Cyanogen fluoride
- Formula: CFN
- Molecular weight: 45.0158
- CAS Registry Number: 1495-50-7
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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.
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔfH°gas | 35.98 | kJ/mol | Review | Chase, 1998 | Data last reviewed in June, 1969 |
| Quantity | Value | Units | Method | Reference | Comment |
| S°gas,1 bar | 225.40 | 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 600. | 600. to 6000. |
|---|---|---|
| A | 31.47113 | 54.17945 |
| B | 54.06941 | 5.293262 |
| C | -49.18543 | -1.199989 |
| D | 20.80230 | 0.090697 |
| E | -0.129733 | -2.509203 |
| F | 24.15381 | 12.53409 |
| G | 248.6401 | 279.0079 |
| H | 35.98202 | 35.98202 |
| Reference | Chase, 1998 | Chase, 1998 |
| Comment | Data last reviewed in June, 1969 | Data last reviewed in June, 1969 |
Phase change 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:
AC - William E. Acree, Jr., James S. Chickos
Enthalpy of vaporization
| ΔvapH (kJ/mol) | Temperature (K) | Method | Reference | Comment |
|---|---|---|---|---|
| 22.4 | 214. | A | Stephenson and Malanowski, 1987 | Based on data from 201. to 227. K. See also Fawcett and Lipscomb, 1964 and Dykyj, 1970.; AC |
Antoine Equation Parameters
log10(P) = A − (B / (T + C))
P = vapor pressure (bar)
T = temperature (K)
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| Temperature (K) | A | B | C | Reference | Comment |
|---|---|---|---|---|---|
| 196.8 to 226.4 | 3.84021 | 677.148 | -50.579 | Fawcett and Lipscomb, 1964 | Coefficents calculated by NIST from author's data. |
Enthalpy of sublimation
| ΔsubH (kJ/mol) | Temperature (K) | Method | Reference | Comment |
|---|---|---|---|---|
| 28.9 | 176. | A | Stephenson and Malanowski, 1987 | Based on data from 147. to 191. K. See also Fawcett and Lipscomb, 1964.; AC |
| 24.4 | 166. | N/A | Stull, 1947 | Based on data from 139. to 192. K.; AC |
| 29.3 | 168. | N/A | Cosslett, 1931 | Based on data from 133. to 203. K.; AC |
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: Cxν Symmetry Number σ = 1
| Sym. | No | Approximate | Selected Freq. | Infrared | Raman | Comments | ||||
|---|---|---|---|---|---|---|---|---|---|---|
| Species | type of mode | Value | Rating | Value | Phase | Value | Phase | |||
| σ+ | 1 | CN str | 2323 | C | 2323 | gas | ||||
| π | 2 | Deform | 451 | A | 451.32 | gas | ||||
| σ+ | 3 | CF str | 1077 | A | 1076.52 | gas | ||||
Source: Shimanouchi, 1972
Notes
| A | 0~1 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]
Stephenson and Malanowski, 1987
Stephenson, Richard M.; Malanowski, Stanislaw,
Handbook of the Thermodynamics of Organic Compounds, 1987, https://doi.org/10.1007/978-94-009-3173-2
. [all data]
Fawcett and Lipscomb, 1964
Fawcett, F.S.; Lipscomb, R.D.,
Cyanogen Fluoride: Synthesis and Properties,
J. Am. Chem. Soc., 1964, 86, 13, 2576-2579, https://doi.org/10.1021/ja01067a011
. [all data]
Dykyj, 1970
Dykyj, J.,
Petrochemica, 1970, 10, 2, 51. [all data]
Stull, 1947
Stull, Daniel R.,
Vapor Pressure of Pure Substances. Organic and Inorganic Compounds,
Ind. Eng. Chem., 1947, 39, 4, 517-540, https://doi.org/10.1021/ie50448a022
. [all data]
Cosslett, 1931
Cosslett, Vernon Ellis,
Darstellung und Eigenschaften von Fluorcyan,
Z. Anorg. Allg. Chem., 1931, 201, 1, 75-80, https://doi.org/10.1002/zaac.19312010108
. [all data]
Shimanouchi, 1972
Shimanouchi, T.,
Tables of Molecular Vibrational Frequencies Consolidated Volume II,
J. Phys. Chem. Ref. Data, 1972, 6, 3, 993-1102. [all data]
Notes
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- 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 ΔsubH Enthalpy of sublimation ΔvapH Enthalpy of vaporization - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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