Category: 14799-94-1

Gauthier, S. published the artcileThe effect of phase-transfer catalysts on polysilane formation, Quality Control of 14799-94-1, the publication is Macromolecules (1989), 22(5), 2213-18, database is CAplus.

Polysilanes are most often prepared by a Wurtz-type coupling of organodichlorosilanes with Na in refluxing PhMe. The addition of a catalytic amount of crown ether to the reaction mixture increases the rate of disappearance of the monomer with increasing crown ether concentration, suggesting that anionic species are involved in the polymerization mechanism. Higher yields of polymer relative to cyclic material were obtained, and the polymer displays a monomodal distribution. The presence of cryptand has similar effects although some degradation of the polymer upon continued refluxing of the reaction mixture was observed Degradation experiments on poly(n-hexylmethylsilane) with Na in refluxing PhMe showed that the polymer degraded to cyclics in a few minutes with cryptand but not with crown ether.

Macromolecules published new progress about 14799-94-1. 14799-94-1 belongs to chlorides-buliding-blocks, auxiliary class Aliphatic Chain, name is Dichloro(hexyl)(methyl)silane, and the molecular formula is C7H16Cl2Si, Quality Control of 14799-94-1.

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

Lochmueller, C. H. published the artcileQuantitative photoacoustic spectroscopy of chemically-modified silica surfaces, Recommanded Product: Dichloro(hexyl)(methyl)silane, the publication is Analytica Chimica Acta (1980), 118(1), 101-8, database is CAplus.

The degree of surface coverage on chem.-modified silica gel was determined by using photoacoustic spectroscopy. Vibrational overtones in the near IR were employed for the examination of modified materials containing bonded aliphatic, aromatic, and aminoalkyl functions. A linear relation between photoacoustic signal amplitude and C or N content of the chem.-modified surface was obtained.

Analytica Chimica Acta published new progress about 14799-94-1. 14799-94-1 belongs to chlorides-buliding-blocks, auxiliary class Aliphatic Chain, name is Dichloro(hexyl)(methyl)silane, and the molecular formula is C7H16Cl2Si, Recommanded Product: Dichloro(hexyl)(methyl)silane.

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

Brovko, V. S. published the artcileHydrosilylation of unsaturated compounds in the presence of thiourea complexes of platinum(II) and palladium(II), Related Products of chlorides-buliding-blocks, the publication is Zhurnal Prikladnoi Khimii (Sankt-Peterburg, Russian Federation) (1987), 60(11), 2554-6, database is CAplus.

Treating 1-hexene or PhCCH with MeSiHCl₂ in the presence of the title catalysts, e.g., [Pt(NH₂CSNH₂)₄][BPh₄]₂ (I), cis-[Pt(PhNCSNHR)₂]Cl₂ (II, R = α-pyridyl), [Pd(PhNHCSNHPh)₄]²⁺ (bound on ion-exchange resin KRS-20P), gave BuCH₂CH₂SiCl₂Me or E-PhCH:CHSiCl₂Me, resp., with nearly 100% selectivity and 90-100% yields with I or II as catalysts.

Zhurnal Prikladnoi Khimii (Sankt-Peterburg, Russian Federation) published new progress about 14799-94-1. 14799-94-1 belongs to chlorides-buliding-blocks, auxiliary class Aliphatic Chain, name is Dichloro(hexyl)(methyl)silane, and the molecular formula is C7H16Cl2Si, Related Products of chlorides-buliding-blocks.

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

Lugovoi, Yu. M. published the artcileKinetics of competitive addition of methyldichlorosilane to 1-hexene and to acetone, HPLC of Formula: 14799-94-1, the publication is Reaction Kinetics and Catalysis Letters (1989), 39(2), 379-85, database is CAplus.

The competitive addition of MeSiHCl₂ to 1-hexene and acetone (initiated by γ-irradiation) has been studied. The relative rate constant depends on acetone concentration and does not obey the Arrhenius equation. A possible explanation is the complexation of methyldichlorosilyl radicals with acetone mols.

Reaction Kinetics and Catalysis Letters published new progress about 14799-94-1. 14799-94-1 belongs to chlorides-buliding-blocks, auxiliary class Aliphatic Chain, name is Dichloro(hexyl)(methyl)silane, and the molecular formula is C7H16Cl2Si, HPLC of Formula: 14799-94-1.

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, Recommanded Product: Dichloro(hexyl)(methyl)silane, 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 14799-94-1. 14799-94-1 belongs to chlorides-buliding-blocks, auxiliary class Aliphatic Chain, name is Dichloro(hexyl)(methyl)silane, and the molecular formula is C14H31NO2, Recommanded Product: Dichloro(hexyl)(methyl)silane.

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

Naganawa, Yuki published the artcileA General and Selective Synthesis of Methylmonochlorosilanes from Di-, Tri-, and Tetrachlorosilanes, Application of Dichloro(hexyl)(methyl)silane, the publication is Organic Letters (2021), 23(2), 601-606, database is CAplus and MEDLINE.

Direct catalytic transformation of chlorosilanes into organosilicon compounds remains challenging due to difficulty in cleaving the strong Si-Cl bond(s). Herein, it is reported the palladium-catalyzed cross-coupling reaction of chlorosilanes with organoaluminum reagents. A combination of [Pd(C₃H₅)Cl]₂ and DavePhos ligand catalyzed the selective methylation of various dichlorosilanes, trichlorosilanes, and tetrachlorosilane to give the corresponding monochlorosilanes.

Organic Letters published new progress about 14799-94-1. 14799-94-1 belongs to chlorides-buliding-blocks, auxiliary class Aliphatic Chain, name is Dichloro(hexyl)(methyl)silane, and the molecular formula is C7H16Cl2Si, Application of Dichloro(hexyl)(methyl)silane.

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

Beppu, Teruo published the artcileHydrosilane synthesis via catalytic hydrogenolysis of halosilanes using a metal-ligand bifunctional iridium catalyst, Quality Control of 14799-94-1, the publication is Journal of Organometallic Chemistry (2018), 75-80, database is CAplus.

Hydrogenolysis of various halosilanes was catalyzed by Ir amido complexes to produce hydrosilanes. Selective monohydrogenolysis of di- and trichlorosilanes similarly proceeded, giving chlorohydrosilanes (R₂SiHCl or RSiHCl₂) as synthetically important building blocks for various organosilicon compounds A mechanistic study supported the in-situ formation of an Ir hydride species as a key intermediate, which could transfer the hydride to the Si atom through a metal-ligand bifunctional mechanism. One-pot hydrotrimethylsilylation of olefins was achieved via successive hydrogenolysis and hydrosilylation reactions starting from Me₃SiCl.

Journal of Organometallic Chemistry published new progress about 14799-94-1. 14799-94-1 belongs to chlorides-buliding-blocks, auxiliary class Aliphatic Chain, name is Dichloro(hexyl)(methyl)silane, and the molecular formula is C7H16Cl2Si, Quality Control of 14799-94-1.

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, Product Details of C7H16Cl2Si, 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 14799-94-1. 14799-94-1 belongs to chlorides-buliding-blocks, auxiliary class Aliphatic Chain, name is Dichloro(hexyl)(methyl)silane, and the molecular formula is C7H16Cl2Si, Product Details of C7H16Cl2Si.

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

Freidlina, R. Kh. published the artcileThermal telomerization of olefins with silicon hydrides, HPLC of Formula: 14799-94-1, the publication is Khim. i Prakt. Primenenie Kremneorgan. Soedin., Tr. Konf., Leningrad (1961), 1958(6), 72-82, database is CAplus.

Compounds containing Si-H bonds undergo addition reactions with olefins in a steel autoclave at temperatures of 260-300° and at 100-560 atm. with no other catalyst or initiator. Products are of the type Si(olefin)_nH (I), where n = 1-6. The autoclave itself does not appear to act as an initiator by reacting with Cl in chlorosilanes to give metal chlorides, since a similar reaction takes place when no Cl is present in the Si compound The reaction appears to proceed by a free radical route. The influence of temperature and olefin concentration on the product mixture was investigated. With increasing C₂H₄ concentration, where n = 1, the yield of I decreases; where n = 2 or 3, remains the same; where n >3, increases. Increasing temperature in range 285°-400°, with constant (2:1) excess of olefin in mixture, increased the yield of I where n = 1 at expense of n >3; where n = 2 or 3, the yield varied little. For comparison, the reaction was carried out in the presence of certain metallic chlorides. H₂PtCl₆ catalyzes addition reaction at room temperature, but chlorides of Zr, Ti, and Sn, require temperatures ≃200° and give less satisfactory conversion. This reaction appears to proceed via polar intermediates.

Khim. i Prakt. Primenenie Kremneorgan. Soedin., Tr. Konf., Leningrad published new progress about 14799-94-1. 14799-94-1 belongs to chlorides-buliding-blocks, auxiliary class Aliphatic Chain, name is Dichloro(hexyl)(methyl)silane, and the molecular formula is C7H16Cl2Si, HPLC of Formula: 14799-94-1.

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

Fadeev, Alexander Y. published the artcileSelf-Assembly Is Not the Only Reaction Possible between Alkyltrichlorosilanes and Surfaces: Monomolecular and Oligomeric Covalently Attached Layers of Dichloro- and Trichloroalkylsilanes on Silicon, SDS of cas: 14799-94-1, the publication is Langmuir (2000), 16(18), 7268-7274, database is CAplus.

Si-supported alkylsiloxane layers were prepared by reaction of alkylmethyldichlorosilanes and alkyltrichlorosilanes with Si wafers under two conditions: (1) in the vapor phase and (2) in toluene in the presence of ethyldiisopropylamine. Covalent attachment of di- and trichlorosilanes to the surface of Si/Si oxide through Si_S-O-Si bonds occurs for the amine-catalyzed reactions. This sets apart this reaction from the self-assembly process that occurs in the reaction between certain trichlorosilanes and hydrated SiO₂ with no amine present. The thickness of the layers formed from dichloro- and trichlorosilanes (as assessed by ellipsometry) is on the order of the single mol. sizes and increases gradually with alkyl chain length. The thickness values are considerably smaller (by a factor of ∼0.75) than the length of the fully stretched alkyl chain, which argues for disordered structures of the monolayers. Dynamic advancing and receding contact angles for H₂O, methylene iodide, and hexadecane argue for interaction between the probe fluids and accessible silanol groups (Si-OH) on the surface. H₂O contact angles increase with alkyl chain length and level at θ_A/θ_R ≃103°/∼90° for relatively long alkyl chains (approx. C₆ and longer), indicating that these surfaces project disordered Me and methylene groups toward the probe fluid. N-Hexadecane and methylene iodide contact angles show more complex behavior, which is discussed. The vapor-phase reaction of di- and trichlorosilanes with Si wafers yields surfaces that depend dramatically on the alkyl chain of the silane. Alkylsilanes with short and medium chains form polymeric grafted layers with thicknesses ranging from a few nanometers for dichlorosilanes up to tens of nanometers for trichlorosilanes. The authors suggest a mechanism that involves polycondensation of chlorosilanes into 3-dimensional alkylsiloxanes in the presence of adsorbed H₂O. Dynamic advancing and receding contact angles of H₂O, methylene iodide, and hexadecane on these surfaces are consistently higher than for surfaces prepared in the liquid phase. Alkylsilanes with long alkyl moieties yield approx. monomol. layers that exhibit wettabilities similar to those for surfaces prepared in the liquid phase.

Langmuir published new progress about 14799-94-1. 14799-94-1 belongs to chlorides-buliding-blocks, auxiliary class Aliphatic Chain, name is Dichloro(hexyl)(methyl)silane, and the molecular formula is C7H16Cl2Si, SDS of cas: 14799-94-1.

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