MOLECULAR-STRUCTURE AND CRYSTAL-STRUCTURE OF MU-HYDROXYCYCLOOCTADIENE(1,5)-RHODIUM(I)-DIMER AT 173-K - REACTION OF [(MU-OH)RH(COD-1,5)](2) WITH [ETA(5)-C-5(CH3)(5)](2)TI(IV)(CH3)(2) AND (ETA(5)-C5H5)(2)TI(II)[P(CH3)(3)](2)

[(mu-OH)Rh(COD-1,5)](2) was found to crystallize monoclinically, space group C2/c, with a = 31.687(3) Angstrom, b = 12.216(2) Angstrom, c = 22.414(2) Angstrom, beta = 135.006(7)degrees at 173 K and Z = 8. In so lid state, the asymmetric unit contains two molecules which are bonded via one intermolecular hydrogen bond. Two such dimers interact by two additional hydrogen bonds, giving a tetramer. In contrast to former r esults found with Cp(2)Ti(CH3)(2), there is no reaction observed betwe en [(mu-OH)Rh(COD-1,5)](2) and Cp(2)Ti(CH3)(2). Reacting it with Cp(2) Ti[P(CH3)(3)](2), the hydroxo rhodium complex gives rise to a complex ligand distribution, reaction and formation of CpRH(COD-1,5) and CpRh[ P(CH3)(3)](2).