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|Section2= |Section3= |Section7= |Section8= }} Silicon tetrafluoride or Tetrafluorosilane is the chemical compound with the formula SiF4. This tetrahedral molecule is notable for having a remarkably narrow liquid range (its boiling point is only 4 °C above its melting point). It was first synthesized by John Davy in 1812. ==Preparation== is a by-product of the production of phosphate fertilizers, resulting from the attack of HF (derived from fluorapatite protonolysis) on silicates. In the laboratory, the compound is prepared by heating above 300 °C, whereupon the solid releases volatile , leaving a residue of . The required is prepared by treating aqueous hexafluorosilicic acid with barium chloride.〔Hoffman, C. J.; Gutowsky, H. S. "Silicon Tetrafluoride" Inorganic Syntheses McGraw-Hill: New York, Volume 4, pages 145-6, 1953.〕 The corresponding is prepared analogously, except that the thermal "cracking" requires 700 °C.〔Hoffman, C. J.; Gutowsky, H. S. "Germanium Tetrafluoride" Inorganic Syntheses McGraw-Hill: New York, Volume 4, pages 147-8, 1953.〕 can also be created by placing silicon dioxide in hydrofluoric acid using the following equation: : 4HF + SiO2 → SiF4 + 2H2O 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「silicon tetrafluoride」の詳細全文を読む スポンサード リンク
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