A 1:1 cocrystal of 4-(dimethyl­amino)­benzaldehyde and 6-phenyl-1,3,5-triazine-2,4-diamine

The crystal structure of the title compound, C₉H₁₁NO·C₉H₉N₅, contains one mol­ecule of each component in the asymmetric unit. Approximately planar clusters of four mol­ecules are formed by N-H...N and N-H...O hydrogen bonds, and further N-H...N hydrogen bonds link adjacent clusters to form pleated ribbons. [pi]-[pi] inter­actions are found between triazine and aldehyde benzene rings in different clusters, generating stacks along the monoclinic b axis. The intra­molecular geometry of the two components is similar to that found in other crystal structures containing these mol­ecules. Both mol­ecules are approximately planar, except for methyl H atoms, with a small twist about the C-C bond linking the phenyl and triazine rings.