4-(4-Methyl­phenyl­sulfon­yl)piperazin-1-ium tri­fluoro­acetate

In the title salt, C(11)H(17)N(2)O(2)S(+)·CF(3)COO(−), the cation is protonated at the secondary piperazine N atom. The dihedral angle between the benzene ring and the piperazine mean plane is 85.54 (10)°. In the crystal, cations and anions are connected by two types of strong N—H⋯O hydrogen bonds into chains extending along [101]. The chains are further assembled into (10-1) layers via stacking inter­actions between benzene rings of the cations [centroid–centroid distance = 3.7319 (13) Å] and a C—H⋯O inter­action involving a piperazine C—H group and a sulfonyl O atom. Another C—H⋯O inter­action between the piperazine ring and the sulfonyl group connects the ions into a three-dimensional network.