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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 11) planes.


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