Crystal and Molecular Structure of 4-t-Butyl-5-cyano-2-phenyl-1-thioxo-7-thia-1-phosphabicyclo[2.2.1]hept-2-ene

Abstract
The crystal and molecular structures of the title compound were determined by means of X-ray diffraction. Crystal data: C16H18NS2P, Mr=319.4, triclinic, a=12.731(2), b=13.143(1), c=12.483(1) Å, α=102.39(1), β=104.34(1), γ=117.96(1)°, V=1648.6 Å3, space group P\barl, Dm=1.30, Dx=1.287 g cm−3, Z=4, μ=4.02 cm−1 (Mo Kα). The structure was solved by the direct method and refined by the block-diagonal least-squares method to R=0.082 for 4495 observed reflections. The bond distances and angles are in good agreement with the ordinary values except for the P–S–C bridged angle of 82.5°. An asymmetric unit contains two crystallographically independent molecules, which are rotational isomers along the P–C bond.

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