Hydrogenated silicon compounds

The electronics market uses sihcon as trichlorosilane, which is decomposed with hydrogen at high temperatures to produce semiconductor-grade sihcon (see Silicon compounds). 

Acetyl hypofluorite is very effective m the fluorination of the aryl-metal (Hg, Ge, or Si) bond, but yields are frequently low. With aryl silicon compounds some competition exists for replacement of an aromatic hydrogen [5i, 52, 55, 54] (equations 25-27). Fluoroxytrifluoromethane fluorinates p-methoxypheny 1 mercuric acetate to givep-fluoroanisole in 86% yield [52]... 

Silicon, like carbon, is relatively inactive at ordinary temperatures. But, when heated, it reacts vigorously with the halogens (fluorine, chlorine, bromine, cmd iodine) to form halides and with certain metals to form silicides. It is unaffected by all acids except hydrofluoric. At red heat, silicon is attacked by water vapor or by oxygen, forming a surface layer of silicon dioxide. When silicon and carbon are combined at electric furnace temperatures of 2,000 to 2,600 °C (3,600 to 4700 °F), they form silicon carbide (Carborundum = SiC), which is an Importeint abrasive. When reacted with hydrogen, silicon forms a series of hydrides, the silanes. Silicon also forms a series of organic silicon compounds called silicones, when reacted with various organic compounds. 

Contact with liquid hydrogen fluoride causes violent evolution of silicon tetraflu-oride. (The same is probably true of metal silicides and other silicon compounds generally.)... 

Although carbon and silicon both belong to the same group of periodic table and many of the silicon compounds resemble carbon compounds, but the chemical reactivity of silicon in organosilicon compounds is more comparable to that of hydrogen because many nucleophilic displacements at... 

Deposition profile was then followed by an infrared study. Deposition of silicon alkoxlde removed Isolated sllanol at 3745 cm selectively, while that of hydrogen-bonded at 3600 cm was kept unaltered, as shown in Fig. 2a, b. Methyl group of surface residue of silicon compound was seen simultaneously with the disappearance of isolated sllanol. Upon reaction of the surface deposited species with water, the stretch bands of the methyl group disappeared, and the absorption of Isolated sllanol was recovered completely or incompletely, depending upon the kind of zeolite and metal oxide. 

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