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| - Tetraethyl orthosilicate is the chemical compound with the formula Si(OC2H5)4. Often abbreviated TEOS, this molecule consists of four ethyl groups attached to SiO44- ion, which is called orthosilicate. As an ion in solution, orthosilicate does not exist. Alternatively TEOS can be considered to be the ethyl ester of orthosilicic acid, Si(OH)4. It is a prototypical alkoxide. TEOS is a tetrahedral molecule. Many analogues exist, and most are prepared by alcoholysis of silicon tetrachloride: SiCl4 + 4 ROH → Si(OR)4 + 4 HCl where R = alkyl such as methyl, ethyl, propyl, etc.
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ImageFileR
| - Tetraethyl orthosilicate 3D.png
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dbkwik:ceramica/pr...iPageUsesTemplate
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ImageFileL
| - Tetraethyl orthosilicate.svg
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OtherNames
| - tetraethyl orthosilicate; ethyl silicate; silicic acid, tetraethyl ester; silicon ethoxide; TEOS
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abstract
| - Tetraethyl orthosilicate is the chemical compound with the formula Si(OC2H5)4. Often abbreviated TEOS, this molecule consists of four ethyl groups attached to SiO44- ion, which is called orthosilicate. As an ion in solution, orthosilicate does not exist. Alternatively TEOS can be considered to be the ethyl ester of orthosilicic acid, Si(OH)4. It is a prototypical alkoxide. TEOS is a tetrahedral molecule. Many analogues exist, and most are prepared by alcoholysis of silicon tetrachloride: SiCl4 + 4 ROH → Si(OR)4 + 4 HCl where R = alkyl such as methyl, ethyl, propyl, etc.
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