2-[(2-Chloro­phen­yl)(hy­droxy)meth­yl]phenol

In the title compound, C₁₃H₁₁ClO₂, the dihedral angle between the mean planes of the 2-chloro­phenyl and phenol rings is 87.4 (9)°. The methyl hy­droxy group lies nearly perpendicular to the plane of its attached benzene ring [O—C—C—C torsion angle = 84.3 (3)°]. The two hy­droxy groups lie on the same side of the mol­ecule and are in a slightly twisted gauche conformation [O—C—C—O torsion angle = 77.1 (8)°] to each other. In the crystal, O—H...O hydrogen bonds between nearby methyl­hydroxy groups form dimers in alternating pairs aligned diagonally along the b axis. A view along the c axis reveals a hexa­meric aggregate mediated by a ring of six O—H...O hydrogen bonds generating an R₆⁶(12) motif loop.

Carbinoxaminium dipicrate

In the dication of the title salt, C₁₆H₂₁ClN₂O²⁺·2C₆H₂N₃O₇⁻ [systematic name: 2-{(4-chloro­phen­yl)[2-(di­methyl­aza­nium­yl)eth­oxy]meth­yl}pyridinium bis­(2,4,6-tri­nitro­phenolate), contains a carbinoxaminium dication and two picrate anions, which are held together through inter­molecular N—H...O hydrogen bonds. In the dication, the two aromatic rings form a dihedral angle of 80.1 (1)°. In the two independent picrate anions, the nitro groups are twisted from the benzene plane, the largest dihedral angle in each ion being 42.8 (1) and 81.1 (5)°. In the crystal, in addition to the classical N—H...O hydrogen bonds, weak C—H...O hydrogen bonds and π–π inter­actions between the aromatic rings of the anions [centroid–centroid distances of 3.5768 (15) and 3.7436 (15) Å] help to establish the packing.