Silicon inorganic

Substances which have a deleterious effect on the taste and/or smell of the products for human consumption derived from the aquatic environment Toxic or persistent organic compounds of silicon Inorganic compounds of phosphorus and elemental phosphorus Non-persistent mineral oils and hydrocarbons of petroleum origin Cyanides, fluorides... 

Neal 2691 dissolved dimethylpolysiloxanes in MIBK, and analyzed the solution for silicon. Inorganic silicons commonly found in food and 1 % cottonseed oil did not interfere. Jordan 2731 extracted lead from food into xylene rather... 

When the divalent cation becomes too large for the spinel structure to be adopted (e.g. Ca +, Ba +, andPb +), atridymite (Si02) stmcture is obtained that has the divalent cation in the interstices see Silicon Inorganic Chemistry). These are synthesized by reaction of the oxides at temperatures over 800 °C. The barium and calcium derivatives are used in ceramics and refractories. In particular, BaAl204 is used... 

Aluminosilicates form an extensive family of compounds that include layered compounds (such as clays, talc, and micas), 3-D compounds, (e.g. feldspars, such as granite), and microporous solids known as molecular sieves. The structural diversity of these materials is contributed to by aluminum s ability to occupy both tetrahedral and octahedral holes as it also does in y-Al203. Thus, aluminum substitution for silicon in silicate minerals may lead to replacement of silicon in tetrahedral sites or the aluminum can occupy an octahedral environment external to the silicate lattice. Replacement of Si with Al requires the presence of an additional cation such as H+, Na+, or 0.5 Ca + to balance the charge. These additional cations have a profound effect on the properties of the aluminosilicates. This accounts for the many types of layered and 3-D structures (see Silicon Inorganic Chemistry). 

Interpolation or intercalation (see Intercalation Chemistry) is said to occur when additional species are placed into a host stmcture to change either composition or properties. At one extreme, intercalation can refer to the insertion of gnest molecnles into cage stmctures such as that of the zeolites (see Zeolites), or between the layers of laminated compounds snch as the clays (see Silicon Inorganic Chemistry). At the other extreme, the insertion of small atoms snch as C or N into metal phases to form interstitial alloys (see Alloys Carbides Transition Metal Solid-state Chemistry Nitrides Transition Metal Solid-state Chemistry), is inclnded in the category. A large variety of stmctures can be found in snch materials, and... 

Germaninm Organometallic Chemistry Lead Inorganic Chemistry Silicon Inorganic Chemistry Tin Inorganic Chemistry. 

The second example comes from solid-state chemistry, and the coimection with cluster chemistry is less obvious. Despite this, it is an excellent example of how E/M variation can lead to systematic variation in structure and, consequently, to properties. Although the example is taken from solid-state metal borides, the silicides see Silicon Inorganic Chemistry) and phosphides (see Phosphides Solid-state Chemistry) could have been used. 

Diarylsilanes react with [Rh(/u.-H)(dippe)]2 to form [Rh(/x-SiAr2)(dippe)]2, but with dimethylsilane the product is (32), which is a catalyst precursor for the dimerization of diphenylsilane (see Silicon Inorganic Chemistry). The initial reaction of [Cp2Rh2(/u.-CH2)2(M-SH)]BPli4 with dimethylacetylene dicarboxylate is the insertion of one aUcyne into the S-H bond but the second equivalent of aUcyne couples with both methylene groups to form (33)." ... 

Electronic Stracture of Solids Germanium Inorganic Chemistry Semiconductor Interfaces Silicon Inorganic Chemistry. 

Isoelectronic with monovalent group 13 molecules are divalent molecules of group 14 elements see Germanium Inorganic Chemistry Silicon Inorganic Chemistry and Silicon Organosilicon Chemistry). The most populous class of these species are the silylenes, divalent compounds of silicon, ft is not appropriate here to provide a detailed review of silicon chemistry since such material is more expertly and comprehensively covered elsewhere. However, it is pertinent to this discussion to make some mention of silylene chemistry. ... 

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