Disodium helide information

Disodium helide
Identifiers
3D model (JSmol)	Interactive image;
	InChI InChI=1S/He.2Na Key: JTZHEFJRNNBIOK-UHFFFAOYSA-N;
	SMILES [Na].[Na].[He];
Properties
Chemical formula	HeNa2
Molar mass	49.982141 g·mol−1
Structure
Crystal structure	Fluorite, cF12
Space group	Fm3m, #225
Lattice constant	a = 3.95 Å at 300 GPa
Related compounds
Other cations	Lithium helium
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Disodium helide^[2] (Na₂He) is a compound of helium and sodium that is stable at high pressures above 113 gigapascals (1,130,000 bar). It was first predicted^[3] using the USPEX crystal structure prediction algorithm and then synthesised in 2016.^[4]

^ Wang, Hui-Tian; Boldyrev, Alexander I.; Popov, Ivan A.; Konôpková, Zuzana; Prakapenka, Vitali B.; Zhou, Xiang-Feng; Dronskowski, Richard; Deringer, Volker L.; Gatti, Carlo; Zhu, Qiang; Qian, Guang-Rui; Saleh, Gabriele; Lobanov, Sergey; Stavrou, Elissaios; Goncharov, Alexander F.; Oganov, Artem R.; Dong, Xiao (May 2017). "A stable compound of helium and sodium at high pressure – Supplementary Information table 5". Nature Chemistry. 9 (5): 440–445. arXiv:1309.3827. Bibcode:2017NatCh...9..440D. doi:10.1038/nchem.2716. PMID 28430195. S2CID 20459726.
^ "Under Pressure, Helium Stops Being a Bystander". insidescience.org. 2018-03-28. Retrieved 2020-11-14. Then, in 2017, researchers synthesized a stable compound from helium and sodium known as disodium helide under the kinds of high pressures seen within gas giants, suggesting this compound might be found in nature and not just in labs.
^ Saleh, Gabriele; Dong, Xiao; Oganov, Artem; Gatti, Carlo; Qian, Guang-rui; Zhu, Qiang; Zhou, Xiang-Feng; Wang, Hiu-tian (5 August 2014). "Stable Compound of Helium and Sodium at High Pressure". Acta Crystallographica Section A. 70 (a1): C617. arXiv:1309.3827. doi:10.1107/S2053273314093826.
^ Cite error: The named reference dong was invoked but never defined (see the help page).

[str-1] Wang, Hui-Tian; Boldyrev, Alexander I.; Popov, Ivan A.; Konôpková, Zuzana; Prakapenka, Vitali B.; Zhou, Xiang-Feng; Dronskowski, Richard; Deringer, Volker L.; Gatti, Carlo; Zhu, Qiang; Qian, Guang-Rui; Saleh, Gabriele; Lobanov, Sergey; Stavrou, Elissaios; Goncharov, Alexander F.; Oganov, Artem R.; Dong, Xiao (May 2017). "A stable compound of helium and sodium at high pressure – Supplementary Information table 5". Nature Chemistry. 9 (5): 440–445. arXiv:1309.3827. Bibcode:2017NatCh...9..440D. doi:10.1038/nchem.2716. PMID 28430195. S2CID 20459726.

[2] "Under Pressure, Helium Stops Being a Bystander". insidescience.org. 2018-03-28. Retrieved 2020-11-14. Then, in 2017, researchers synthesized a stable compound from helium and sodium known as disodium helide under the kinds of high pressures seen within gas giants, suggesting this compound might be found in nature and not just in labs.

[3] Saleh, Gabriele; Dong, Xiao; Oganov, Artem; Gatti, Carlo; Qian, Guang-rui; Zhu, Qiang; Zhou, Xiang-Feng; Wang, Hiu-tian (5 August 2014). "Stable Compound of Helium and Sodium at High Pressure". Acta Crystallographica Section A. 70 (a1): C617. arXiv:1309.3827. doi:10.1107/S2053273314093826.

[dong-4] Cite error: The named reference dong was invoked but never defined (see the help page).

Disodium helide information

and 7 Related for: Disodium helide information

Disodium helide

Helium compounds

Lithium helide

Noble gas compound

Electride

Nonmetal

Oxidation state

Identifiers

3D model (JSmol)	Interactive image
InChI InChI=1S/He.2Na Key: JTZHEFJRNNBIOK-UHFFFAOYSA-N
SMILES [Na].[Na].[He]
Properties
Chemical formula	HeNa₂
Molar mass	49.982141 g·mol⁻¹
Structure^[1]
Crystal structure	Fluorite, cF12
Space group	Fm3m, #225
Lattice constant	a = 3.95 Å at 300 GPa
Related compounds
Other cations	Lithium helium
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references