M. S. Siddegowda, R. J. Butcher, M. Akkurt, H. S. Yathirajan and B. Narayana.
1-(2-Hydroxyethyl)-4-[3-(2-trifluoromethyl-9H-thioxanthen-9-ylidene)propyl]piperazine-1,4-diium dichloride: the dihydrochloride salt of flupentixol, Acta Cryst. (2011). E67, o2079-o2080In the title compound, C23H27F3N2OS+·2Cl-, the piperazinediium ring adopts a chair conformation. The dihedral angle between the two outer aromatic rings of the 9H-thioxanthene unit is 40.35 (18)°. The F atoms in the trifluoromethyl group are disordered over two sets of sites with occupancies of 0.803 (6) and 0.197 (6). In the crystal, molecules are connected by N-H...Cl, O-H...Cl C-H...O and C-H...Cl hydrogen bonds, forming chains propagating along [001]. There are also C-H...[pi] interactions present in the crystal structure.