SYNTHESIS AND CHARACTERIZATION OF THE DIPHENYLFULVENE DERIVATIVE CO)(14)(MU(3)-SIGMA-ETA(2)ETA(3)-C(5)H(4)CPH(2))], SHOWING AN UNUSUAL FACIAL BONDING MODE AND FLUXIONALITY ON THE NMR TIMESCALE

The molecular structure of the octahedral cluster, O)(14)(mu(3)-sigma: eta(2):eta(3)-C(5)H(4)CPh(2))], prepared from the reaction of [Ru6C(CO )(17)] with diphenylfulvene in the presence of trimethylamine-N oxide, has been established by low-temperature single-crystal X-ray diffract ion analysis; the coordination mode is unique and the compound display s highly unusual fluxional behaviour on the NMR timescale.