In the title compound, [Ir(C(13)H(9)N(4))(C(13)H(8)NS)(2)]·3.5CDCl(3), the coordination at iridium is octa-hedral, but with narrow ligand bite angles. The bond lengths at iridium show the expected trans influence, with the Ir-N bonds trans to C being appreciably longer than those trans to N. The chelate rings are mutually perpendicular, the inter-planar angles between them all lying within 6° of 90°. All ligands are approximately planar; the maximum inter-planar angles within ligands are ca 10°. The three ordered deuterochloro-form mol-ecules are all involved in C⋯D-A contacts that can be inter-preted as hydrogen bonds of various types. The fourth deuterochloroform is disordered over an inversion centre.