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Hydrogen deuteride

Hydrogen deuteride
Skeletal formula of hydrogen deuteride
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IUPAC name
Hydrogen deuteride
Systematic IUPAC name
(2H)Dihydrogen[citation needed]
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13983-20-5 7pxY
ChEBI CHEBI:29237 7pxY
ChemSpider 146609 7pxY
EC number 237-773-0
Jmol-3D images Image
PubChem Template:Chembox PubChem/format
UN number 1049
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H[2H]
Molar mass 3.02204 g mol−1
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EU classification Extremely Flammable F+
R-phrases R12
S-phrases S16, S33, S36, S38
NFPA 704

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Related hydrogens
Deuterium

Hydrogen
Tritium

Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
 14pxY verify (what is10pxY/10pxN?)
Infobox references

Hydrogen deuteride is a diatomic molecule composed of the two isotopes of hydrogen: the majority isotope 1H protium and 2H deuterium. Its molecular formula is HD.

Natural abundance

Hydrogen deuteride is a minor component of naturally occurring molecular hydrogen. In particular, hydrogen deuteride is one of the minor but noticeable components of the atmospheres of all the giant planets, with abundances from about 30 ppm to about 200 ppm. HD has also been found in supernova remnants,[1] and other sources.[citation needed]

Occurrence of HD vs. H2 in gas giants
Planet HD H2[citation needed]
Jupiter ~0.003% 89.8% ±2.0%
Uranus ~0.007% 83.0% ±3.0%
Neptune ~0.019% 80.0% ±3.2%

Radio emission spectra

HD and H2 have very similar emission spectra, but the emission frequencies differ.[2]

The frequency of the astronomically important J = 1-0 rotational transition of HD at 2.7 THz has been measured with tunable FIR radiation with an accuracy of 150 kHz.[3]

References

  1. ^ Neufeld, David A.; Hollenbach, David J.; Kaufman, Michael J.; Snell, Ronald L.; Melnick, Gary J.; Bergin, Edwin A.; Sonnentrucker, Paule (2007). "SpitzerSpectral Line Mapping of Supernova Remnants. I. Basic Data and Principal Component Analysis". The Astrophysical Journal 664 (2): 890. Bibcode:2007ApJ...664..890N. arXiv:0704.2179. doi:10.1086/518857. 
  2. ^ Quinn, W.; Baker, J.; Latourrette, J.; Ramsey, N. (1958). "Radio-Frequency Spectra of Hydrogen Deuteride in Strong Magnetic Fields". Phys. Rev. 112 (6): 1929. Bibcode:1958PhRv..112.1929Q. doi:10.1103/PhysRev.112.1929. 
  3. ^ Evenson, K. M.; Jennings, D. A.; Brown, J. M.; Zink, L. R.; Leopold, K. R. (1988). "Frequency measurement of the J = 1-0 rotational transition of HD". Astrophysical Journal 330: L135. Bibcode:1988ApJ...330L.135E&db_key=AST. doi:10.1086/185221. 

Further reading

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