Cyano radical
- Formula: CN
- Molecular weight: 26.0174
- IUPAC Standard InChI: InChI=1S/CN/c1-2
- IUPAC Standard InChIKey: JEVCWSUVFOYBFI-UHFFFAOYSA-N
- CAS Registry Number: 2074-87-5
- Chemical structure:
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Gas Phase Heat Capacity (Shomate Equation)
Go To: Top, References, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
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 1100. | 1100. to 6000. |
|---|---|---|
| A | 6.292730 | 5.023091 |
| B | 0.794145 | 2.335230 |
| C | 2.053271 | -0.244415 |
| D | -1.165271 | 0.003292 |
| E | 0.025587 | 1.085430 |
| F | 102.1590 | 104.1830 |
| G | 55.87440 | 55.61429 |
| H | 104.0000 | 104.0000 |
| Reference | Chase, 1998 | Chase, 1998 |
| Comment | Data last reviewed in June, 1969 | Data last reviewed in June, 1969 |
| Temperature (K) |
Cp (cal/mol*K) |
S° (cal/mol*K) |
-(G° - H°298.15)/T (cal/mol*K) |
H° - H°298.15 (kcal/mol) |
|---|---|---|---|---|
| 298. | 6.97 | 48.43 | 48.43 | -0.00 |
| 300. | 6.97 | 48.48 | 48.43 | 0.01 |
| 400. | 7.02 | 50.49 | 48.71 | 0.71 |
| 500. | 7.16 | 52.07 | 49.22 | 1.42 |
| 600. | 7.33 | 53.39 | 49.81 | 2.15 |
| 700. | 7.51 | 54.53 | 50.41 | 2.89 |
| 800. | 7.69 | 55.54 | 50.99 | 3.65 |
| 900. | 7.85 | 56.46 | 51.54 | 4.42 |
| 1000. | 8.00 | 57.29 | 52.08 | 5.22 |
| 1100. | 8.12 | 58.06 | 52.59 | 6.02 |
| Temperature (K) |
Cp (cal/mol*K) |
S° (cal/mol*K) |
-(G° - H°298.15)/T (cal/mol*K) |
H° - H°298.15 (kcal/mol) |
|---|---|---|---|---|
| 1100. | 8.20 | 58.07 | 52.59 | 6.03 |
| 1200. | 8.23 | 58.78 | 53.07 | 6.85 |
| 1300. | 8.30 | 59.44 | 53.54 | 7.67 |
| 1400. | 8.38 | 60.06 | 53.98 | 8.51 |
| 1500. | 8.47 | 60.64 | 54.41 | 9.35 |
| 1600. | 8.57 | 61.19 | 54.81 | 10.20 |
| 1700. | 8.68 | 61.71 | 55.21 | 11.06 |
| 1800. | 8.79 | 62.21 | 55.58 | 11.94 |
| 1900. | 8.90 | 62.69 | 55.94 | 12.82 |
| 2000. | 9.01 | 63.15 | 56.29 | 13.72 |
| 2100. | 9.13 | 63.59 | 56.63 | 14.63 |
| 2200. | 9.24 | 64.02 | 56.96 | 15.54 |
| 2300. | 9.35 | 64.43 | 57.27 | 16.47 |
| 2400. | 9.45 | 64.83 | 57.58 | 17.41 |
| 2500. | 9.56 | 65.22 | 57.88 | 18.36 |
| 2600. | 9.66 | 65.60 | 58.17 | 19.32 |
| 2700. | 9.76 | 65.96 | 58.45 | 20.30 |
| 2800. | 9.86 | 66.32 | 58.72 | 21.28 |
| 2900. | 9.95 | 66.67 | 58.99 | 22.27 |
| 3000. | 10.04 | 67.01 | 59.25 | 23.27 |
| 3100. | 10.12 | 67.34 | 59.51 | 24.27 |
| 3200. | 10.21 | 67.66 | 59.76 | 25.29 |
| 3300. | 10.29 | 67.98 | 60.00 | 26.32 |
| 3400. | 10.36 | 68.28 | 60.24 | 27.35 |
| 3500. | 10.43 | 68.59 | 60.48 | 28.39 |
| 3600. | 10.50 | 68.88 | 60.70 | 29.43 |
| 3700. | 10.56 | 69.17 | 60.93 | 30.49 |
| 3800. | 10.62 | 69.45 | 61.15 | 31.55 |
| 3900. | 10.68 | 69.73 | 61.37 | 32.61 |
| 4000. | 10.73 | 70.00 | 61.58 | 33.68 |
| 4100. | 10.78 | 70.27 | 61.79 | 34.76 |
| 4200. | 10.82 | 70.53 | 61.99 | 35.84 |
| 4300. | 10.87 | 70.78 | 62.19 | 36.92 |
| 4400. | 10.90 | 71.03 | 62.39 | 38.01 |
| 4500. | 10.94 | 71.28 | 62.59 | 39.10 |
| 4600. | 10.97 | 71.52 | 62.78 | 40.20 |
| 4700. | 10.99 | 71.75 | 62.97 | 41.30 |
| 4800. | 11.01 | 71.98 | 63.15 | 42.40 |
| 4900. | 11.03 | 72.21 | 63.33 | 43.50 |
| 5000. | 11.04 | 72.44 | 63.51 | 44.60 |
| 5100. | 11.05 | 72.65 | 63.69 | 45.71 |
| 5200. | 11.06 | 72.87 | 63.87 | 46.81 |
| 5300. | 11.06 | 73.08 | 64.04 | 47.92 |
| 5400. | 11.06 | 73.29 | 64.21 | 49.03 |
| 5500. | 11.06 | 73.49 | 64.37 | 50.13 |
| 5600. | 11.05 | 73.69 | 64.54 | 51.24 |
| 5700. | 11.04 | 73.88 | 64.70 | 52.34 |
| 5800. | 11.02 | 74.08 | 64.86 | 53.44 |
| 5900. | 11.00 | 74.26 | 65.02 | 54.54 |
| 6000. | 10.98 | 74.45 | 65.17 | 55.64 |
References
Go To: Top, Gas Phase Heat Capacity (Shomate Equation), 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]
Notes
Go To: Top, Gas Phase Heat Capacity (Shomate Equation), References
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