4-(2,2′:6′,2′′-Terpyridyl)benzyltriphenylphosphonium bromide

Abstract

In the title compound, C40H31N3P+·Br−, the 4-(2,2′:6′,2"-terpyridine)benzyl group is in a slightly twisted conformation with a dihedral angle between the benzyl ring and the central pyridyl ring of 28.87 (5)°. The dihedral angles between the two outer and the inner pyridyl rings are only 4.04 (4) and 7.17 (5)°, respectively. The three phenyl groups are in a propeller configuration typical for this type of triphenyl­phospho­nium compound. The title compound exhibits large voids filled with diffuse solvent mol­ecules of 252.5 Å3 (13.9% of the unit-cell volume), which stretch as channels parallel to the c axis. The packing of the structural components is governed by C—H⋯Br hydrogen bonds, and C—H⋯π as well as π–π stacking inter­actions [the closest centroid-to-centroid distance is 3.843 (2) Å], to form a three-dimensional supra­molecular structure.