Abstract
The tetranuclear ruthenium cluster [Ru 4(CO) 10Cl 2(OEt) 2] has been prepared in low yield by the reaction of [Ru 3(CO) 12] with [N(PPh 3) 2]Cl in refluxing EtOH, followed by oxidation with either [NO][BF 4] or Ag[ClO 4]. A single-crystal X-ray analysis of the complex shows that the four metal atoms adopt a planar geometry with one ruthenium bonded by two μ 2-Cl ligands and two μ 3-OEt ligands to a trinuclear fragment. This complex crystallises in the monoclinic space group I2/ c, with a 14.458(3), b 22.073(6), c 15.302(4) Å, β 99.54(2)°, Z = 8; 3113 observed data with F > 3σ( F) were refined by blocked full-matrix least squares to R = 0.031, R w = 0.034.
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