Crystal structure and Hirshfeld surface analysis of (E)-3-[(4-methyl­benzyl­idene)amino]-5-phenylthiazolidin-2-iminium bromide N,N-di­methyl­formamide monosolvate

In the cation of the title salt, C(17)H(18)N(3)S(+)·Br(−)·C(3)H(7)NO, the central thia­zolidine ring adopts an envelope conformation with puckering parameters Q(2) = 0.310 (3) Å and φ(2) = 42.2 (6)°. In the crystal, each cation is connected to two anions by N—H⋯ Br hydrogen bonds, forming an R (4) (2)(8) motif parallel to the (10[Image: see text]) plane. van der Waals inter­actions between the cations, anions and N,N-di­methyl­formamide mol­ecules further stabilize the crystal structure in three dimensions. The most important contributions to the surface contacts are from H⋯H (55.6%), C⋯H/H⋯C (17.9%) and Br⋯H/H⋯Br (7.0%) inter­actions, as concluded from a Hirshfeld analysis.