Caesium hydride

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Caesium hydride
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Molar mass 133.91339 g/mol
Appearance White or colorless crystals or powder[1]
Density 3.42 g/cm3[1]
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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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