Opipramolium fumarate

Abstract

In the crystal structure of the title salt {systematic name: 4-[3-(5H-dibenz[b,f]azepin-5-yl)propyl]-1-(2-hydroxyethyl)piperazin-1-ium (2Z)-3-carboxyprop-2-enoate}, C23H30N3O+·C4H3O4−, the piperazine group in the opipramol cation is protonated at only one of the N atoms. In the cation, the dihedral angle between the two benzene rings is 53.5 (6)°. An extensive array of intermolecular O—H...O, O—H...N and N—H...O hydrogen bonds and weak intermolecular N—H...O, C—H...O and C—H...π interactions dominate the crystal packing.