4,4′,6,6′-Tetramethyl-2,2′-bipyrimidine hexahydrate

In the title compound, C12H14N4·6H2O, the two pyrimidine rings make a dihedral angle of 5.285 (6)°. Intermolecular O—H...O hydrogen bonds link the six water molecules, generating edge-fused four-, five- or six-membered ring motifs and forming two-dimensional sheets. The sheets are stabilized by the formation of O—H...N hydrogen bonds between the water molecules and the bipyrimidine molecules, resulting in a three-dimensional network.