(3-Chloro­prop­yl)triphenyl­phospho­nium bromide

The title compound, C₂₁H₂₁ClP⁺Br⁻, is the bromide salt of a mixed aryl-alkyl phospho­nium cation. C–P–C angles span a range of 107.20 (10)–111.18 (10)°. The non-H atoms of the 3-chloro­propyl group adopt a staggered conformation [C–C–C–Cl torsion angle: −72.0 (3)°]. In the crystal, C—H...Br contacts connect the entities of the title compound into a double zigzag chain along b. These chains are linked into a supra­molecular layer lying parallel to (10-1) by C—H...π inter­actions.