Thiophosphoryl iodide

Thiophosphoryl iodide
Names
	Other names Phosphorothioic triiodide; Phosphorus thioiodide; Thiophosphoryl triiodide;
Identifiers
CAS Number	63972-04-3;
3D model (JSmol)	Interactive image;
PubChem CID	21517233;
CompTox Dashboard (EPA)	DTXSID00615471 ;
	InChI InChI=1S/I3PS/c1-4(2,3)5 Key: CVHICNBAVVKDQW-UHFFFAOYSA-N;
	SMILES S=P(I)(I)I;
Properties
Chemical formula	PSI3
Molar mass	443.75 g·mol−1
Appearance	red-brown solid
Melting point	48 °C (118 °F; 321 K)
Boiling point	decomposes
Structure
Molecular shape	Tetrahedral at the P atom
Related compounds
Related compounds	Phosphorus triiodide; Phosphoryl iodide; Thiophosphoryl fluoride; Thiophosphoryl chloride; Thiophosphoryl bromide; Phosphorothioic chloride difluoride;
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Thiophosphoryl iodide is an inorganic compound with the formula P S I₃.^[1]

Preparation

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]

References

^ ^a ^b ^c Greenwood, Norman N.; Earnshaw, Alan (1997). Chemistry of the Elements (2nd ed.). Butterworth-Heinemann. pp. 501–503. ISBN 978-0-08-037941-8.
^ Arthur D. F. Toy (1975). The Chemistry of Phosphorus. Permanon Texts in Inorganic Chemistry. Vol. 3. Permanon Press. p. 438. ISBN 9781483139593.
^ Dillon, K. B.; Craveirinha Dillon, M. G.; Waddington, T. C. (1977). "The identification of some new thiophosphoryl compounds containing P–I bonds by means of ³¹P N.M.R. spectroscopy". Inorg. Nucl. Chem. Lett. 13 (8): 349–353. doi:10.1016/0020-1650(77)80109-8.

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[G&E-1] Greenwood, Norman N.; Earnshaw, Alan (1997). Chemistry of the Elements (2nd ed.). Butterworth-Heinemann. pp. 501–503. ISBN 978-0-08-037941-8.

[Toy-2] Arthur D. F. Toy (1975). The Chemistry of Phosphorus. Permanon Texts in Inorganic Chemistry. Vol. 3. Permanon Press. p. 438. ISBN 9781483139593.

[3] Dillon, K. B.; Craveirinha Dillon, M. G.; Waddington, T. C. (1977). "The identification of some new thiophosphoryl compounds containing P–I bonds by means of ³¹P N.M.R. spectroscopy". Inorg. Nucl. Chem. Lett. 13 (8): 349–353. doi:10.1016/0020-1650(77)80109-8.

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