Phosphorus monoxide


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
Δfgas-5.629kcal/molReviewChase, 1998Data last reviewed in June, 1971
Quantity Value Units Method Reference Comment
gas,1 bar53.246cal/mol*KReviewChase, 1998Data 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 (cal/mol*K)
    H° = standard enthalpy (kcal/mol)
    S° = standard entropy (cal/mol*K)
    t = temperature (K) / 1000.

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View table.

Temperature (K) 298. to 600.600. to 6000.
A 5.8044018.563170
B 4.5087600.337912
C -0.363292-0.077108
D -1.7605010.007186
E 0.046368-0.227369
F -7.396901-8.836960
G 59.2173062.56730
H -5.628110-5.628110
ReferenceChase, 1998Chase, 1998
Comment Data last reviewed in June, 1971 Data last reviewed in June, 1971

Gas phase ion energetics 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 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)163.kcal/molN/AHunter and Lias, 1998HL
Quantity Value Units Method Reference Comment
Gas basicity155.2kcal/molN/AHunter and Lias, 1998HL

Electron affinity determinations

EA (eV) Method Reference Comment
1.092 ± 0.010LPESZittel and Lineberger, 1976B
1.00 ± 0.10EndoWu and Tiernan, 1982B

Ionization energy determinations

IE (eV) Method Reference Comment
8.39 ± 0.01PEDyke, Morris, et al., 1982LBLHLM
8.9 ± 0.5EIBalducci, Gigli, et al., 1981LLK
8.373SGhosh and Verma, 1978LLK
9.1 ± 0.5EISmoes, Drowart, et al., 1976LLK
10.7EIGingerich and Miller, 1975LLK
9.5 ± 0.5EISmoes and Drowart, 1973LLK
9. ± 1.EIDrowart, Myers, et al., 1972LLK
8.231SAckermann, Lefebvre-Brion, et al., 1972LLK
8.38SVerma, Dixit, et al., 1971LLK

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

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