(IUCr) Crystallography Journals Online

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Acta Cryst. (2004). E60, o1781-o1782 [ doi:10.1107/S1600536804022251 ]

5-Fluorouracil-1,4-dioxane (4/1)

A. T. Hulme and D. A. Tocher

Abstract: A solvate of 5-fluorouracil with 1,4-dioxane, 4C₄H₃FN₂O₂·C₄H₈O₂, is reported. It crystallizes in the triclinic space group P $\overline 1$ . Two molecules of 5-fluorouracil are present in the asymmetric unit, together with one-half molecule of 1,4-dioxane, which lies on a centre of symmetry. In the crystal structure, ribbons of 5-fluorouracil molecules are joined by 1,4-dioxane-mediated interactions, forming sheets parallel to the (2 $\overline 1$ 1) planes.