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Silicon tetrafluoride
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<p>Silicon tetrafluoride or tetrafluorosilane is a <a href="/facts/Chemical_compound/37FXqqtv">chemical compound</a> with the formula <a href="/facts/Silicon/cgWx0hdr">Si</a><a href="/facts/Fluorine/YUV0Fb8m">F</a>4. This colorless gas is notable for having a narrow liquid range: its boiling point is only 4 °C above its melting point. It was first prepared in 1771 by <a href="/facts/Carl_Wilhelm_Scheele/kcKBwyXa">Carl Wilhelm Scheele</a> by dissolving silica in <a href="/facts/Hydrofluoric_acid/wdXqu4bE">hydrofluoric acid</a>, and later synthesized by <a href="/facts/John_Davy_(chemist)/Ekt2X6je">John Davy</a> in 1812. It is a tetrahedral molecule and is corrosive. </p>