| Popis: |
η 4 -1,5-Cyclooctadiene-η 2 -tris(diphenylthiophosphinoyl)methanidoiridium(I), (COD)Ir(TrisS 3 ), was synthesized by the reaction of [(COD)IrCl] 2 with lithium tris(diphenylthiophosphinoyl)methanide, Li{[Ph 2 P(S)] 3 C}, in methylene chloride. A crystallographic structural determination was carried out on a yellow crystal in the monoclinic system of space group P 2 1 / n . The unit cell dimensions are a =10.826(3), b =21.659(6), c =17.487(5) A, β=100.23(2)° and Z =4. The coordination about iridium is square planar with the TrisS 3 − ligand showing bidentate behavior with one of the P(S) groups being non-coordinated. The variable temperature 31 P{ 1 H} NMR spectra indicate fluxional behavior of the TrisS 3 − ligand at room temperature and non-fluxional behavior at −80 °C. |
