N-(triphenylmethylsulfanyl)phthalimide.

The title compound, C27H19NO2S, contains chains of fused R(2)(2) (19) rings formed by intermolecular C-H...O=C hydrogen bonds and running along the [011] and [0-11] directions. These chains are linked through short intermolecular C-H...pi contacts, giving rise to sheets. The conformation of the title compound is dominated primarily by the nearly orthogonal lone-pair orbitals on the N and S atoms.