organic compounds
The title compound, C17H19Cl2N2OS+·Cl−, was synthesized from 2-acetothiophene, 1-(2,3-dichlorophenyl)piperazine and paraformaldehyde. In the cation, the thienyl ring is coplanar with the oxopropyl group. The protonated piperazine ring exhibits a chair conformation. In the crystal packing the cations are connected by C—HO and C—HCl hydrogen bonds.