Melaminium formate

Crystals of a new melaminium salt, 2,4,6-tri­amino-1,3,5-triazin-1-ium formate, C₃H₇N₆⁺·CHO₂⁻, consist of singly protonated melaminium residues and formate anions. The components are linked by hydrogen bonds into a three-dimensional framework structure. The melaminium residues are interconnected by two pairs of N—H...N hydrogen bonds into chains in the form of stacks, with a distance of 3.34 (1) Å between the triazine rings, clearly indicating π–π interactions. The chains of melaminium residues are interconnected via N—H...O hydrogen bonds by the formate anions, forming a non-covalent superstructure.