Crystal structure of a hydrate of 1,3,5-substituted 2,4,6-tri-alkyl-benzene bearing hy-droxy-methyl and pyridinyl-amino groups.

The asymmetric unit of the title compound, (3,5-bis-{[(4,6-di-methyl-pyridin-2-yl)amino]-meth-yl}-2,4,6-tri-ethyl-phen-yl)methanol sesquihydrate, C29H40N4O·1.5H2O, 1·1.5H2O, contains two crystallographically independent mol-ecules (I and II) and three water mol-ecules [(1)2(H2O)3]. These components are connected by O-H⋯O and N-H⋯O hydrogen bonds to form a 2:3 complex. Within this structural unit, the three water mol-ecules and one of the hy-droxy-methyl O atoms create a strongly distorted eight-membered R 4 3(8) supra-molecular synthon. In addition, the three water mol-ecules form a structure unit that can be defined as a D3 water cluster. In the crystal, neighbouring 2:3 complexes are linked by N-H⋯O and O-H⋯N hydrogen bonds into infinite strand-like aggregates extending along the a-axis direction. The pattern of non-covalent inter-molecular bonding is completed by numerous C-H⋯π arene inter-actions. The crystal contains highly disordered solvent mol-ecules that could not be refined to an acceptable level. Their contribution to the diffraction intensities was therefore removed using the BYPASS routine in OLEX2, and these solvent mol-ecules were excluded from the reported mol-ecular weight and crystal density.