Crystal Structure of 4′-Chlorobenzoylmethylenetriphenylphosphorane ylide, C₂₆H₂₀ClOP

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The crystal structure of a colorless phosphorus ylide, Ph₃PCHCOC₆H₄Cl, was determined by the X-ray diffraction method. All atoms occupy general positions in the monoclinic space group, C2/c, and have the following unit-cell dimensions: a = 16.6184(9)Å, b = 10.9196(6)Å, c = 23.5465(12)Å, β = 100.366(4)°, Z = 8 and V = 4203.2(4)ų.