9-[(2-Hydroxybenzylidene)amino]-11-(2-hydroxyphenyl)-10,13-diphenyl-8-oxa-12-azoniatricyclo[7.3.1.02,7]trideca-2(7),3,5-triene acetate ethanol disolvate

The title compound, C36H31N2O3 +,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.

The title compound, C 36 H 31 N 2 O 3 + ,C 2 H 3 O 2 À Á2C 2 H 5 OH, 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.
Compound I crystallizes as diethanol solvate, i.e., C 38 H 34 N 2 O 5 . 2(C 2 H 6 O). The cation of the salt I comprises a fused tricyclic system containing three six-membered rings (piperidine, dihydro-2H-pyran and benzene) (Fig. 1). The piperidine ring has the usual chair conformation, while the dihydropyran ring adopts the slightly distorted sofa conformation (the C13 carbon atom deviates from the plane passed through the other atoms of the ring by 0.691 (2) Å). The phenyl substituents at the C10 and C11 carbon atoms occupy the sterically favorable equatorial positions, whereas the phenyl substituent at the C13 carbon atom is axially disposed.
The cation of I possesses four asymmetric centers at the C1, C10, C11, and C13 carbon atoms and can have potentially numerous diastereomers. The crystal of I is racemic and consists of enantiomeric pairs with the following relative configuration of the centers: rac-1S*,10R*,11S*, 13S*.
In the crystal, there are six (one intra-and five intermolecular) independent hydrogen bonding interactions (Table 1).
The intermolecular hydrogen bonds link the cations and anions of I and ethanol solvate molecules into ribbons along the direction [0 0 1] (Fig. 2). The crystal packing of the ribbons is stacked along the a axis.