Crystal structure and Hirshfeld surface analysis of the product of the ring-opening reaction of a di-hydro-benzoxazine: 6,6'-[(cyclo-hexyl-aza-nedi-yl)bis-(methyl-ene)]bis-(2,4-di-methyl-phenol).

In the title unsymmetrical tertiary amine, CHNO, which arose from the ring-opening reaction of a di-hydro-benzoxazine, two 2,4-di-methyl-phenol moieties are linked by a 6,6'-(cyclo-hexyl-aza-nedi-yl)-bis-(methyl-ene) bridge: the dihedral angle between the dimethyl-phenol rings is 72.45 (7)°. The cyclo-hexyl ring adopts a chair conformation with the exocyclic C-N bond in an equatorial orientation. One of the phenol OH groups forms an intra-molecular O-H⋯N hydrogen bond, generating an (6) ring, and a short intra-molecular C-H⋯O contact is also present. In the crystal, O-H⋯O hydrogen bonds link the mol-ecules into (10) chains propagating along the [100] direction. The Hirshfeld surface analysis of the title compound confirms the presence of these intra- and inter-molecular inter-actions. The corresponding fingerprint plots indicate that the most significant contacts in the crystal packing are H⋯H (76.4%), H⋯C/C⋯H (16.3%), and H⋯O/O⋯H (7.2%).