antifluorite structure

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A crystal structure for ionic compounds of the type M2X, which is the same as the fluorite (CaF2) structure except that the positions of the anions and cations are reversed, i.e. the cations occupy the F sites and the anions occupy the Ca2+ sites. Examples of the antifluorite structure are given by K2O and K2S. See fluorite structure.

Subjects: Chemistry.

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