6,6′-Di-tert-butyl-4,4′-dimethoxy-2,2′-[1,3-diazinane-1,3-diylbis(methylene)]diphenol 0.19-hydrate

In the title hexahydropyrimidine derivative, C28H42N2O4 center dot 0.19H(2)O, the 1,3-diazinane ring has a chair conformation with a diequatorial substitution. The asymmetric unit contains one half-organic molecule and a solvent water molecule with occupany 0.095. The molecule lies on a mirror plane perpendicular to [010] which passes through the C atoms at the 2- and 5-positions of the heterocyclic system. The partially occupied water molecule is also located on this mirror plane. The dihedral angle between the planes of the aromatic rings is 17.71 (3)degrees. Two intramolecular O-H center dot center dot center dot N hydrogen bonds with graph-set motif S(6) are present. No remarkable intermolecular contacts exist in the crystal structure.