organic compounds
Open access
In the title molecular salt, C19H18BrClN3O2+·Cl−, the dihedral angles between the pyrimidine ring and the chlorobenzene and bromobenzene rings are 72.4 (2) and 45.5 (2)°, respectively. The dihedral angle between the chlorobenzene and bromobenzene rings is 27.5 (2)°. The conformation of the molecule is stabilized by an intramolecular C—HO interaction. In the crystal, the anion and cation are linked by an N—HCl hydrogen bond. Pairs of weak C—HO and C—HCl hydrogen bonds form inversion dimers. Further N—HCl hydrogen bonds form R21(6) motifs and link the dimers into chains along [101]. BrCl short contacts [3.482 (2) Å] interlink the hydrogen-bonded chains along the b-axis direction.