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Phosphorus dimer


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
Deltafgas34.42 ± 0.48kcal/molReviewCox, Wagman, et al., 1984CODATA Review value
Deltafgas34.333kcal/molReviewChase, 1998Data last reviewed in June, 1961
Quantity Value Units Method Reference Comment
gas,1 bar52.1326 ± 0.001cal/mol*KReviewCox, Wagman, et al., 1984CODATA Review value
gas,1 bar52.120cal/mol*KReviewChase, 1998Data last reviewed in June, 1961

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. - 6000.
A 8.585560
B 0.354638
C -0.081217
D 0.006912
E -0.096061
F 31.43480
G 61.86800
H 34.33389
ReferenceChase, 1998
Comment Data last reviewed in June, 1961

Reaction 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.

Data compiled by: John E. Bartmess

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Individual Reactions

(CAS Reg. No. 141171-05-3 bullet 4294967295Phosphorus dimer) + Phosphorus dimer = CAS Reg. No. 141171-05-3

By formula: (CAS Reg. No. 141171-05-3 bullet 4294967295P2) + P2 = CAS Reg. No. 141171-05-3

Quantity Value Units Method Reference Comment
Deltar49.6 ± 7.7kcal/molTherO'Hair, Krempp, et al., 1992gas phase; Acidity between MeNO2, tBuSH
Deltar51.0 ± 5.0kcal/molIMRBO'Hair, Krempp, et al., 1992gas phase; Hydride affinity: between CO2, SO2

(CAS Reg. No. 141171-04-2 bullet 4294967295Phosphorus dimer) + Phosphorus dimer = CAS Reg. No. 141171-04-2

By formula: (CAS Reg. No. 141171-04-2 bullet 4294967295P2) + P2 = CAS Reg. No. 141171-04-2

Quantity Value Units Method Reference Comment
Deltar34.4 ± 2.5kcal/molIMRBO'Hair, Krempp, et al., 1992gas phase; Fluoride affinity: Between H2S, MeSH
Deltar33.0 ± 8.1kcal/molTherO'Hair, Krempp, et al., 1992gas phase; Acidity between MeSH, H2S

References

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Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Cox, Wagman, et al., 1984
Cox, J.D.; Wagman, D.D.; Medvedev, V.A., CODATA Key Values for Thermodynamics, Hemisphere Publishing Corp., New York, 1984, 1. [all data]

Chase, 1998
Chase, M.W., Jr., NIST-JANAF Themochemical Tables, Fourth Edition, J. Phys. Chem. Ref. Data, Monograph 9, 1998, 1-1951. [all data]

O'Hair, Krempp, et al., 1992
O'Hair, R.A.J.; Krempp, M.; Damrauer, R.; Depuy, C.H., Gas-Phase Ion Chemistry of HP2(-), FP2(-), and HP2(+), Inorg. Chem., 1992, 31, 11, 2092, https://doi.org/10.1021/ic00037a021 . [all data]


Notes

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