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).