Benzene-1,3,5-tricarb­oxy­lic acid–5-(4-pyrid­yl)pyrimidine (1/1)

In the pyrimidine mol­ecule of the title compound, C₉H₇N₃·C₉H₆O₆, the pyridine ring is oriented at 33.26 (11)° with respect to the pyrimidine ring. In the benzene-1,3,5-tricarb­oxy­lic acid mol­ecule, the three carb­oxy groups are twisted by 7.92 (9), 8.68 (10) and 17.07 (10)° relative to the benzene ring. Classical O—H...N and O—H...O hydrogen bonds and weak C—H...O and C—H...N hydrogen bonds occur in the crystal structure.