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Structure of the anion. In chemistry, orthosilicate is the anion SiO 4− 4, or any of its salts and esters. It is one of the silicate anions. It is occasionally called the silicon tetroxide anion or group. [1] Orthosilicate salts, like sodium orthosilicate, are stable, and occur widely in nature as silicate minerals, being the defining feature ...
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 ...
Orthosilicic acid (/ ˌ ɔːr θ ə s ɪ ˈ l ɪ s ɪ k /) is an inorganic compound with the formula Si(O H) 4.Although rarely observed, it is the key compound of silica and silicates and the precursor to other silicic acids [H 2x SiO x+2] n.
The anhydrous solid has the triclinic crystal structure, with space group P 1 (a = 5.8007(8) ... Sodium orthosilicate, Na 4 SiO 4; References
n, the anion is a tridimensional network of tetrahedra in which all oxygen corners are shared. If all tetrahedra had silicon centers, the anion would be just neutral silica [SiO 2] n. Replacement of one in every four silicon atoms by an aluminum atom results in the anion [AlSi 3 O − 8] n, whose charge is neutralized by the potassium cations K +.
Sodium orthosilicate is the chemical compound with the molecular formula Na 4 SiO 4. It is one of the sodium silicates, specifically an orthosilicate, formally a salt of the unstable orthosilicic acid H 4 SiO 4. [2] [3] [4]
In the anhydrous solid, the metasilicate anion is actually polymeric, consisting of corner-shared {SiO 4} tetrahedra, and not a discrete SiO 3 2− ion. [ 4 ] In addition to the anhydrous form, there are hydrates with the formula Na 2 SiO 3 · n H 2 O (where n = 5, 6, 8, 9), which contain the discrete, approximately tetrahedral anion SiO 2 (OH ...
Calcium-silicate passive fire protection board being clad around steel structure in order to achieve a fire-resistance rating. Calcium silicate is commonly used as a safe alternative to asbestos for high-temperature insulation materials. Industrial-grade piping and equipment insulation is often fabricated from calcium silicate.