Figure 3
The molecular column of (I), consisting of two hydrogen-bonded one-dimensional chains in the reverse orientation, showing the perpendicular distances between inversion-related pyrimidine rings. H atoms not involved in the motifs and the water molecules have been omitted for clarity. Atoms marked with asterisks (*), hashes (#) and dollar signs ($) are at the symmetry positions (x + 1, y, z), (x − 1, y, z) and (−x + 3, −y, −z + 1), respectively. |