Orphenadrinium dihydrogen citrate

Abstract

In the title salt, C18H24NO+·C6H7O7−, the dihedral angle between the benzene rings in the cation is 74.2 (5)°. In the crystal, anion–anion O—H...O hydrogen bonds and weak O—H...O interactions form infinite chains along [100]. Between these chains, cation–anion N—H—O hydrogen bonds are observed, forming an alternate pattern of cation and anion layers and leading to a two-dimensional network parallel to (100).