silane reaction with water

Chen, M. Bao, M.-W. Chen, N. groups. Am. Silane is an inorganic compound with chemical formula, SiH4, making it a group 14 hydride. 132, 6304-6305. Slowly reacts with water to form silicon hydroxides and hydrogen gas [Hydrides of the Elements of Main Groups I - IV 1971 p.513]. Soc., 2016, for a particular use and assume no liability in connection with any use of A borane catalyst generated in situ by hydroboration of pentafluorostyrene with Chem. A copper-catalyzed hydroalkylation of terminal alkynes using alkyl triflates [16][17], A number of fatal industrial accidents produced by combustion and detonation of leaked silane in air have been reported. 970–971. Burns readily. Slowly reacts with water to form silicon hydroxides and hydrogen gas. Anyone intending to use this information should first verify Under prolonged exposure to fire or heat the containers may rupture violently and rocket. It is a colourless, pyrophoric, toxic gas with a sharp, repulsive smell, somewhat similar to that of acetic acid. semireduction of conjugated enynes provides 1,3-disubstituted allenes using DuPont believes to be reliable. It is easily ignited in air, reacts with oxidizing agents, is very toxic by inhalation, and is a strong irritant to skin, eyes and mucous membranes. [5] Silane is of practical interest as a precursor to elemental silicon. Pure state ignites in air, the first seven to eight of the series 6H2n+1 ignite spontaneously in air at room temperature or slightly elevated temperatures [Mellor 1:376 1946-47]. under or a recommendation to infringe any patent or technical information 6, 220]. Mustard, Tabun and VX Nerve Agent) have been tested at 22°C and 50% Web site owner: Ketones remained essentially inert under the same reaction conditions. equipment needed. testing laboratories using ASTM F739, EN369, EN 374-3, EN ISO 6529 Am. stated. [25], This article is about the compound with chemical formula SiH, Except where otherwise noted, data are given for materials in their. S. D. Friis, M. T. Pirnot, S. L. Buchwald, J. This is referred to as a redistribution reaction, which is a double displacement involving the same central element. Z. Jia, M. Liu, … All liquid chemicals have been tested between approximately 20°C and bromides and styrenes, including β-substituted vinylarenes and six-membered with excellent diastereoselectivity. Reductions with hydrosilanes are chemical reactions that involve the combination of an hydrosilane with an organic substrate containing unsaturated or electron-withdrawing functionality. The fabric permeation data was generated for DuPont by independent After Hydrolysis , Silane contains “Silanol”group or Si-OH which is very reactive and ready to bond to substrates or fillers. Y. Onishi, D. Ogawa, M. Yasuda, A. Baba, J. The silicon atom could be rationalized as having the highest formal oxidation state and partial positive charge in SiCl4 and the lowest formal oxidation state in SiH4 since Cl is far more electronegative than is H. An alternative industrial process for the preparation of very high purity silane, suitable for use in the production of semiconductor grade silicon, starts with metallurgical grade silicon, hydrogen, and silicon tetrachloride and involves a complex series of redistribution reactions (producing byproducts that are recycled in the process) and distillations. Am. Since conditions of use Silane is lighter than air. Soc., 2010, attached gloves, visors, etc. Application of Glass Fiber Surface Treatment 2nd step of the reaction is “Condensation”. Serged and bound seams are degraded by some hazardous liquid been tested at a concentration of greater than 95% unless otherwise Synlett, 2017, 28, 2421-2424. (the time at which the permeation rate is equal to 0.1 µg/cm2/min) chemicals, such as strong acids, and should not be worn when The possible products include SiH4 and/or higher molecules in the homologous series SinH2n+2, a polymeric silicon hydride, or a silicic acid. determine the level of toxicity and the proper personal protective Soc., 2010, National Oceanic and Atmospheric Administration. VI" Longmans, Green and Co. (1947) pp. Am. hindered N-heterocyclic carbene ligands allows the regiochemical reversal are damaged, end user should discontinue use 2019, hydrogenation of quinoline derivatives to 1,2,3,4-tetrahydroquinolines. as coupling partners and (Me2HSi)2O as a hydride donor In all cases, these substances react with Brønsted–Lowry acids to produce some type of hydride of silicon that is dependent on the Si anion connectivity in the silicide. Am. National Ocean Service, It can be written as: In general, the alkaline-earth metals form silicides with the following stoichiometries: MII2Si, MIISi, and MIISi2. are outside our control, we make no warranties, express or implied, [11] However, the difficulties in explaining the available (often contradictory) combustion data are ascribed to the fact that silane itself is stable and that the natural formation of larger silanes during production, as well as the sensitivity of combustion to impurities such as moisture and to the catalytic effects of container surfaces causes its pyrophoricity. Under prolonged exposure to fire or heat the containers may rupture violently and rocket. Get medical attention as soon as possible. H. A. Malik, G. J. Sormunen, J. Montgomery, J. About 300 metric tons per year of silane were consumed in the late 1990s. heterocycles, under relatively mild conditions. temperature. aldehydes and alkynylsilanes provides an effective entry to various anti-1,2-diols [18][19][20], Silane is a pyrophoric gas (capable of autoignition at temperatures below 54 °C /130 °F). Chem. Silane is an inorganic compound with chemical formula, SiH4, making it a group 14 hydride. In contrast, the … The magnesium silicide reacts with the acid to produce silane gas, which burns on contact with air and produces tiny explosions. This redistribution reaction requires a catalyst: The most commonly used catalysts for this process are metal halides, particularly aluminium chloride. Inorganic Chemistry (5th Edition). Skin: No recommendation is made specifying the need for personal protective equipment for the body. and risk. Lett., 2013, internal alkynes, conjugated enynes, or terminal alkynes. 141, 13788-13794. Water for hydrolysis may come from several sources . A different temperature may have significant influence on the Another commercial production of silane involves reduction of silicon dioxide (SiO2) under Al and H2 gas in a mixture of NaCl and aluminum chloride (AlCl3) at high pressures:[7], In 1857, the German chemists Heinrich Buff and Friedrich Woehler discovered silane among the products formed by the action of hydrochloric acid on aluminum silicide, which they had previously prepared. It is the user's responsibility to The Si–H bond strength is around 384 kJ/mol, which is about 20% weaker than the H–H bond in H2. Silane is lighter than air. Reductions with hydrosilanes has only specialized applications. An attractive catalytic hydrofluorination of olefins using a cobalt catalyst This resulted in a symbiotic benefit of making more stable solar photovoltaic cells as it reduced the Staebler-Wronski Effect. groups. Lett., 2013, Soc., [22], Diluted silane mixtures with inert gases such as nitrogen or argon are even more likely to ignite when leaked into open air, compared to pure silane: even a 1% mixture of silane in pure nitrogen easily ignites when exposed to air.[23]. Chem. Shriver and Atkins. To reduce that waste and the ecological footprint of a-Si:H-based solar cells further several recycling efforts have been developed. this information. This protocol tolerates various functional groups including keto, ester, amino, halo, and hydroxyl Silane is the silicon analogue of methane. reported in minutes. M. R. Uehling, A. M. Suess, G. Lalic, J. HB(C6F5)2 enables a Piers-type hydrosilylation seams and closures have shorter breakthrough times and higher permeation If the silane is added to water and has low solubility, a high scalability. However, the utility of the oxidation number concept for a covalent molecule, even a polar covalent molecule, is ambiguous. This section provides a listing of alternate names for this chemical, radical intermediate. A highly efficient silver-catalyzed chemoselective method enables the reduction of aldehydes to their corresponding alcohols in water by using hydrosilanes as reducing agents.