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A silicon–oxygen bond (Si−O bond) is a chemical bond between silicon and oxygen atoms that can be found in many inorganic and organic compounds. [1] In a silicon–oxygen bond, electrons are shared unequally between the two atoms, with oxygen taking the larger share due to its greater electronegativity.
[1] [2] [3] Introduced by Gilbert N. Lewis in his 1916 article The Atom and the Molecule, a Lewis structure can be drawn for any covalently bonded molecule, as well as coordination compounds. [4] Lewis structures extend the concept of the electron dot diagram by adding lines between atoms to represent shared pairs in a chemical bond.
Silicon dioxide, also known as silica, is an oxide of silicon with the chemical formula SiO 2, commonly found in nature as quartz. [5] [6] In many parts of the world, silica is the major constituent of sand.
Phase diagram of the Fe–Si system. Many metal silicides are known, most of which have formulas that cannot be explained through simple appeals to valence: their bonding ranges from metallic to ionic and covalent. Some known stoichiometries are M 6 Si, M 5 Si, M 4 Si, M 15 Si 4, M 3 Si, M 5 Si 2, M 2 Si, M 5 Si 3, M 3 Si 2, MSi, M 2 Si 3, MSi ...
Three different crystallographic forms exist. Other binary silicon nitrogen compounds have been proposed (SiN, Si 2 N 3, Si 3 N) [86] and other SiN compounds have been investigated at cryogenic temperatures (SiN 2, Si(N 2) 2, SiNNSi). [87] Silicon tetraazide is an unstable compound that easily detonates. The phase diagram with phosphorus shows ...
Structure of the orthosilicate anion SiO 4− 4. A silicate is any member of a family of polyatomic anions consisting of silicon and oxygen, usually with the general formula [SiO (4-2x)− 4−x] n, where 0 ≤ x < 2. The family includes orthosilicate SiO 4− 4 (x = 0), metasilicate SiO 2− 3 (x = 1), and pyrosilicate Si 2 O 6− 7 (x = 0.5 ...
Silicon disulfide is the inorganic compound with the formula Si S 2. Like silicon dioxide , this material is polymeric , but it adopts a 1-dimensional structure quite different from the usual forms of SiO 2 .
Silicon monoxide is the chemical compound with the formula SiO where silicon is present in the oxidation state +2. In the vapour phase, it is a diatomic molecule. [1] It has been detected in stellar objects [2] and has been described as the most common oxide of silicon in the universe.