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 | 8.599 | kcal/mol | Review | Chase, 1998 | Data last reviewed in June, 1969 |
| Quantity | Value | Units | Method | Reference | Comment |
| S°gas,1 bar | 53.872 | cal/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 (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 600. | 600. to 6000. |
|---|---|---|
| A | 7.521781 | 12.94920 |
| B | 12.92290 | 1.265120 |
| C | -11.75560 | -0.286804 |
| D | 4.971870 | 0.021677 |
| E | -0.031007 | -0.599714 |
| F | 5.772900 | 2.995720 |
| G | 59.42641 | 66.68449 |
| H | 8.599910 | 8.599910 |
| Reference | Chase, 1998 | Chase, 1998 |
| Comment | Data last reviewed in June, 1969 | Data last reviewed in June, 1969 |
Phase change data
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 as indicated in comments:
AC - William E. Acree, Jr., James S. Chickos
Enthalpy of vaporization
| ΔvapH (kcal/mol) | Temperature (K) | Method | Reference | Comment |
|---|---|---|---|---|
| 5.35 | 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 (atm)
T = temperature (K)
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| Temperature (K) | A | B | C | Reference | Comment |
|---|---|---|---|---|---|
| 196.8 to 226.4 | 3.83450 | 677.148 | -50.579 | Fawcett and Lipscomb, 1964 | Coefficents calculated by NIST from author's data. |
Enthalpy of sublimation
| ΔsubH (kcal/mol) | Temperature (K) | Method | Reference | Comment |
|---|---|---|---|---|
| 6.91 | 176. | A | Stephenson and Malanowski, 1987 | Based on data from 147. to 191. K. See also Fawcett and Lipscomb, 1964.; AC |
| 5.83 | 166. | N/A | Stull, 1947 | Based on data from 139. to 192. K.; AC |
| 7.00 | 168. | N/A | Cosslett, 1931 | Based on data from 133. to 203. K.; AC |
References
Go To: Top, Gas phase thermochemistry data, Phase change data, 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]
Notes
Go To: Top, Gas phase thermochemistry data, Phase change data, 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 ΔsubH Enthalpy of sublimation ΔvapH Enthalpy of vaporization - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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