Abstract
Abstract The molecular structure of the title compound has been determined from three-dimensional X-ray diffraction data. The crystal belongs to the triclinic system: P\bar1, a=11.488(2), b=18.163(2), c=10.998(2)Å, α=101.70(2), β=118.29(1), γ=85.32(3)°, Z=2. The structure has been refined by block-diagonal least-squares techniques using 3749 non-zero reflections to the final R value of 0.067. The rhodium atom is coordinated in a slightly distorted square-planar geometry by the bisphosphine and the diene ligand, with average Rh–P and Rh–C distances of 2.301(2) and 2.26(1)Å, respectively. The seven-membered chelate ring takes a distorted boat conformation, and the two phenyl groups of diphenylphosphine are arranged in a face-edge manner and those of the other diphenylphosphine are in a helical arrangement like a propeller, viewed from cycloocta diene.
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