CLUSTER CHEMISTRY. X. PREPARATION OF 1,2-BIS(DIPHENYLPHOSPHINO)ETHANE DERIVATIVES OF Ru3(C0)12: CRYSTAL AND MOLECULAR STRUCTURES OF Ru3(C0)10(μ-Ph2CH2CH2Ph2)

Article abstract of DOI:10.1016/S0022-328X(00)85723-X

The reactions of dppe with Ru3(CO)12 catalysed by Ph2CO anion radical have been investigated.Under the appropriate conditions Ru3(CO)11(PPh2CH2CH2PPh2) (with only one P atom coordinated), 2(μ-dppe) (with one dppe ligand bridging two Ru3(CO)11 clusters), Ru3(CO)10(μ-dppe) and Ru3(CO)8(μ-dppe)2 (both with dppe bridging Ru-Ru bonds) can all be isolated in good yields.A full X-ray crystallographic analysis of Ru3(CO)10(μ-dppe) shows that it crystallizes in the triclinic system, space group P<*>, a 10.615(2), b 11.769(6), c 16.584(4) Angstroem, α 75.68(2), β 84.59(2), γ 69.64(2)^o.The structure was refined to R=0.030, R_ω=0.034 using 3558 data with I <*> 2.5 ?(I).The dppe ligand bridges a Ru-Ru bond (2.856(1) Angstroem), occupying equatorial sites on adjacent Ru atoms.Other distances: non-bridged Ru-Ru bonds are 2.855(1), 2.847(1); Ru-P, 2.330(2) Angstroem.