Thiophosphoryl iodide is an inorganic compound with the formula PSI3.

[1] Thiophosphoryl iodide can be prepared by reacting phosphorus triiodide with sulfur in carbon disulfide at 10–15 °C in the dark for several days.

[1][2] Attempts to synthesise PSI3 by the reaction of lithium iodide with thiophosphoryl bromide lead to the mixed thiophosphoryl halides PSBr2I and PSBrI2 instead.

[3] This inorganic compound–related article is a stub.

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