Acta Cryst. (2012). E68, o3415-o3416
[ doi:10.1107/S1600536812046338 ]

4,6-Dimethoxy-2-(methylsulfanyl)pyrimidine-4-hydroxybenzoic acid (1/1)

K. Thanigaimani, A. Farhadikoutenaei, S. Arshad, I. A. Razak and K. Balasubramani

Abstract: The base molecule of the title co-crystal, C₇H₁₀N₂O₂S·C₇H₆O₃, is essentially planar, with a maximum deviation of 0.0806 (14) Å for all non-H atoms. The acid molecule is also nearly planar, with a dihedral angle of 8.12 (14)° between the benzene ring and the carboxy group. In the crystal, the acid molecules form an inversion dimer through a pair of O-HO hydrogen bonds with an R₂²(8) ring motif. The pyrimidine molecules are linked on both sides of the dimer into a heterotetramer via O-HN and C-HO hydrogen bonds with R₂²(8) ring motifs. The heterotetramers are further linked by weak C-HO hydrogen bonds, forming a tape structure along [1-10].

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