Cinnarizinium 3,5-dinitrosalicylate

Abstract

The title compound [systematic name: 4-diphenylmethyl-1-(3-phenylprop-2-en-1-yl)-piperazin-1-ium 2-carboxy-4,6-dinitrophenolate], C 26 H 29 N 2 + ·C 7 H 3 N 2 O 7 − , is the dinitrosalicylate salt of a tertiary amine. Deprotonation of the carboxylic acid group occurred on the phenolic hydroxy group. The diazacyclohexane ring adopts a chair conformation. Intramolecular O—H...O and intermolecular C—H...O and N—H...O hydrogen bonds are observed. The N—H...O hydrogen bonds are bifurcated at the H atom and connect the cinnarizinium and 3,5-dinitrosalicylate ions together. Intermolecular C—H...O hydrogen bonds connect the components into layers perpendicular to the crystallographic a axis.