Figure 5 Molecular interactions (dashed lines) between the laptinib cations and tosylate anions in (I), in a perspective view of the partial packing in the unit cell. H atoms not involved in the interactions have been omitted for clarity. Selected atoms of the molecules are labelled, primarily to provide a key for the coding of the atoms. [Symmetry codes: (i) x + 1, y, z; (ii) x − , −y + , −z + 2.]