Caesium hydride

Caesium hydride
IUPAC name Caesium hydride
Other names Cesium hydride
Identifiers
CAS number	13772-47-9 N
PubChem	139281 Y
ChemSpider	122830 Y
Jmol-3D images	Image 1
SMILES [H-].[Cs+]
InChI InChI=1S/Cs.H/q+1;-1 Y Key: HXCOCQWMKNUQSA-UHFFFAOYSA-N Y InChI=1S/Cs.H/q+1;-1 Key: HXCOCQWMKNUQSA-UHFFFAOYSA-N
Properties
Molecular formula	CsH
Molar mass	133.91339 g/mol
Appearance	White or colorless crystals or powder[1]
Density	3.42 g/cm3[1]
Melting point	~170 °C (decomposes)[1]
Structure
Crystal structure	Face centered cubic
Coordination geometry	Octahedral
Related compounds
Other anions	CsF, CsCl, CsBr, CsI
Other cations	LiH, NaH, KH, RbH, and all other hydrides
N hydride (verify) (what is: Y/N?) Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)
Infobox references

Caesium hydride (CsH) is a compound of caesium and hydrogen. 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]

The caesium nuclei 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 nuclei by an order of magnitude.^[4]

Crystal structure

At room temperature and atmospheric pressure, CsH has the same structure as NaCl.

References

1. ^ ^{a b c} Lide, D. R., ed (2005). CRC Handbook of Chemistry and Physics (86th ed.). Boca Raton (FL): CRC Press. p. 4.57. ISBN 0-8493-0486-5. 
2. ^ Tam, A.; Moe, G.; Happer, W. (1975). "Particle Formation by Resonant Laser Light in Alkali-Metal Vapor". Phys. Rev. Lett. 35: 1630–33. Bibcode 1975PhRvL..35.1630T. doi:10.1103/PhysRevLett.35.1630. 
3. ^ Burkhart, J. A.; Smith, F. J. (November 1963). "Application of dynamic programming to optimizing the orbital control process of a 24-hour communications satellite". http://ntrs.nasa.gov/search.jsp?R=543868&id=2&qs=N%3D4294965816. 
4. ^ Ishikawa, K.; Patton, B.; Jau, Y.-Y.; Happer, W. (2007). "Spin Transfer from an Optically Pumped Alkali Vapor to a Solid". p. 183004. Bibcode 2007PhRvL..98r3004I. doi:10.1103/PhysRevLett.98.183004.