Uranium(IV) hydride
Metal hydride composed of uranium and hydrogen
From Wikipedia, the free encyclopedia
Uranium(IV) hydride is a chemical compound of uranium and hydrogen with the chemical formula UH4, a metal hydride.
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| IUPAC name
Uranium (IV) hydride | |
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CompTox Dashboard (EPA) |
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| Properties | |
| UH4 | |
| Molar mass | 242.061 g·mol−1 |
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Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Synthesis and Reactions
In 1997, Souter et al. reported the production of UH4 by reacting laser ablated uranium atoms with dihydrogen and capturing the product on solid argon. The assignment of the structure was made using infrared spectroscopic evidence supported by DFT calculations.[1] Uranium(IV) hydride has a quasi-tetrahedral (Cs) structure and is formed by the successive insertion of uranium into two hydrogen molecules:
- U + H2 → UH2
- UH2 + H2 → UH4
Further reaction with hydrogen only produces dihydrogen complexes: UH4(H2)n (1 ≤ n ≤ 6).[2]
