2-[(2,4,4,6,6-Pentachloro-1,3,5,2λ5,4λ5,6λ5-triazatriphosphinin-2-yl)azanidyl]pyridinium

Abstract

The title compound, C5H5Cl5N5P3, crystallizes as a zwitterion in which the pyridine N atom is protonated. An S(6) ring motif is formed via an intramolecular C—H...N hydrogen bond. The triazatriphosphinine ring adopts an envelope conformation, with one N atom displaced by 0.145 (1) Å from the other atoms. In the crystal, N—H...N and C—H...N hydrogen bonds link the molecules into centrosymmetric dimers containing one R22(7) ring motif and two R22(8) ring motifs.