Strontium selenide
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| ImageFile = NaCl_polyhedra.svg
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| Section1 = {{Chembox Identifiers
| CASNo = 1315-07-7
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| EINECS = 215-258-1
| PubChem = 73978
| StdInChI=1S/Se.Sr/q-2;+2
| StdInChIKey = BCTHFFLRHBNYHU-UHFFFAOYSA-N
| SMILES = [Se-2].[Sr+2]
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| Section2 = {{Chembox Properties
| Formula = SrSe
| MolarMass = 166.58
| Appearance = White powder, turns reddish brown when exposed to air{{cite journal|journal=Physical Review|volume=25|issue=3|language=en|issn=0031-899X|date=1925-03-01|pages=333–337|doi=10.1103/PhysRev.25.333|url=https://link.aps.org/doi/10.1103/PhysRev.25.333|title=The Crystal Structure of Metallic Tellurium and Selenium and of Strontium and Barium Selenide|accessdate=2023-06-13|author=Mabel K. Slattery|bibcode=1925PhRv...25..333S |url-access=subscription}}
| Density = 4.5
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| Section3 = {{Chembox Hazards
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Strontium selenide is an inorganic compound with the chemical formula SrSe.
Preparation
Strontium selenide can be prepared by reducing strontium selenate with hydrogen at 600 °C.{{cite journal|journal=Zeitschrift für anorganische und allgemeine Chemie|volume=126|issue=1|language=en|date=1923-01-26|pages=227–236|doi=10.1002/zaac.19231260120|url=http://doi.wiley.com/10.1002/zaac.19231260120|title=Über Erdalkaliselenide|accessdate=2021-01-05|author=A. Henglein|url-access=subscription}} It can also be produced by reacting strontium and hydrogen selenide in liquid ammonia.{{cite journal|journal=Zeitschrift für anorganische und allgemeine Chemie|volume=437|issue=1|language=de|issn=0044-2313|date=Dec 1977|pages=193–196|doi=10.1002/zaac.19774370127|url=http://doi.wiley.com/10.1002/zaac.19774370127|title=Über die Darstellung von CaSe, SrSe, BaSe und EuSe durch Reaktion der Metalle mit Selenwasserstoff in flüssigem Ammoniak|accessdate=2021-01-05|author=T. Petzel, J. Kohle|url-access=subscription}}
Properties
Strontium selenide crystallizes in the orthorhombic crystal system with space group Fm{{overline|3}}m. It has a NaCl structure.{{cite book |author= |title=Диаграммы состояния двойных металлических систем |editor=Н. П. Лякишева |location=М. |date=2000 |publisher=Машиностроение |volume=3 Книга 2 |isbn=5-217-02932-3}}{{Citation |last=Predel |first=B. |title=Se-Sr (Selenium-Strontium) |date=1998 |url=http://materials.springer.com/lb/docs/sm_lbs_978-3-540-70705-9_2714 |work=Pu-Re – Zn-Zr |series=Landolt-Börnstein - Group IV Physical Chemistry |volume=5 J |pages=1 |editor-last=Madelung |editor-first=O. |access-date=2023-07-07 |place=Berlin/Heidelberg |publisher=Springer-Verlag |language=en |doi=10.1007/10551312_2714 |isbn=978-3-540-61742-6 |edition=Landolt-Börnstein - Group IV Physical Chemistry|url-access=subscription }} It transforms into a CsCl structure with a space group Pm3m under high pressure (14 GPa).{{cite journal|journal=Journal of Molecular Structure: THEOCHEM|volume=897|issue=1–3|language=en|date=Mar 2009|pages=95–99|doi=10.1016/j.theochem.2008.11.033|url=https://linkinghub.elsevier.com/retrieve/pii/S0166128008007185|title=Phase transition, mechanical properties and stability of strontium chalcogenides under high pressure|accessdate=2021-01-05|author=Purvee Bhardwaj, Sadhna Singh, N.K. Gaur|archive-date=2018-06-11|archive-url=https://web.archive.org/web/20180611111437/https://linkinghub.elsevier.com/retrieve/pii/S0166128008007185|url-status=live|url-access=subscription}}
It reacts with mercury selenide and germanium diselenide at high temperature to obtain the SrHgGeSe4 crystal.{{cite journal|journal=Chemistry of Materials|volume=31|issue=8|language=en|issn=0897-4756|date=2019-04-23|pages=3034–3040|doi=10.1021/acs.chemmater.9b01023|url=https://pubs.acs.org/doi/10.1021/acs.chemmater.9b01023|title=BaHgGeSe 4 and SrHgGeSe 4 : Two New Hg-Based Infrared Nonlinear Optical Materials|accessdate=2021-01-05|author=Yangwu Guo, Fei Liang, Wenlong Yin, Zhuang Li, Xiaoyu Luo, Zhe-Shuai Lin, Jiyong Yao, Arthur Mar, Yicheng Wu|s2cid=131951753 |url-access=subscription}} It reacts with thorium and selenium at high temperature in the presence of tin to obtain SrTh2Se5.{{cite journal|journal=Inorganic Chemistry|volume=37|issue=15|language=en|issn=0020-1669|date=Jul 1998|pages=3798–3801|doi=10.1021/ic971594i|url=https://pubs.acs.org/doi/10.1021/ic971594i|title=Syntheses, Crystal Structures, and Physical Properties of the New Thorium Chalcogenides CuTh 2 Te 6 and SrTh 2 Se 5|accessdate=2021-01-05|author=Amy A. Narducci, James A. Ibers|pmid=11670482 |url-access=subscription}}