Tetrafluoromethane
- Formula: CF4
- Molecular weight: 88.0043
- IUPAC Standard InChI: InChI=1S/CF4/c2-1(3,4)5
- IUPAC Standard InChIKey: TXEYQDLBPFQVAA-UHFFFAOYSA-N
- CAS Registry Number: 75-73-0
- Chemical structure:
This structure is also available as a 2d Mol file or as a computed 3d SD file
View 3d structure (requires JavaScript / HTML 5) - Other names: Carbon tetrafluoride; Methane, tetrafluoro-; Arcton 0; Carbon fluoride (CF4); Freon 14; FC 14; Perfluoromethane; CF4; Halon 14; Carbon fluoride; F 14; Halocarbon 14; R 14; UN 1982; Refrigerant 14; CFC 14; R 14 (Refrigerant); Refrigerant R 14; Methane, tetrafluo-
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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.
Data compiled as indicated in comments:
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔfH°gas | -930. ± 20. | kJ/mol | AVG | N/A | Average of 12 out of 13 values; Individual data points |
| Quantity | Value | Units | Method | Reference | Comment |
| S°gas,1 bar | 261.41 | J/mol*K | Review | Chase, 1998 | Data last reviewed in June, 1969 |
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 (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 1000. | 1000. to 6000. |
|---|---|---|
| A | 15.96778 | 106.2221 |
| B | 210.3318 | 1.076122 |
| C | -189.4657 | -0.223192 |
| D | 62.20227 | 0.015753 |
| E | -0.217317 | -8.340679 |
| F | -946.4877 | -987.7755 |
| G | 224.6766 | 355.9764 |
| H | -933.1994 | -933.1994 |
| Reference | Chase, 1998 | Chase, 1998 |
| Comment | Data last reviewed in June, 1969 | Data last reviewed in June, 1969 |
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.
Data compiled as indicated in comments:
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
DH - Eugene S. Domalski and Elizabeth D. Hearing
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔcH°liquid | -1519.89 | kJ/mol | Ccb | Price and Sapiano, 1979 | ALS |
| ΔcH°liquid | -2222.3 | kJ/mol | Ccb | Krech, Price, et al., 1973 | ALS |
| Quantity | Value | Units | Method | Reference | Comment |
| S°liquid | 143.97 | J/mol*K | N/A | Smith and Pace, 1969 | DH |
Constant pressure heat capacity of liquid
| Cp,liquid (J/mol*K) | Temperature (K) | Reference | Comment |
|---|---|---|---|
| 80.08 | 145. | Smith and Pace, 1969 | T = 12 to 145 K. See also 69SMI/PAC.; DH |
IR Spectrum
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Data compiled by: Coblentz Society, Inc.
Data compiled by: NIST Mass Spectrometry Data Center, William E. Wallace, director
Data compiled by: Pamela M. Chu, Franklin R. Guenther, George C. Rhoderick, and Walter J. Lafferty
- gas; IFS66V (Bruker); 3-Term B-H Apodization
0.1250, 0.2410, 0.4820, 0.9640, 1.9290 cm-1 resolution - gas; IFS66V (Bruker); Boxcar Apodization
0.1250, 0.2410, 0.4820, 0.9640, 1.9290 cm-1 resolution - gas; IFS66V (Bruker); Happ Genzel Apodization
0.1250, 0.2410, 0.4820, 0.9640, 1.9290 cm-1 resolution - gas; IFS66V (Bruker); NB Strong Apodization
0.1250, 0.2410, 0.4820, 0.9640, 1.9290 cm-1 resolution - gas; IFS66V (Bruker); Triangular Apodization
0.1250, 0.2410, 0.4820, 0.9640, 1.9290 cm-1 resolution
Vibrational and/or electronic energy levels
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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: Takehiko Shimanouchi
Symmetry: Td Symmetry Number σ = 12
| Sym. | No | Approximate | Selected Freq. | Infrared | Raman | Comments | ||||
|---|---|---|---|---|---|---|---|---|---|---|
| Species | type of mode | Value | Rating | Value | Phase | Value | Phase | |||
| a1 | 1 | Sym str | 909 | B | ia | 908.5 S | gas | |||
| e | 2 | Deg deform | 435 | B | ia | 435.0 S | gas | |||
| f2 | 3 | Deg str | 1281 | D | ? | gas | ? | gas | FR(2ν4) | |
| f2 | 4 | Deg deform | 632 | B | 631.73 VS | gas | 631.2 S | gas | ||
Source: Shimanouchi, 1972
Notes
| VS | Very strong |
| S | Strong |
| ia | Inactive |
| FR | Fermi resonance with an overtone or a combination tone indicated in the parentheses. |
| B | 1~3 cm-1 uncertainty |
| D | 6~15 cm-1 uncertainty |
References
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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]
Price and Sapiano, 1979
Price, S.J.W.; Sapiano, H.J.,
Determination of ΔH°f298(C6F10,g) and ΔH°f298(C6F12,g) from studies of the combustion of decafluorocyclohexene and dodecafluorocylohexene in oxygen and calculation of the resonance energy of hexafluorobenzene,
Can. J. Chem., 1979, 58, 685-688. [all data]
Krech, Price, et al., 1973
Krech, M.J.; Price, S.J.W.; Yared, W.F.,
Determination of the heat of formation of octafluorotoluene and calculation of D[C6F5-F] - D[C6F5-CF3],
Can. J. Chem., 1973, 51, 3662-3664. [all data]
Smith and Pace, 1969
Smith, J.H.; Pace, E.L.,
The thermodynamic properties of carbon tetrafluoride from 12°K to its boiling point. The significance of the parameter {nu},
J. Phys. Chem., 1969, 73, 4232-4236. [all data]
Shimanouchi, 1972
Shimanouchi, T.,
Tables of Molecular Vibrational Frequencies Consolidated Volume I, National Bureau of Standards, 1972, 1-160. [all data]
Notes
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- Symbols used in this document:
Cp,liquid Constant pressure heat capacity of liquid S°gas,1 bar Entropy of gas at standard conditions (1 bar) S°liquid Entropy of liquid at standard conditions ΔcH°liquid Enthalpy of combustion of liquid at standard conditions ΔfH°gas Enthalpy of formation of gas at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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