2,4-Diamino-6-methyl-1,3,5-triazin-1-ium hydrogen oxalate

Abstract

The title compound, C4H8N5 +·C2HO4 -, was obtained from the reaction of oxalic acid and 2,4-diamino-6-methyl-1,3,5-triazine. The protonated triazine ring is essentially planar with a maximum deviation of 0.035 (1) Å, but the hydrogen oxalate anion is less planar, with a maximum deviation of 0.131 (1) Å for both carbonyl O atoms. In the crystal, the ions are linked by inter-molecular N - H⋯O, N - H⋯N, O - H⋯O and C - H⋯O hydrogen bonds, forming a three-dimensional network. Weak π-π [centroid-centroid distance = 3.763 Å] and C - O⋯π inter-actions [O⋯centroid = 3.5300 (16) Å, C - O⋯centroid = 132.19 (10)°] are also present. Show more