Aluminum difluoride
- Formula: AlF2
- Molecular weight: 64.9783450
- CAS Registry Number: 13569-23-8
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Gas 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°gas | -166.00 | kcal/mol | Review | Chase, 1998 | Data last reviewed in June, 1976 |
| Quantity | Value | Units | Method | Reference | Comment |
| S°gas,1 bar | 63.145 | cal/mol*K | Review | Chase, 1998 | Data last reviewed in June, 1976 |
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 2000. | 2000. to 6000. |
|---|---|---|
| A | 11.24060 | 15.09560 |
| B | 4.690271 | -0.717936 |
| C | -2.953000 | 0.141589 |
| D | 0.630050 | -0.006479 |
| E | -0.129184 | -1.532401 |
| F | -169.9690 | -173.2680 |
| G | 74.74849 | 78.22710 |
| H | -166.0000 | -166.0000 |
| Reference | Chase, 1998 | Chase, 1998 |
| Comment | Data last reviewed in June, 1976 | Data last reviewed in June, 1976 |
Vibrational and/or electronic energy levels
Go To: Top, Gas 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: X
| Vib. sym. |
No. | Approximate type of mode |
cm-1 | Med. | Method | References | |
|---|---|---|---|---|---|---|---|
| a1 | 1 | Sym. stretch | 755.3 | Ar | IR | Hassanzadeh, Citra, et al., 1996 Davlyatshin and Osin, 1997 | |
| 2 | Bend | 253.7 | Ar | IR | Davlyatshin and Osin, 1997 | ||
| b2 | 3 | Asym. stretch | 887.5 | Ar | IR | Hassanzadeh, Citra, et al., 1996 Davlyatshin and Osin, 1997 | |
Additional references: Jacox, 1998, page 192; Jacox, 2003, page 134
References
Go To: Top, Gas 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]
Hassanzadeh, Citra, et al., 1996
Hassanzadeh, P.; Citra, A.; Andrews, L.; Neurock, M.,
Laser-Evaporated Aluminum Atom Reactions with Halogen Molecules. Infrared Spectra of AlX,
J. Phys. Chem., 1996, 100, 18, 7317, https://doi.org/10.1021/jp953065a
. [all data]
Davlyatshin and Osin, 1997
Davlyatshin, D.I.; Osin, S.B.,
Vestn. Mosk. Univ., 1997, Ser. 2: Khim. 38, 306. [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]
Jacox, 2003
Jacox, M.E.,
Vibrational and electronic energy levels of polyatomic transient molecules: supplement B,
J. Phys. Chem. Ref. Data, 2003, 32, 1, 1-441, https://doi.org/10.1063/1.1497629
. [all data]
Notes
Go To: Top, Gas phase thermochemistry data, Vibrational and/or electronic energy levels, References
- Symbols used in this document:
S°gas,1 bar Entropy of gas at standard conditions (1 bar) ΔfH°gas Enthalpy of formation of gas at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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