Nitrogen trifluoride
- Formula: F3N
- Molecular weight: 71.0019
- IUPAC Standard InChI: InChI=1S/F3N/c1-4(2)3
- IUPAC Standard InChIKey: GVGCUCJTUSOZKP-UHFFFAOYSA-N
- CAS Registry Number: 7783-54-2
- 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: Trifluoroamine; Nitrogen fluoride (NF3); Nitrogen fluoride; Trifluoroammonia; Perfluoroammonia; NF3; UN 2451
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Gas phase thermochemistry data
Go To: Top, Phase change data, 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 | -31.570 | kcal/mol | Review | Chase, 1998 | Data last reviewed in June, 1977 |
| Quantity | Value | Units | Method | Reference | Comment |
| S°gas,1 bar | 62.326 | cal/mol*K | Review | Chase, 1998 | Data last reviewed in June, 1977 |
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 1000. | 1000. to 6000. |
|---|---|---|
| A | 6.323160 | 19.72940 |
| B | 34.00110 | 0.082631 |
| C | -32.89039 | -0.017194 |
| D | 11.39700 | 0.001216 |
| E | -0.096676 | -1.071341 |
| F | -35.02330 | -40.55361 |
| G | 60.65669 | 81.44981 |
| H | -31.57010 | -31.57010 |
| Reference | Chase, 1998 | Chase, 1998 |
| Comment | Data last reviewed in June, 1977 | Data last reviewed in June, 1977 |
Phase change data
Go To: Top, Gas phase thermochemistry data, 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.
Data compiled by: Thermodynamics Research Center, NIST Boulder Laboratories, Chris Muzny director
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| Tboil | 144. | K | N/A | Streng, 1971 | Uncertainty assigned by TRC = 1.5 K |
| Tboil | 144.2 | K | N/A | Menzel and Mohry, 1933 | Uncertainty assigned by TRC = 0.4 K |
| Quantity | Value | Units | Method | Reference | Comment |
| Tfus | 64.7 | K | N/A | Streng, 1971 | Uncertainty assigned by TRC = 0.5 K |
Vibrational and/or electronic energy levels
Go To: Top, Gas phase thermochemistry data, Phase change 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: Takehiko Shimanouchi
Symmetry: C3ν Symmetry Number σ = 3
| Sym. | No | Approximate | Selected Freq. | Infrared | Raman | Comments | ||||
|---|---|---|---|---|---|---|---|---|---|---|
| Species | type of mode | Value | Rating | Value | Phase | Value | Phase | |||
| a1 | 1 | Sym str | 1032 | B | 1032 S | gas | 1050 | liq. | ||
| a1 | 2 | Sym deform | 647 | B | 647 W | gas | 667 | liq. | ||
| e | 3 | Deg str | 907 | C | 907 S | gas | 905 | liq. | ||
| e | 4 | Deg deform | 492 | B | 492 W | gas | 515 | liq. | ||
Source: Shimanouchi, 1972
Notes
| S | Strong |
| W | Weak |
| B | 1~3 cm-1 uncertainty |
| C | 3~6 cm-1 uncertainty |
References
Go To: Top, Gas phase thermochemistry data, Phase change 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]
Streng, 1971
Streng, A.G.,
Miscibility and Compatibility of Some Liquid and Solidified Gases at Low Temperature,
J. Chem. Eng. Data, 1971, 16, 357. [all data]
Menzel and Mohry, 1933
Menzel, W.; Mohry, F.,
Vapor pressure of CF(4) and NF(3) and the triple point of CF(4).,
Z. Anorg. Allg. Chem., 1933, 210, 257. [all data]
Shimanouchi, 1972
Shimanouchi, T.,
Tables of Molecular Vibrational Frequencies Consolidated Volume I, National Bureau of Standards, 1972, 1-160. [all data]
Notes
Go To: Top, Gas phase thermochemistry data, Phase change 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) Tboil Boiling point Tfus Fusion (melting) point ΔfH°gas Enthalpy of formation of gas at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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