aluminium oxide
- Formula: Al2O3
- Molecular weight: 101.9613
- CAS Registry Number: 1344-28-1
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Condensed phase thermochemistry data
Go To: Top, Vibrational and/or electronic energy levels, 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°liquid | -1620.57 | kJ/mol | Review | Chase, 1998 | Data last reviewed in December, 1979 |
| Quantity | Value | Units | Method | Reference | Comment |
| S°liquid,1 bar | 67.24 | J/mol*K | Review | Chase, 1998 | Data last reviewed in December, 1979 |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔfH°solid | -1675.7 ± 1.3 | kJ/mol | Review | Cox, Wagman, et al., 1984 | corundum phase; CODATA Review value |
| ΔfH°solid | -1675.69 | kJ/mol | Review | Chase, 1998 | α phase; Data last reviewed in December, 1979 |
| Quantity | Value | Units | Method | Reference | Comment |
| S°solid,1 bar | 50.92 ± 0.10 | J/mol*K | Review | Cox, Wagman, et al., 1984 | corundum phase; CODATA Review value |
Liquid 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 (J/mol*K)
H° = standard enthalpy (kJ/mol)
S° = standard entropy (J/mol*K)
t = temperature (K) / 1000.
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| Temperature (K) | 2327. to 4000. |
|---|---|
| A | 192.4640 |
| B | 9.519856×10-8 |
| C | -2.858928×10-8 |
| D | 2.929147×10-9 |
| E | 5.599405×10-8 |
| F | -1757.711 |
| G | 177.1008 |
| H | -1620.568 |
| Reference | Chase, 1998 |
| Comment | Data last reviewed in December, 1979 |
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 (J/mol*K)
H° = standard enthalpy (kJ/mol)
S° = standard entropy (J/mol*K)
t = temperature (K) / 1000.
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| Temperature (K) | 298. to 2327. | 298. to 2327. | 298. to 2327. | 298. to 2327. |
|---|---|---|---|---|
| A | 102.4290 | 108.6830 | 106.9180 | 106.0880 |
| B | 38.74980 | 37.22630 | 36.62190 | 36.33740 |
| C | -15.91090 | -14.20650 | -13.97590 | -13.86730 |
| D | 2.628181 | 2.193601 | 2.157990 | 2.141221 |
| E | -3.007551 | -3.209881 | -3.157761 | -3.133231 |
| F | -1717.930 | -1701.600 | -1710.500 | -1705.970 |
| G | 146.9970 | 155.1360 | 151.7920 | 153.9350 |
| H | -1675.690 | -1656.860 | -1666.490 | -1662.300 |
| Reference | Chase, 1998 | Chase, 1998 | Chase, 1998 | Chase, 1998 |
| Comment | α phase; Data last reviewed in December, 1979 | γ phase; Data last reviewed in December, 1979 | δ phase; Data last reviewed in December, 1979 | kappa phase; Data last reviewed in December, 1979 |
Vibrational and/or electronic energy levels
Go To: Top, Condensed phase thermochemistry data, References, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Data compiled by: Marilyn E. Jacox
State: B
| Energy (cm-1) |
Med. | Transition | λmin (nm) |
λmax (nm) |
References | ||
|---|---|---|---|---|---|---|---|
| To = 9600 ± 640 | gas | Desai, Wu, et al., 1997 | |||||
State: A
| Energy (cm-1) |
Med. | Transition | λmin (nm) |
λmax (nm) |
References | ||
|---|---|---|---|---|---|---|---|
| To = 4920 ± 160 | gas | Desai, Wu, et al., 1997 | |||||
State: X
| Vib. sym. |
No. | Approximate type of mode |
cm-1 | Med. | Method | References | |
|---|---|---|---|---|---|---|---|
| 1211.2 | Ar | IR | Andrews, Burkholder, et al., 1992 | ||||
| Sym. stretch | 850 ± 80 | gas | PE | Desai, Wu, et al., 1997 | |||
Additional references: Jacox, 1994, page 283; Jacox, 1998, page 297
Notes
| o | Energy separation between the v = 0 levels of the excited and electronic ground states. |
References
Go To: Top, Condensed phase thermochemistry data, Vibrational and/or electronic energy levels, 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]
Desai, Wu, et al., 1997
Desai, S.R.; Wu, H.; Rohlfing, C.M.; Wang, L.-S.,
A Study of the Structure and Bonding of Small Aluminum Oxide Clusters by Photoelectron Spectroscopy: AlxOy- (x=1-2, y=1-5),
J. Chem. Phys., 1997, 106, 4, 1309, https://doi.org/10.1063/1.474085
. [all data]
Andrews, Burkholder, et al., 1992
Andrews, L.; Burkholder, T.R.; Yustein, J.T.,
Reactions of pulsed-laser evaporated aluminum atoms with oxygen: infrared spectra of the reaction products in solid argon,
J. Phys. Chem., 1992, 96, 25, 10182, https://doi.org/10.1021/j100204a018
. [all data]
Jacox, 1994
Jacox, M.E.,
Vibrational and electronic energy levels of polyatomic transient molecules, American Chemical Society, Washington, DC, 1994, 464. [all data]
Jacox, 1998
Jacox, M.E.,
Vibrational and electronic energy levels of polyatomic transient molecules: supplement A,
J. Phys. Chem. Ref. Data, 1998, 27, 2, 115-393, https://doi.org/10.1063/1.556017
. [all data]
Notes
Go To: Top, Condensed phase thermochemistry data, Vibrational and/or electronic energy levels, References
- Symbols used in this document:
S°liquid,1 bar Entropy of liquid at standard conditions (1 bar) S°solid,1 bar Entropy of solid at standard conditions (1 bar) ΔfH°liquid Enthalpy of formation of liquid 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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