mer-Bis[2-(1,3-benzothiazol-2-yl)phenyl-κC,N][3-phenyl-5-(2-pyridyl)-1,2,4-triazol-1-ido-κN,N]iridium(III) deuterochloro-form 3.5-solvate.

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.

mer-Bis[3,5-difluoro-2-(2-pyrid-yl)phenyl-κC,N]{5-(2-pyridyl-κN)-3-[3-(4-vinyl-benz-yloxy)phen-yl]-1,2,4-triazol-1-ido}iridium(III) methanol solvate.

In the title compound, [Ir(C(11)H(6)F(2)N)(2)(C(22)H(17)N(4)O)]·CH(3)OH, the coordination at iridium is essentially octa-hedral, but with distortions associated with the bite angles of the ligands [76.25 (9)-80.71 (12)°] and the differing trans influences of C and N ligands [Ir-N = 2.04 Š(average) trans to N but 2.14 Štrans to C]. All three bidentate ligands have coordinating ring systems that are almost coplanar [inter-planar angles = 1.7 (1)-3.8 (2)°]. The vinyl-benzyl group is disordered over two positions with occupations of 0.653 (4) and 0.347 (4). The methanol solvent mol-ecule is involved in a classical O-H⋯N hydrogen bond to a triazole N atom.