Tamura Y1, Hisamatsu Y1, Kumar S1, Itoh T1, Sato K1, Kuroda R1, Aoki S1.
Inorg Chem. 2016 Dec 30. doi: 10.1021/acs.inorgchem.6b02270. [Epub ahead of print]We report on the efficient synthesis of tris-heteroleptic iridium (Ir) complexes based on the degradation of tris-cyclometalated Ir complexes (IrL3, L: cyclometalating ligand) in the presence of Brønsted and Lewis acids such as HCl (in 1,4-dioxane), AlCl3, TMSCl, and ZnX2 (X = Br or Cl), which affords the corresponding halogen-bridged Ir dimers (μ-complexes). Tris-cyclometalated Ir complexes containing electron-withdrawing groups such as fluorine, nitro, or CF3 moieties on the ligands were less reactive. Read More