Phosphorus monoxide
- Formula: OP
- Molecular weight: 46.9732
- IUPAC Standard InChIKey: LFGREXWGYUGZLY-UHFFFAOYSA-N
- CAS Registry Number: 14452-66-5
- 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 | -23.55 | kJ/mol | Review | Chase, 1998 | Data last reviewed in June, 1971 |
Quantity | Value | Units | Method | Reference | Comment |
S°gas,1 bar | 222.78 | J/mol*K | Review | Chase, 1998 | Data last reviewed in June, 1971 |
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 | 24.28561 | 35.82830 |
B | 18.86465 | 1.413825 |
C | -1.520015 | -0.322620 |
D | -7.365932 | 0.030065 |
E | 0.194004 | -0.951312 |
F | -30.94863 | -36.97384 |
G | 247.7652 | 261.7816 |
H | -23.54801 | -23.54801 |
Reference | Chase, 1998 | Chase, 1998 |
Comment | Data last reviewed in June, 1971 | Data last reviewed in June, 1971 |
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 evaluated as indicated in comments:
HL - Edward P. Hunter and Sharon G. Lias
Data compiled as indicated in comments:
LBLHLM - Sharon G. Lias, John E. Bartmess, Joel F. Liebman, John L. Holmes, Rhoda D. Levin, and W. Gary Mallard
LLK - Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi
B - John E. Bartmess
View reactions leading to OP+ (ion structure unspecified)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
Proton affinity (review) | 682. | kJ/mol | N/A | Hunter and Lias, 1998 | HL |
Quantity | Value | Units | Method | Reference | Comment |
Gas basicity | 649.5 | kJ/mol | N/A | Hunter and Lias, 1998 | HL |
Electron affinity determinations
EA (eV) | Method | Reference | Comment |
---|---|---|---|
1.092 ± 0.010 | LPES | Zittel and Lineberger, 1976 | B |
1.00 ± 0.10 | Endo | Wu and Tiernan, 1982 | B |
Ionization energy determinations
IE (eV) | Method | Reference | Comment |
---|---|---|---|
8.39 ± 0.01 | PE | Dyke, Morris, et al., 1982 | LBLHLM |
8.9 ± 0.5 | EI | Balducci, Gigli, et al., 1981 | LLK |
8.373 | S | Ghosh and Verma, 1978 | LLK |
9.1 ± 0.5 | EI | Smoes, Drowart, et al., 1976 | LLK |
10.7 | EI | Gingerich and Miller, 1975 | LLK |
9.5 ± 0.5 | EI | Smoes and Drowart, 1973 | LLK |
9. ± 1. | EI | Drowart, Myers, et al., 1972 | LLK |
8.231 | S | Ackermann, Lefebvre-Brion, et al., 1972 | LLK |
8.38 | S | Verma, Dixit, 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]
Hunter and Lias, 1998
Hunter, E.P.; Lias, S.G.,
Evaluated Gas Phase Basicities and Proton Affinities of Molecules: An Update,
J. Phys. Chem. Ref. Data, 1998, 27, 3, 413-656, https://doi.org/10.1063/1.556018
. [all data]
Zittel and Lineberger, 1976
Zittel, P.F.; Lineberger, W.C.,
Laser photoelectron spectrometry of PO-, PH-, and PH2-,
J. Chem. Phys., 1976, 65, 1236. [all data]
Wu and Tiernan, 1982
Wu, R.L.C.; Tiernan, T.O.,
Collisional Studies of High Temperature Molecular Negative Ion-Neutral Reactions,
Bull. Am. Phys. Soc., 1982, 27, 109. [all data]
Dyke, Morris, et al., 1982
Dyke, J.M.; Morris, A.; Ridha, A.,
Study of the ground state of PO+ using photoelectron spectroscopy,
J. Chem. Soc. Faraday Trans. 2, 1982, 78, 2077. [all data]
Balducci, Gigli, et al., 1981
Balducci, G.; Gigli, G.; Guido, M.,
Dissociation energies of the molecules CrPO2(g) and CoO(g) by high-temperature mass spectrometry,
J. Chem. Soc. Faraday Trans. 2, 1981, 77, 1107. [all data]
Ghosh and Verma, 1978
Ghosh, S.N.; Verma, R.D.,
Rydberg states of the PO molecule,
J. Mol. Spectrosc., 1978, 72, 200. [all data]
Smoes, Drowart, et al., 1976
Smoes, S.; Drowart, J.; Myers, C.E.,
Determination of the atomization energies of the molecules TaO(g) TaO2(g) by the mass-spectrometric Knudsen-cell method,
J. Chem. Thermodyn., 1976, 8, 225. [all data]
Gingerich and Miller, 1975
Gingerich, K.A.; Miller, F.,
Thermodynamic study of gaseous sodium-phosphorus-oxygen ternary molecules by high temperature mass spectrometry,
J. Chem. Phys., 1975, 63, 1211. [all data]
Smoes and Drowart, 1973
Smoes, S.; Drowart, J.,
Atomization energies of phosphorus oxides,
Faraday Symp. Chem. Soc., 1973, 139. [all data]
Drowart, Myers, et al., 1972
Drowart, J.; Myers, C.E.; Szwarc, R.; Vander Auwera-Mahieu, A.; Uy, O.M.,
Determination by the mass spectrometric Knudsen cell method of the atomization energies of the molecules PO and PO2,
J. Chem. Soc. Faraday Trans. 2, 1972, 68, 1749. [all data]
Ackermann, Lefebvre-Brion, et al., 1972
Ackermann, F.; Lefebvre-Brion, H.; Roche, A.L.,
Calculated Rydberg states of the PO molecule,
Can. J. Phys., 1972, 50, 692. [all data]
Verma, Dixit, et al., 1971
Verma, R.D.; Dixit, M.N.; Jois, S.S.; Nagaraj, S.; Singhal, S.R.,
Emission spectrum of the PO molecule. Part II. 2Σ-2Σ transitions,
Can. J. Phys., 1971, 49, 3180. [all data]
Notes
Go To: Top, Gas phase thermochemistry data, Gas phase ion energetics data, References
- Symbols used in this document:
EA Electron affinity 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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