Abstract
The [2.2]paracyclophane cluster, Ru6C(CO)14(μ3-η2∶η2∶ η2-C16H16) (1), undergoes reaction with Me3NO and triphenylphosphine to yield Ru6C(CO)13(μ3-η2∶η2∶η2-C16H16)(PPh3) (2), which may also be produced from (1) by thermolysis with PPh3 in THF. Compound (2) has been fully characterized in solution by spectroscopy and in the solid state by a single crystal X-ray diffraction analysis at 277 K, and its structure is compared with that of the parent cluster, (1). Using the same synthetic procedures, the tricyclohexylphosphine analogue, Ru6C(CO)13(μ3-η2∶η2∶η2-C16H16)(PCy3) (3), has also been prepared and characterized spectroscopically. A comparison of the chemical shifts of the 577-01 protons in the 1H-n.m.r. spectra of compounds (1)–(3) together with a variety of other [2.2]paracyclophane and benzene clusters has been made.
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