mercury monoxide
- Formula: HgO
- Molecular weight: 216.59
- IUPAC Standard InChI: InChI=1S/Hg.O
- IUPAC Standard InChIKey: UKWHYYKOEPRTIC-UHFFFAOYSA-N
- CAS Registry Number: 21908-53-2
- 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. - Other names: Mercury(ii) oxide
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Gas phase thermochemistry data
Go To: Top, Condensed phase thermochemistry data, Constants of diatomic molecules, NIST Free Links, References, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔfH°gas | 10.00 | kcal/mol | Review | Chase, 1998 | Data last reviewed in June, 1962 |
| Quantity | Value | Units | Method | Reference | Comment |
| S°gas,1 bar | 57.153 | cal/mol*K | Review | Chase, 1998 | Data last reviewed in June, 1962 |
Gas Phase Heat Capacity (Shomate Equation)
Cp° = 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
Cp = heat capacity (cal/mol*K)
H° = standard enthalpy (kcal/mol)
S° = standard entropy (cal/mol*K)
t = temperature (K) / 1000.
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| Temperature (K) | 298. to 6000. |
|---|---|
| A | 8.704561 |
| B | 0.307162 |
| C | -0.054106 |
| D | 0.004601 |
| E | -0.086077 |
| F | 7.103022 |
| G | 67.11350 |
| H | 10.00000 |
| Reference | Chase, 1998 |
| Comment | Data last reviewed in June, 1962 |
Condensed phase thermochemistry data
Go To: Top, Gas phase thermochemistry data, Constants of diatomic molecules, NIST Free Links, References, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔfH°solid | -21.70 ± 0.029 | kcal/mol | Review | Cox, Wagman, et al., 1984 | red phase; CODATA Review value |
| ΔfH°solid | -21.70 | kcal/mol | Review | Chase, 1998 | Data last reviewed in June, 1962 |
| Quantity | Value | Units | Method | Reference | Comment |
| S°solid,1 bar | 16.79 ± 0.072 | cal/mol*K | Review | Cox, Wagman, et al., 1984 | red phase; CODATA Review value |
| Quantity | Value | Units | Method | Reference | Comment |
| S°solid | 16.79 | cal/mol*K | Review | Chase, 1998 | Data last reviewed in June, 1962 |
Solid Phase Heat Capacity (Shomate Equation)
Cp° = 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
Cp = heat capacity (cal/mol*K)
H° = standard enthalpy (kcal/mol)
S° = standard entropy (cal/mol*K)
t = temperature (K) / 1000.
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| Temperature (K) | 298. to 1000. |
|---|---|
| A | 6.597211 |
| B | 17.58020 |
| C | -13.98100 |
| D | 4.020792 |
| E | -0.015326 |
| F | -24.38389 |
| G | 20.03540 |
| H | -21.69910 |
| Reference | Chase, 1998 |
| Comment | Data last reviewed in June, 1962 |
Constants of diatomic molecules
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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: Klaus P. Huber and Gerhard H. Herzberg
Data collected through February, 1975
| Symbol | Meaning |
|---|---|
| State | electronic state and / or symmetry symbol |
| Te | minimum electronic energy (cm-1) |
| ωe | vibrational constant – first term (cm-1) |
| ωexe | vibrational constant – second term (cm-1) |
| ωeye | vibrational constant – third term (cm-1) |
| Be | rotational constant in equilibrium position (cm-1) |
| αe | rotational constant – first term (cm-1) |
| γe | rotation-vibration interaction constant (cm-1) |
| De | centrifugal distortion constant (cm-1) |
| βe | rotational constant – first term, centrifugal force (cm-1) |
| re | internuclear distance (Å) |
| Trans. | observed transition(s) corresponding to electronic state |
| ν00 | position of 0-0 band (units noted in table) |
| State | Te | ωe | ωexe | ωeye | Be | αe | γe | De | βe | re | Trans. | ν00 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absorption bands in the region 33900 - 36500 cm-1, usually ascribed to Hg2 ("wing" bands), were tentatively assigned to HgO by Walter and Barratt, 1929. | ||||||||||||
References
Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Constants of diatomic molecules, NIST Free Links, 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]
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]
Walter and Barratt, 1929
Walter, J.M.; Barratt, S.,
The band spectra associated with zinc, cadmium, and mercury,
Proc. R. Soc. London A, 1929, 122, 201. [all data]
Notes
Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Constants of diatomic molecules, NIST Free Links, References
- Symbols used in this document:
S°gas,1 bar Entropy of gas at standard conditions (1 bar) S°solid Entropy of solid at standard conditions S°solid,1 bar Entropy of solid at standard conditions (1 bar) ΔfH°gas Enthalpy of formation of gas at standard conditions ΔfH°solid Enthalpy of formation of solid at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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