Iron pentahydride

Iron pentahydride  Identifiers

CAS Number

* 2225974-72-9 Y

3D model (JSmol)

* Interactive image

InChI

* InChI=1S/Fe.5H

Key: HAXLEIPZVOGIBZ-UHFFFAOYSA-N

SMILES

* [Fe].[H].[H].[H].[H].[H]

Properties

Chemical formula

| FeH5
Molar mass | 60.885 g·mol−1

Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

Infobox references

Iron pentahydride FeH
5 is a superhydride compound of iron and hydrogen, stable under high pressures. It is important because it contains atomic hydrogen atoms that are not bonded into smaller molecular clusters, and may be a superconductor. Pairs of hydrogen atoms are not bonded together into molecules. FeH
5 has been made by compressing a flake of iron with hydrogen in a diamond anvil cell to a pressure of 130 GPa and heating to below 1500K.[1] When decompressed to 66 GPa it decomposes to solid FeH

The unit cell is tetragonal with space group I4/mmm.[2]

## See also

* Iron hydrides

## References

1. ↑ Pépin, C. M.; Geneste, G.; Dewaele, A.; Mezouar, M.; Loubeyre, P. (28 July 2017). "Synthesis of FeH5: A layered structure with atomic hydrogen slabs" (in en). Science 357 (6349): 382–385. doi:10.1126/science.aan0961. ISSN 0036-8075. PMID 28751605. Bibcode: 2017Sci...357..382P.
2. ↑ "Synthesis of FeH5 under pressure: Dense atomic metal hydrogen stabilised with Fe" (in en). Spotlight on Science (European Synchrotron Radiation Facility). 27 July 2017. https://www.esrf.eu/home/news/spotlight/content-news/spotlight/spotlight294.html.

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