trans-3,5-Diphenyl-1,4,2,6-oxathiadiphosphorinane-3,5-dione

The title compound, C₁₄H₁₄O₃P₂S, exhibits a flattened chair conformation of the heterocycle. The ring bond angle at oxygen is extremely wide at 137.12 (9)°, whereas that at sulfur is narrow at 98.78 (9)°.

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