Crystal structure of (3-carboxypropyl)triphenylphosphonium hexafluoridophosphate

Abstract

In the title molecular salt, C22H22O2P+·PF6−, the side chain of the cation adopts ananti–gaucheconformation [P—C—C—C and C—C—C—C torsion angles = −179.11 (10) and −77.18 (16)°, respectively]. In the crystal, the cations are linked into carboxylic acid inversion dimers by pairs of O—H...O hydrogen bonds. Weak C—H...F and C—H...(F,F) hydrogen bonds connect the components into a three-dimensional network, but there are no aromatic π–π stacking interactions.