Deuterium oxide

• Formula: D₂O
• Molecular weight: 20.0276
• IUPAC Standard InChI: InChI=1S/H2O/h1H2/i/hD2 Copy

  
• IUPAC Standard InChIKey: XLYOFNOQVPJJNP-ZSJDYOACSA-N Copy
• CAS Registry Number: 7789-20-0
• Chemical structure:
  This structure is also available as a 2d Mol file or as a computed 3d SD file
  The 3d structure may be viewed using Java or Javascript.
• Species with the same structure:
  • Deuterium oxide
• Isotopologues:
  • Water-t
  • Water-¹⁸O
  • Water-d
  • Water-t₂
  • Water
• Information on this page:
  • Gas phase thermochemistry data
  • Phase change data
  • Gas phase ion energetics data
  • References
  • Notes
• Other data available:
  • Reaction thermochemistry data
  • Ion clustering data
  • IR Spectrum
  • Vibrational and/or electronic energy levels
  • Fluid Properties
• Data at other public NIST sites:
  • Gas Phase Kinetics Database
  • X-ray Photoelectron Spectroscopy Database, version 5.0
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Gas phase thermochemistry data

Go To: Top, Phase change data, Gas phase ion energetics data, References, Notes

Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Gas Phase Heat Capacity (Shomate Equation)

C_p° = A + B*t + C*t² + D*t³ + E/t²
H° − H°_298.15= A*t + B*t²/2 + C*t³/3 + D*t⁴/4 − E/t + F − H
S° = A*ln(t) + B*t + C*t²/2 + D*t³/3 − E/(2*t²) + G
    C_p = heat capacity (J/mol*K)
    H° = standard enthalpy (kJ/mol)
    S° = standard entropy (J/mol*K)
    t = temperature (K) / 1000.

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Phase change data

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Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Data compiled as indicated in comments:
TRC - Thermodynamics Research Center, NIST Boulder Laboratories, Chris Muzny director

Antoine Equation Parameters

log₁₀(P) = A − (B / (T + C))
    P = vapor pressure (bar)
    T = temperature (K)

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Gas phase ion energetics data

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Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Data compiled as indicated in comments:
LBLHLM - Sharon G. Lias, John E. Bartmess, Joel F. Liebman, John L. Holmes, Rhoda D. Levin, and W. Gary Mallard
LLK - Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi
RDSH - Henry M. Rosenstock, Keith Draxl, Bruce W. Steiner, and John T. Herron

Ionization energy determinations

Appearance energy determinations

References

Go To: Top, Gas phase thermochemistry data, Phase change data, Gas phase ion energetics data, Notes

Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Chase, 1998
Chase, M.W., Jr., NIST-JANAF Themochemical Tables, Fourth Edition, J. Phys. Chem. Ref. Data, Monograph 9, 1998, 1-1951. [all data]

Steckel and Szapiro, 1963
Steckel, F.; Szapiro, S., Physical Prop. of Heavy Oxygen Water Part 1. Density and Thermal Expansion, Trans. Faraday Soc., 1963, 59, 331-43. [all data]

Taylor and Selwood, 1934
Taylor, H.S.; Selwood, P.W., Some Properties of Heavy Water, J. Am. Chem. Soc., 1934, 56, 998. [all data]

Aleksandrov, 1986
Aleksandrov, A.A., Critical Parameters of Ordinary and Heavy Water, Teploenergetika, 1986, No. 1, 74. [all data]

Sifner, 1985
Sifner, O., Recommended Values of Critical Parameters of Ordinary and Heavy Water, Chem. Listy, 1985, 79, 199. [all data]

Riesenfeld and Chang, 1935
Riesenfeld, E.H.; Chang, T.L., The Critical Data of Light and Heavy Water and the Density-Temperature Diagrams., Z. Phys. Chem., Abt. B, 1935, 30, 61-8. [all data]

Liu and Lindsay, 1970
Liu, C.-T.; Lindsay, W.T., Jr., Vapor Pressure of D₂O from 106 to 300 ºC, J. Chem. Eng. Data, 1970, 15, 4, 510-513, https://doi.org/10.1021/je60047a015 . [all data]

Reutt, Wang, et al., 1986
Reutt, J.E.; Wang, L.S.; Lee, Y.T.; Shirley, D.A., Molecular beam photoelectron spectroscopy and femtosecond intramolecular dynamics of H₂O⁺ and D₂O⁺, J. Chem. Phys., 1986, 85, 6928. [all data]

Lefaivre and Marmet, 1978
Lefaivre, D.; Marmet, P., Electroionization of D₂O and H₂O and study of fragments H⁺ and OH⁺, Can. J. Phys., 1978, 56, 1549. [all data]

Gurtler, Saile, et al., 1977
Gurtler, P.; Saile, V.; Koch, E.E., Rydberg series in the absorption spectra of H₂O and D₂O in the vacuum ultraviolet, Chem. Phys. Lett., 1977, 51, 386. [all data]

Botter and Carlier, 1977
Botter, R.; Carlier, J., Spectre de photoelectrons et calcul des facteurs de Franck-Condon pour H₂O, D₂O, HDO, J. Electron Spectrosc. Relat. Phenom., 1977, 12, 55. [all data]

Dixon, Duxbury, et al., 1976
Dixon, R.N.; Duxbury, G.; Rabalais, J.W.; Asbrink, L., Rovibronic structure in the photoelectron spectra of H₂O, D₂O and HDO, Mol. Phys., 1976, 31, 423. [all data]

Karlsson, Mattson, et al., 1975
Karlsson, L.; Mattson, L.; Jadrny, R.; Albridge, R.G.; Pinchas, S.; Bergmark, T.; Siegbahn, K., Isotopic and vibronic coupling effects in the valence electron spectra of H₂¹⁶O, H₂¹⁸O, and D₂¹⁶O, J. Chem. Phys., 1975, 62, 4745. [all data]

Bergmark, Karlsson, et al., 1974
Bergmark, T.; Karlsson, L.; Jadrny, R.; Mattsson, L.; Albridge, R.G.; Siegbahn, K., Isotopic effects in the electron spectra of H₂¹⁶O, H₂¹⁸O, and D₂¹⁶O, J. Electron Spectrosc. Relat. Phenom., 1974, 4, 85. [all data]

Katayama, Huffman, et al., 1973
Katayama, D.H.; Huffman, R.E.; O'Bryan, C.L., Absorption and photoionization cross sections for H₂O and D₂O in the vacuum ultraviolet, J. Chem. Phys., 1973, 59, 4309. [all data]

Asbrink and Rabalais, 1971
Asbrink, L.; Rabalais, J.W., Comments on the high resolution photoelectron spectrum of H₂O and D₂O, Chem. Phys. Lett., 1971, 12, 182. [all data]

Brundle and Turner, 1968
Brundle, C.R.; Turner, D.W., High resolution molecular photoelectron spectroscopy. II.Water and deuterium oxide, Proc. Roy. Soc. (London), 1968, A307, 27. [all data]

Brehm, 1966
Brehm, B., Massenspektrometrische Untersuchung der Photoionisation von Molekulen, Z. Naturforsch., 1966, 21a, 196. [all data]

Eland, 1974
Eland, J.H.D., Predissociation of triatomic ions studied by photoelectron-photoion coincidence spectroscopy, Adv. Mass Spectrom., 1974, 6, 917. [all data]

Appell and Durup, 1973
Appell, J.; Durup, J., The formation of protons by impact of low energy electrons on water molecules, Int. J. Mass Spectrom. Ion Phys., 1973, 10, 247. [all data]

McCulloh, 1976
McCulloh, K.E., Energetics and mechanisms of fragment ion formation in the photoionization of normal and deuterated water and ammonia, Int. J. Mass Spectrom. Ion Phys., 1976, 21, 333. [all data]

Cottin, 1959
Cottin, M., Etude des ions produits par impact electronique dans la vapeur d'eau, J. Chim. Phys., 1959, 56, 1024. [all data]

Notes

Go To: Top, Gas phase thermochemistry data, Phase change data, Gas phase ion energetics data, References

• Symbols used in this document:
  

  AE	Appearance energy
  Pc	Critical pressure
  S°gas,1 bar	Entropy of gas at standard conditions (1 bar)
  Tc	Critical temperature
  Tfus	Fusion (melting) point
  ΔfH°gas	Enthalpy of formation of gas at standard conditions
  ρc	Critical density

• Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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