Triphenylphosphine selenide

Triphenylphosphine selenide

Names
Other names triphenylphosphane selenide
Identifiers
CAS Number	3878-44-2
Properties
Chemical formula	C18H15PSe
Molar mass	341.25
Appearance	white solid
Melting point	186.5 to 187.5
Solubility in water	insoluble
Solubility	very soluble in dichloromethane, pyridine, and THF; moderately soluble on heating in acetonitrile, ethanol, and methanol; insoluble in ether[1]
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

Triphenylphosphine selenide is a 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.^[2] Single crystals have been isolated with both monoclinic^[3] and triclinic^[4] structures (space groups: P2₁/c and P1 respectively); in both cases the geometry at phosphorus is tetrahedral.

See Also

• Triphenylphosphine oxide
• Triphenylphosphine sulfide

References

1. Mayhew, D. L., Clive, D. L. J., Stawinski, J. and Bollmark, M. 2004. Triphenylphosphine Selenide. e-EROS Encyclopedia of Reagents for Organic Synthesis doi:10.1002/047084289X.rt378.pub2
2. Philip Nicpon, Devon W. Meek "Triphenylphosphine Selenide" Inorganic Syntheses, 1967, Volume 10, 157–159. doi:10.1002/9780470132418.ch23
3. Codding, P. W.; Kerr, K. A. (15 May 1979). "Triphenylphosphine selenide". Acta Crystallographica Section B Structural Crystallography and Crystal Chemistry 35 (5): 1261–1263. doi:10.1107/S0567740879006129.
4. Jones, P. G.; Kienitz, C.; Thöne, C. (January 1994). "Crystal structure of triphenylphosphine selenide (triclinic), C18H15PSe". Zeitschrift für Kristallographie 209 (1): 80–81. doi:10.1524/zkri.1994.209.1.80.