Crystal structure and Hirshfeld surface analysis of 3-octyl-4-oxo-2,6-bis-(3,4,5-tri-meth-oxy-phen-yl)piperidinium chloride.

The title compound, C(31)H(46)NO(7)(+)·Cl(-), was synthesized by a one-pot Mannich condensation reaction. In the mol-ecule, the piperidinone ring adopts a chair conformation, and the trimeth-oxy-substituted benzene rings and octyl chain are arranged equatorially. In the crystal, centrosymmetric dimers are linked into layers parallel to (011) by N-H⋯Cl and C-H⋯Cl hydrogen bonds. A Hirshfeld surface analysis indicates that the most important contributions for the crystal packing are O⋯H (20.5%) inter-actions followed by C⋯H (7.8%), Cl⋯H (5.5%), C⋯C (1.2%), C⋯O (0.5%) and Cl⋯O (0.4%) inter-actions.