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Disodium helide
Chemical compound / From Wikipedia, the free encyclopedia
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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]
Quick Facts Identifiers, Properties ...
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Identifiers | |
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3D model (JSmol) |
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Properties | |
HeNa2 | |
Molar mass | 49.982141 g·mol−1 |
Structure[1] | |
Fluorite, cF12 | |
Fm3m, #225 | |
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).
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