Strontium Phosphide

Strontium phosphide
Names
	Other names Tristrontium diphosphide
Identifiers
CAS Number	12504-16-4;
3D model (JSmol)	Interactive image;
ChemSpider	145854;
EC Number	235-678-9;
PubChem CID	166710;
UN number	2013
	InChI InChI=1S/2P.3Sr/q2-3;3+2 Key: ATAJSUOOOWSVGL-UHFFFAOYSA-N;
	SMILES [P-3].[P-3].[Sr+2].[Sr+2].[Sr+2];
Properties
Chemical formula	P2Sr3
Molar mass	324.8
Appearance	Black crystalline material
Density	2.68 g/cm3
Solubility in water	Decomposes in water
Structure
Crystal structure	cubic
Related compounds
Other anions	Calcium phosphide; Barium phosphide
Other cations	Strontium nitride; Strontium arsenide
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
	Infobox references

Strontium phosphide is an inorganic compound of strontium and phosphorus with the chemical formula Sr₃P₂.^[1]^[2] The compound looks like black crystalline material.^[3]

Synthesis

Heating strontium phosphate with soot in an arc furnace:

[math]\ce{ Sr3(PO4)2 + 8C -> Sr3P2 + 8CO }[/math]

Reaction of strontium with red phosphorus at high temperature:^[3]

[math]\ce{ 6Sr + P4 -> 2Sr3P2 }[/math]

Physical properties

Strontium phosphide forms black crystals.^[3]

Thermally stable, melts at high temperatures.

Dangerous when wet, poison.^[4]

Chemical properties

Decomposes with water releasing phosphine:^[3]

[math]\ce{ Sr3P2 + 2H2O -> 3Sr(OH)2 + 2PH3 }[/math]

Reacts with acids:

[math]\ce{ Sr3P2 + 6HCl -> 3SrCl2 + 2PH3 }[/math]

Uses

It is a highly reactive substance used as a reagent and in the manufacture of chemically reactive devices.^[5]

References

↑ "Strontium Phosphide" (in en). American Elements. https://www.americanelements.com/strontium-phosphide-12504-16-4.
↑ Wang, Junjie; Hanzawa, Kota; Hiramatsu, Hidenori; Kim, Junghwan; Umezawa, Naoto; Iwanaka, Koki; Tada, Tomofumi; Hosono, Hideo (8 November 2017). "Exploration of Stable Strontium Phosphide-Based Electrides: Theoretical Structure Prediction and Experimental Validation". Journal of the American Chemical Society 139 (44): 15668–15680. doi:10.1021/jacs.7b06279. PMID 29023114. https://pubs.acs.org/doi/10.1021/jacs.7b06279. Retrieved 13 December 2021.
↑ ^3.0 ^3.1 ^3.2 ^3.3 Ropp, Richard C. (31 December 2012) (in en). Encyclopedia of the Alkaline Earth Compounds. Newnes. p. 232. ISBN 978-0-444-59553-9. https://www.google.ru/books/edition/Encyclopedia_of_the_Alkaline_Earth_Compo/yZ786vEild0C?hl=en&gbpv=1&dq=strontium+phosphide+Sr3P2&pg=PA232&printsec=frontcover. Retrieved 13 December 2021.
↑ (in en) Toxic Substances Control Act (TSCA) Chemical Substance Inventory. U.S. Government Printing Office. 1979. p. 11. https://www.google.ru/books/edition/Toxic_Substances_Control_Act_TSCA_Chemic/EwXoYmUt_B0C?hl=en&gbpv=1&dq=strontium+phosphide+Sr3P2&pg=RA2-PA49&printsec=frontcover. Retrieved 13 December 2021.
↑ "STRONTIUM PHOSPHIDE | CAMEO Chemicals | NOAA". cameochemicals.noaa.gov. https://cameochemicals.noaa.gov/chemical/4551.

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[AA-1] "Strontium Phosphide" (in en). American Elements. https://www.americanelements.com/strontium-phosphide-12504-16-4.

[2] Wang, Junjie; Hanzawa, Kota; Hiramatsu, Hidenori; Kim, Junghwan; Umezawa, Naoto; Iwanaka, Koki; Tada, Tomofumi; Hosono, Hideo (8 November 2017). "Exploration of Stable Strontium Phosphide-Based Electrides: Theoretical Structure Prediction and Experimental Validation". Journal of the American Chemical Society 139 (44): 15668–15680. doi:10.1021/jacs.7b06279. PMID 29023114. https://pubs.acs.org/doi/10.1021/jacs.7b06279. Retrieved 13 December 2021.

[ROPP-3] 3.0 ^3.1 ^3.2 ^3.3 Ropp, Richard C. (31 December 2012) (in en). Encyclopedia of the Alkaline Earth Compounds. Newnes. p. 232. ISBN 978-0-444-59553-9. https://www.google.ru/books/edition/Encyclopedia_of_the_Alkaline_Earth_Compo/yZ786vEild0C?hl=en&gbpv=1&dq=strontium+phosphide+Sr3P2&pg=PA232&printsec=frontcover. Retrieved 13 December 2021.

[4] (in en) Toxic Substances Control Act (TSCA) Chemical Substance Inventory. U.S. Government Printing Office. 1979. p. 11. https://www.google.ru/books/edition/Toxic_Substances_Control_Act_TSCA_Chemic/EwXoYmUt_B0C?hl=en&gbpv=1&dq=strontium+phosphide+Sr3P2&pg=RA2-PA49&printsec=frontcover. Retrieved 13 December 2021.

[5] "STRONTIUM PHOSPHIDE | CAMEO Chemicals | NOAA". cameochemicals.noaa.gov. https://cameochemicals.noaa.gov/chemical/4551.