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Figure 1 The molecular structures of the components of (I) showing the atomic numbering scheme used. Displacement ellipsoids are drawn at the 50% probability level and hydrogen atoms have been omitted for clarity. Each 1,4-dioxane molecule is disposed about a centre of inversion. Symmetry codes: (i) = 1-x, 1-y, −z and (ii) = 1-x, −y, −z. |