[3-({(E)-2-[(4-Fluorophenyl)carbamo­thioyl]hydrazinylidene}methyl)-4-hy­droxy­benzyl]methyl­triphenyl­phos­phonium chloride

The cation in the title salt, C(33)H(28)FN(3)OPS(+)·Cl(−), is highly twisted with the phospho­nium group occupying a position almost normal to the central hydroxyl­benzene ring [P—C—C—C tosrsion angle = −100.9 (3)°], and with the hydrazone substituent twisted out of the plane [C—C—C—N torsion angle = 13.1 (4)°]. The fluoro­benzene ring is twisted out of the plane of the adjacent thio­urea residue, forming a dihedral angle of 51.69 (10)°. The configuration about the C=N bond [1.281 (4) Å] is E, the O—H and N—H hydrogen atoms are syn, and in the thio­urea residue, the N—H hydrogen atoms are anti, allowing for the formation of an intra­molecular N—H⋯N hydrogen bond. In the crystal, dimeric aggregates mediated by N—H⋯S bonds are formed, which are linked to the Cl(−) anions by O—H⋯Cl hydrogen bonds. The four-component aggregates are linked into a three-dimensional structure by C—H⋯Cl inter­actions.