A supra­molecular ladder-like network from trimesic acid and pyrazine N,N′-dioxide

Cocrystallized trimesic acid (TMA) and pyrazine N,N′-dioxide (PNO) mol­ecules form strong O—H...O hydrogen bonds, but also important weak C—H...O and dipole–dipole inter­molecular inter­actions, to generate a densely packed three-dimensional network.