Hexachlorodisiloxane

Template:Chembox Hexachlorodisiloxane is a chemical compound composed of chlorine, silicon, and oxygen. Structurally, it is the symmetrical ether of two trichlorosilyl groups, and can be synthesized via high-temperature oxidation of silicon tetrachloride: $$\genfrac{}{}{0ex}{}{2SiCl4+O2->[}{950-970{}^{\circ }\text{C}]2(SiCl3)2O+Cl2}$$

At room temperature, it is a colorless liquid that hydrolyzes upon exposure to water to give silicon dioxide and hydrochloric acid: $$(\mathrm{S}\mathrm{i}\mathrm{C}\mathrm{l}{\phantom{A}}_3){\phantom{A}}_2\mathrm{O}+3\mathrm{H}{\phantom{A}}_2\mathrm{O}⟶2\mathrm{S}\mathrm{i}\mathrm{O}{\phantom{A}}_2+6\mathrm{H}\mathrm{C}\mathrm{l}$$ Intense heat evinces a similar decomposition: $$\genfrac{}{}{0ex}{}{2(SiCl3)2O->[}{\Delta ]SiO2+3SiCl4}$$

Reaction with antimony trifluoride gives the analogous hexafluorodisiloxane.

Sources

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References

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