Caesium hydride

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Caesium hydride
Caesium-hydride-xtal-3D-SF.png
IUPAC name Caesium hydride
Properties[1]
Chemical formula CsH
Molar mass 133.91 g/mol
Appearance white solid
Density 3.41 g/cm3
Solubility in water reacts
Structure
Crystal structure NaCl, cF8
Space group Fm3m, No. 225
Coordination geometry Octahedral (Cs+)
Octahedral (H)
Related compounds
Other anions Caesium fluoride
Caesium chloride
Caesium bromide
CsI
Other cations Lithium hydride
Sodium hydride
Potassium hydride
Rubidium hydride
Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)

Caesium hydride (CsH) is a compound of caesium and hydrogen. It was the first substance to be create by light-induced particle formation in a metal vapor.[2] It also showed promise in early studies of an ion propulsion system using caesium.[3]

The caesium nuclei in CsH can be hyperpolarized through interactions with an optically pumped caesium vapor in a process known as spin-exhcange optical pumping (SEOP). SEOP can increase the Nuclear Magnetic Resonance (NMR) signal of caesium nuclei by an order of magnitude.[4]

References

  1. CRC Handbook of Chemistry and Physics, 62nd ed.; Weast, Robert C., Ed.; CRC Press: Boca Raton, FL, 1981; p B-92. ISBN 0-8493-0462-8.
  2. Tam, A.; Moe, G.; Happer, W. Particle Formation by Resonant Laser Light in Alkali-Metal Vapor. Phys. Rev. Lett. 1975, 35, 1630–33. DOI: 10.1103/PhysRevLett.35.1630.
  3. Burkhart, J. A.; Smith, F. J. Application of dynamic programming to optimizing the orbital control process of a 24-hour communications satellite; NASA Technical Report, November 1963, <http://ntrs.nasa.gov/search.jsp?R=543868&id=2&qs=N%3D4294965816>.
  4. Ishikawa, K.; Patton, B.; Jau, Y.-Y.; Happer, W. Spin Transfer from an Optically Pumped Alkali Vapor to a Solid. Phys. Rev. Lett. 2007, 98, 183004. DOI: 10.1103/PhysRevLett.98.183004.
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