STRUCTURE OF DICHLORO(ETA-5-PENTAMETHYLCYCLOPENTADIENYL)(TRIMETHYLPHOSPHINE)IRIDIUM 0.25 DIETHYL-ETHER SOLVATE

[Ir(C10H15)(Cl)2{P(CH3)3}].1/4(C2H5)2O, M(r) = 492.94, tetragonal, I4, a = 17.918 (3), c = 11.409 (1) angstrom, V = 3662.9 angstrom 3, Z = 8, D(x) = 1.78 g cm-3, lambda(Mo K-alpha) = 0.7107 angstrom, mu = 76.4 cm-1, F(000) = 1887.5, T = 296 K, R = 0.036, wR = 0.047 for 959 observed reflections. The Ir atom is coordinated to an eta-5-pentamethylcyclopentadienyl group, a PMe3 ligand and two Cl atoms in a three-legged piano-stool type of structure. Selected bond distances and angles are: Ir-C5Me5 centroid 1.85, Ir-P 2.28 (1), Ir-Cl(1) 2.37 (1), Ir-Cl(2) 2.39 (1) angstrom; Cl(1)-Ir-Cl(2) 93.0 (3), Cl(1)-Ir-P 87.6 (2), Cl(2)-Ir-P 86.9 (2), Cl(1)-Ir-C5Me centroid 124.0, Cl(2)-Ir-C5Me centroid 123.0, P-Ir-C5Me5 centroid 130.8-degrees.