Caesium hydride
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| Template:Longitem | CsH |
| Molar mass | 133.91339 g/mol |
| Appearance | White or colorless crystals or powder[1] |
| Density | 3.42 g/cm3[1] |
| Melting point | Template:Chembox CalcTemperatures |
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| Template:Longitem | Octahedral |
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Caesium hydride or cesium hydride is an inorganic compound of caesium and hydrogen with the chemical formula Template:Chem2. It is an alkali metal hydride. It was the first substance to be created by light-induced particle formation in metal vapor,[2] and showed promise in early studies of an ion propulsion system using caesium.[3] It is the most reactive stable alkaline metal hydride of all. It is a powerful superbase and reacts with water extremely vigorously.
The caesium nucleus in CsH can be hyperpolarized through interactions with an optically pumped caesium vapor in a process known as spin-exchange optical pumping (SEOP). SEOP can increase the nuclear magnetic resonance (NMR) signal of caesium nucleus by an order of magnitude.[4]
It is very difficult to make caesium hydride in a pure form. Caesium hydride can be produced by heating caesium carbonate and metallic magnesium in hydrogen at 580 to 620 °C.[5]
Crystal structure
At room temperature and atmospheric pressure, CsH has the same structure as NaCl.
References
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