9-[(2-Hydroxybenzylidene)amino]-11-(2-hydroxyphenyl)-10, 13-diphenyl-8-oxa-12-azoniatricyclo[7.3.1.0^2,7]trideca-2(7),3,5- triene acetate ethanol disolvate

The title compound, C₃₆H₃₁N₂O ₃⁺,C₂H₃O₂^-·2C₂H₅OH, the product of a domino condensation of dibenzyl ketone with salicylic aldehyde and ammonium acetate, crystallized as the ethanol disolvate. The cation of the salt comprises a fused tricyclic system containing three six-membered rings (piperidine, dihydro-2H-pyran and benzene). The piperidine ring has the usual chair conformation, while the dihydropyran ring adopts a slightly distorted sofa conformation. In the crystal, there are six (one intra- and five intermolecular) independent hydrogen-bonding interactions: the intermolecular hydrogen bonds link the cations and anions and ethanol solvent molecules into ribbons along [001]. The ribbons are stacked along the a axis.