The coordination chemistry of iminooxosulphuranes VI. Factors affecting coordination geometry in complexes of tosyliminooxosulphurane

Article abstract of DOI:10.1016/0022-328X(90)85277-6

The complexes (M = Ru, Rh, Os, Ir) have been prepared from the 16-electron complex or the corresponding tris(phosphine) compounds .The sulphinylamine cumulene adopts one of three possible bonding geometries (pyramidal, or coplanar through sulphur, or ?-coordination through sulphur and nitrogen).The preference for a particular mode in a given complex is discussed in terms of metal electron density, d-orbital occupancy, oxidation state and frontier orbital symmetry.Treatment of the complex (prepared from tosyliminooxosulphurane and ) with carbon monoxide results in a rearrangement of the ?-bond cumulene in the precursor to a pyramidally bound ligand in the CO adduct .