Triphenylphosphine selenide is an organophosphorus compound with the formula (C6H5)3PSe. It is a white solid which is soluble in most organic solvents. The compound is used in the preparation of other selenium compounds and is itself prepared by the reaction of triphenylphosphine with potassium selenocyanate.Philip Nicpon, Devon W. Meek "Triphenylphosphine Selenide" Inorganic Syntheses, 1967, Volume 10, 157–159. Single crystals have been isolated with both monoclinic and triclinic structures (space groups: P21/c and P respectively); in both cases the geometry at phosphorus is tetrahedral.
See also Triphenylphosphine oxide Triphenylphosphine sulfide Trioctylphosphine selenide
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