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], C26H29N2 +·C7H3N2O7 −, 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