Cluster chemistry: XXX. Reaction of a triruthenium anion with [O{Au(PPh3)}3][BF4]: Synthesis and structure of Ru3Au3(μ3-2η1,η3-C12H15)(CO)8(PPh3)3 |
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| Authors: | Michael I Bruce Omar Bin Shawkataly Brian K Nicholson |
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| Institution: | Jordan Laboratories, Department of Physical and Inorganic Chemistry, University of Adelaide, Adelaide 500 South Australia;Department of Chemistry, University of Waikato, Hamilton New Zealand |
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| Abstract: | The cluster HRu3(μ3-C12H15)(CO)9 is rapidly deprotonated by KHBBu3sec] in tetrahydrofuran, generating the anion Ru3(μ3-C12H15)(CO)9]? in high yield. Reaction between this anion and O{Au(PPh3)}3]BF4] gives Ru3Au3(μ3-C12H15)(CO)8(PPh3)3 (2) as the main product, shown by an X-ray study to contain a capped trigonal-bipyramidal Ru3Au3 core in which the C12H15 ligand is bonded in the μ3-2η1,η3 fashion to the Ru3 face. An alternative formulation involving the cyclo-Au3(PPh3)3 moiety acting as a three-electron donor to the Ru3 cluster is discussed. Crystals of 2 are monoclinic, space group P21/c, a 13.574(1), b 40.634(4), c 14.617(2) Å, β 92.58(1)°, Z = 4; 3233 data with I > 3σ(I) were refined to R = 0.078, Rw = 0.084. |
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