A paramagnetic, mononuclear organometallic iridium(II) complex: [Ir(C6Cl5)2(cod)]

Abstract

Unexpectedly stable, 2 is the first mononuclear IrII complex whose ligands are bound exclusively through C atoms. Complex 2, prepared by oxidation of 1 with I2 or Ag+, is close to square planar. The phenyl rings are almost perpendicular to the metal's coordination plane; the ortho Cl atoms are quite close to the Ir metal center, which could explain the remarkable stability of 2. cod = 1,5-cyclooctadiene.