethyldisiloxane, with 2,7-dihydroxyfluoren-9-one were carried out to yield poly[oxy(2,7-fluoren-9-onenylene)oxy(diorganosilylene)]s bearing the fluoren-9-one fluorescent aromatic group in the polymer main chain: poly[oxy(2,7-fluoren-9-onenylene)oxy(methylphenylsilylene)], poly[oxy(2,7-fluoren-9-onenylene)oxy(methyloctylsilylene)], poly[oxy(2,7-fluoren-9-onenylene)oxy(tetramethyldisilylene)], and poly[oxy(2,7-fluoren-9-onenylene)oxy(tetramethyldisiloxanylene)]. These polymeric materials are soluble in common organic solvents such as CHCl₃ and THF. FTIR spectra of all the materials reveal characteristic Si-O-C stretching frequencies at 1012-1018 cm^-1. In the THF solution, the prepared materials show strong maximum absorption peaks at 258-270 nm, strong maximum excitation peaks at 260-280 nm, and strong maximum fluorescence emission bands at 310-420 nm. TGA thermograms suggest that most of the polymers are essentially stable to 200° without any weight loss and up to 300° with only a weight loss of less than 5% in nitrogen.

Bulletin of the Korean Chemical Society published new progress about 14799-93-0. 14799-93-0 belongs to chlorides-buliding-blocks, auxiliary class Aliphatic Chain, name is Dichloro(methyl)(octyl)silane, and the molecular formula is C9H20Cl2Si, HPLC of Formula: 14799-93-0.

Referemce:
https://en.wikipedia.org/wiki/Chloride,
Chlorides – an overview | ScienceDirect Topics

Chung, Woojung published the artcileTime-Resolved Observation of Chiral-Index-Selective Wrapping on Single-Walled Carbon Nanotube with Non-Aromatic Polysilane, Name: Dichloro(methyl)(octyl)silane, the publication is Journal of the American Chemical Society (2013), 135(6), 2374-2383, database is CAplus and MEDLINE.

In the present paper, we ascertain two novel findings on chiral-index-selective binding/separating of single-walled carbon nanotubes (SWNTs) with a nonaromatic polymer, poly(dialkylsilane) (PSi). PSi is a typical σ-conjugated polymer, composed of alkyl side chains attached to the silicon (Si)-catenated main chain. First, PSi’s with linear alkyl side chains showed significant diameter-selective wrapping for SWNTs with ca. 0.9 nm in diameter, resulting in the selective separation of (7,6) and (9,4) SWNTs. Its driving force was demonstrated to be cooperative CH-π interactions among the alkyl side chains of PSi’s and the curved graphene of SWNTs. Second, the dynamic wrapping behavior of PSi’s onto SWNTs was elucidated with time-resolved UV spectroscopy. Highly anisotropic UV absorption of PSi along the Si main chain was utilized as a “chromophoric indicator” to monitor the global/local conformations, which enabled us to track kinetic structural changes of PSi’s on SWNTs. Consequently, we concluded that upon wrapping, flexible/helical PSi with an average dihedral angle (φ) of 145° and Kuhn’s segment length (λ^-1) of 2.6 nm interconverted to the more stiffer/planar conformation with 170° and λ^-1 of 7.4 nm. Furthermore, through kinetic analyses of the time-course UV spectra, we discovered the fact that PSi’s involve three distinct structural changes during wrapping. That is, (i) the fast adsorption of several segments within dead time of mixing (<30 ms), following (ii) the gradual adsorption of loosely wrapped segments with the half-maximum values (τ₁) of 31.4 ms, and (iii) the slow rearrangement of the entire chains with τ₂ of 123.1 ms, coupling with elongation of the segment lengths. The present results may be useful for rational design of polymers toward chiral-index-selective binding/separating of desired (n,m) SWNTs.

Journal of the American Chemical Society published new progress about 14799-93-0. 14799-93-0 belongs to chlorides-buliding-blocks, auxiliary class Aliphatic Chain, name is Dichloro(methyl)(octyl)silane, and the molecular formula is C9H20Cl2Si, Name: Dichloro(methyl)(octyl)silane.

Referemce:
https://en.wikipedia.org/wiki/Chloride,
Chlorides – an overview | ScienceDirect Topics

Itoh, Miki published the artcilePreparation and evaluation of two-dimensional polymer films by chemical modification of an alkanethiol self-assembled monolayer for protection of copper against corrosion, HPLC of Formula: 14799-93-0, the publication is Journal of the Electrochemical Society (1995), 142(11), 3696-704, database is CAplus.

Chem. modification of an 11-mercapto-1-undecanol (MUO) self-assembled monolayer chemisorbed on the Cu surface with alkyltrichlorosilanes (C_nTCS) has improved the protective ability of the monolayers against corrosion of Cu in aqueous and atm. environments. Further improvements of the ability were studied by modification of the MUO self-assembled layer adsorbed on Cu with tetrachlorosilane (TCS) and 1,2-bis(trichlorosilyl)ethane (BTSCE) for constructing a two-dimensional polymer structure in the assembly layer on the surface. The TCS or BTSCE-modified MUO monolayer was further treated with coupling agents like octyldimethylchlorosilane, octylmethyldichlorosilane, and octyltrichlorosilane. The modified monolayers were characterized by FTIR reflection spectroscopy and contact angle measurements. Although the protective abilities of the modified layers against the cathodic reaction of Cu corrosion in aerated 0.5M Na₂SO₄ were not necessarily increased remarkably from those of the C_nTCS-modified MUO monolayers, network structures arising from two-dimensional polymerization with lateral siloxane linkages between mols. adsorbed on Cu resulted in enhancement of the protective ability against the anodic process.

Journal of the Electrochemical Society published new progress about 14799-93-0. 14799-93-0 belongs to chlorides-buliding-blocks, auxiliary class Aliphatic Chain, name is Dichloro(methyl)(octyl)silane, and the molecular formula is C9H20Cl2Si, HPLC of Formula: 14799-93-0.

Referemce:
https://en.wikipedia.org/wiki/Chloride,
Chlorides – an overview | ScienceDirect Topics