Carbon monophosphide
- Formula: CP
- Molecular weight: 42.9845
- IUPAC Standard InChI: InChI=1S/CP/c1-2
- IUPAC Standard InChIKey: GDPLAAHPHNAIGW-UHFFFAOYSA-N
- CAS Registry Number: 12326-85-1
- Chemical structure:
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Gas phase thermochemistry data
Go To: Top, Gas phase ion energetics data, 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 | 449.89 | kJ/mol | Review | Chase, 1998 | Data last reviewed in June, 1962 |
| Quantity | Value | Units | Method | Reference | Comment |
| S°gas,1 bar | 216.26 | J/mol*K | Review | Chase, 1998 | Data last reviewed in June, 1962 |
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 | 20.40704 | 36.00817 |
| B | 32.47654 | 1.177253 |
| C | -20.33098 | -0.222782 |
| D | 2.135368 | 0.017179 |
| E | 0.139662 | -1.192487 |
| F | 443.0103 | 435.6757 |
| G | 232.9388 | 254.3575 |
| H | 449.8930 | 449.8930 |
| Reference | Chase, 1998 | Chase, 1998 |
| Comment | Data last reviewed in June, 1962 | Data last reviewed in June, 1962 |
Gas phase ion energetics 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:
LLK - Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi
View reactions leading to CP+ (ion structure unspecified)
Ionization energy determinations
| IE (eV) | Method | Reference | Comment |
|---|---|---|---|
| 10.5 ± 0.5 | EI | Smoes, Myers, et al., 1971 | LLK |
References
Go To: Top, Gas phase thermochemistry data, Gas phase ion energetics 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]
Smoes, Myers, et al., 1971
Smoes, S.; Myers, C.E.; Drowart, J.,
Determination of the atomization energies of CP, C2P, CP2 and C2P2 by high temperature Knudsen cell mass spectrometry,
Chem. Phys. Lett., 1971, 8, 10. [all data]
Notes
Go To: Top, Gas phase thermochemistry data, Gas phase ion energetics 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 - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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