mercury

• Formula: Hg
• Molecular weight: 200.59
• IUPAC Standard InChI: InChI=1S/Hg Copy

  
• IUPAC Standard InChIKey: QSHDDOUJBYECFT-UHFFFAOYSA-N Copy
• CAS Registry Number: 7439-97-6
• Chemical structure:
  This structure is also available as a 2d Mol file
• Permanent link for this species. Use this link for bookmarking this species for future reference.
• Information on this page:
  • Gas phase thermochemistry data
  • Condensed phase thermochemistry data
  • Phase change data
  • Reaction thermochemistry data
  • Gas phase ion energetics data
  • References
  • Notes
• Other data available:
  • Henry's Law data
  • Ion clustering data
• Data at other public NIST sites:
  • NIST Atomic Spectra Database - Lines Holdings (on physics web site)
  • NIST Atomic Spectra Database - Levels Holdings (on physics web site)
  • NIST Atomic Spectra Database - Ground states and ionization energies (on physics web site)
  • Gas Phase Kinetics Database
  • X-ray Photoelectron Spectroscopy Database, version 5.0
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• NIST / TRC Web Thermo Tables, professional edition (thermophysical and thermochemical data)

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Gas phase thermochemistry 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.

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 (cal/mol*K)
    H° = standard enthalpy (kcal/mol)
    S° = standard entropy (cal/mol*K)
    t = temperature (K) / 1000.

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Condensed phase thermochemistry 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.

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 (atm)
    T = temperature (K)

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Reaction thermochemistry 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 by: Michael M. Meot-Ner (Mautner) and Sharon G. Lias

Note: Please consider using the reaction search for this species. This page allows searching of all reactions involving this species. A general reaction search form is also available. Future versions of this site may rely on reaction search pages in place of the enumerated reaction displays seen below.

Individual Reactions

(Hg⁺ • 20) +  = (Hg⁺ • 21)

By formula: (Hg⁺ • 20Hg) + Hg = (Hg⁺ • 21Hg)

(Hg⁺ • 21) +  = (Hg⁺ • 22)

By formula: (Hg⁺ • 21Hg) + Hg = (Hg⁺ • 22Hg)

(Hg⁺ • 22) +  = (Hg⁺ • 23)

By formula: (Hg⁺ • 22Hg) + Hg = (Hg⁺ • 23Hg)

(Hg⁺ • 23) +  = (Hg⁺ • 24)

By formula: (Hg⁺ • 23Hg) + Hg = (Hg⁺ • 24Hg)

(Hg⁺ • 10) +  = (Hg⁺ • 11)

By formula: (Hg⁺ • 10Hg) + Hg = (Hg⁺ • 11Hg)

(Hg⁺ • 11) +  = (Hg⁺ • 12)

By formula: (Hg⁺ • 11Hg) + Hg = (Hg⁺ • 12Hg)

(Hg⁺ • 12) +  = (Hg⁺ • 13)

By formula: (Hg⁺ • 12Hg) + Hg = (Hg⁺ • 13Hg)

(Hg⁺ • 13) +  = (Hg⁺ • 14)

By formula: (Hg⁺ • 13Hg) + Hg = (Hg⁺ • 14Hg)

(Hg⁺ • 14) +  = (Hg⁺ • 15)

By formula: (Hg⁺ • 14Hg) + Hg = (Hg⁺ • 15Hg)

(Hg⁺ • 15) +  = (Hg⁺ • 16)

By formula: (Hg⁺ • 15Hg) + Hg = (Hg⁺ • 16Hg)

(Hg⁺ • 16) +  = (Hg⁺ • 17)

By formula: (Hg⁺ • 16Hg) + Hg = (Hg⁺ • 17Hg)

(Hg⁺ • 17) +  = (Hg⁺ • 18)

By formula: (Hg⁺ • 17Hg) + Hg = (Hg⁺ • 18Hg)

(Hg⁺ • 18) +  = (Hg⁺ • 19)

By formula: (Hg⁺ • 18Hg) + Hg = (Hg⁺ • 19Hg)

(Hg⁺ • 19) +  = (Hg⁺ • 20)

By formula: (Hg⁺ • 19Hg) + Hg = (Hg⁺ • 20Hg)

(Hg⁺ • 9) +  = (Hg⁺ • 10)

By formula: (Hg⁺ • 9Hg) + Hg = (Hg⁺ • 10Hg)

(Hg⁺ • 5) +  = (Hg⁺ • 6)

By formula: (Hg⁺ • 5Hg) + Hg = (Hg⁺ • 6Hg)

(Hg⁺ • 6) +  = (Hg⁺ • 7)

By formula: (Hg⁺ • 6Hg) + Hg = (Hg⁺ • 7Hg)

(Hg⁺ • 7) +  = (Hg⁺ • 8)

By formula: (Hg⁺ • 7Hg) + Hg = (Hg⁺ • 8Hg)

(Hg⁺ • 8) +  = (Hg⁺ • 9)

By formula: (Hg⁺ • 8Hg) + Hg = (Hg⁺ • 9Hg)

(Hg⁺ • 4) +  = (Hg⁺ • 5)

By formula: (Hg⁺ • 4Hg) + Hg = (Hg⁺ • 5Hg)

Hg⁺ +  = (Hg⁺ • )

By formula: Hg⁺ + Hg = (Hg⁺ • Hg)

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 evaluated as indicated in comments:
L - Sharon G. Lias

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

View reactions leading to Hg⁺ (ion structure unspecified)

Ionization energy determinations

References

Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change data, Reaction thermochemistry 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.

Cox, Wagman, et al., 1984
Cox, J.D.; Wagman, D.D.; Medvedev, V.A., CODATA Key Values for Thermodynamics, Hemisphere Publishing Corp., New York, 1984, 1. [all data]

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

Marsh, 1987
Marsh, K.N., Recommended Reference Materials for the Realization of Physicochemical Properties, Blackwell Sci. Pub., Oxford, 1987. [all data]

Honig and Kramer, 1969
Honig, R.E.; Kramer, D.A., Vapor pressure data for the solid and liquid elements, RCA Rev., 1969, 1969, 285. [all data]

Anonymous, 1988
Anonymous, X., , NBS Spec. Publ. (U. S.) 260, 1988. [all data]

Timmermans, 1911
Timmermans, J., Researches on the freezing point of organic liquid compounds, Bull. Soc. Chim. Belg., 1911, 25, 300. [all data]

Menzies, 1913
Menzies, A.W.C., The Critical Temperature of Mercury, J. Am. Chem. Soc., 1913, 35, 1065. [all data]

Hicks, 1963
Hicks, W.T., Evaluation of Vapor-Pressure Data of Mercury, Lithium, Sodium, and Potassium, J. Chem. Phys., 1963, 38, 8, 1873-1880, https://doi.org/10.1063/1.1733889 . [all data]

Haberland, Kornmeier, et al., 1990
Haberland, H.; Kornmeier, H.; Langosh, H.; Oschwald, M.; Tanner, G., Experimental Study of the Transition from van der Waals, over Covalent to Metallic Bonding in Mercury Clusters, J. Chem. Soc. Faraday Trans., 1990, 86, 13, 2473, https://doi.org/10.1039/ft9908602473 . [all data]

Lide, 1992
Lide, D.R. (Editor), Ionization potentials of atoms and atomic ions in Handbook of Chem. and Phys., 1992, 10-211. [all data]

Hoareau, Cabaud, et al., 1981
Hoareau, A.; Cabaud, B.; Melinon, P., Time-of-flight mass spectroscopy of supersonic beam of metallic vapours: Intensities and appearance potentials of Mx aggregates, Surf. Sci., 1981, 106, 195. [all data]

Cabaud, Hoareau, et al., 1972
Cabaud, B.; Hoareau, A.; Nounou, P.; Uzan, R., Etude des processus d'ionisation a haute temperature des vapeurs metalliques par couplage d'une cellule de knudsen et d'une source fox. II. Interpretation des processus d'autoionisation des vapeurs metalliques monoatomiques et influence delatemperature sur les courbes d'efficacite d'ionisation., Int. J. Mass Spectrom. Ion Phys., 1972, 8, 181. [all data]

Blake, 1971
Blake, A.J., Photoionization study of mercury by photoelectron spectroscopy, Proc. R. Soc. London A:, 1971, 325, 555. [all data]

Moore, 1970
Moore, C.E., Ionization potentials and ionization limits derived from the analyses of optical spectra, Natl. Stand. Ref. Data Ser., (U.S. Natl. Bur. Stand.), 1970, 34, 1. [all data]

Hotop and Niehaus, 1969
Hotop, H.; Niehaus, A., Reactions of excited atoms molecules with atoms and molecules. II. Energy analysis of penning electrons, Z. Phys., 1969, 228, 68. [all data]

Frost, McDowell, et al., 1967
Frost, D.C.; McDowell, C.A.; Vroom, D.A., Ionization potentials of mercury by photoetectron spectrometry, Chem. Phys. Lett., 1967, 1, 93. [all data]

Beutler, 1933
Beutler, H., Uber Absorptionsspektren aus der Anregung innerer Elektronen. II.Das Quecksilberspektrum zwischen 1190 und 600 A aus der Anregung der (5 d)1O-Schale (Hg 1b), Z. Physik, 1933, 86, 710. [all data]

Notes

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

• Symbols used in this document:
  

  IE (evaluated)	Recommended ionization energy
  S°gas,1 bar	Entropy of gas at standard conditions (1 bar)
  S°liquid	Entropy of liquid at standard conditions
  Tboil	Boiling point
  Tc	Critical temperature
  Tfus	Fusion (melting) point
  Ttriple	Triple point temperature
  ΔfH°gas	Enthalpy of formation of gas at standard conditions
  ΔrH°	Enthalpy of reaction at standard conditions

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