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
Δfgas144.0 ± 2.0kJ/molReviewCox, Wagman, et al., 1984CODATA Review value
Δfgas143.65kJ/molReviewChase, 1998Data last reviewed in June, 1961
Quantity Value Units Method Reference Comment
gas,1 bar218.123 ± 0.004J/mol*KReviewCox, Wagman, et al., 1984CODATA Review value
gas,1 bar218.07J/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 (J/mol*K)
    H° = standard enthalpy (kJ/mol)
    S° = standard entropy (J/mol*K)
    t = temperature (K) / 1000.

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View table.

Temperature (K) 298. to 6000.
A 35.92198
B 1.483806
C -0.339811
D 0.028919
E -0.401919
F 131.5232
G 258.8557
H 143.6530
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

Note: Please consider using the reaction search for this species. This page allows searching of all reactions involving this species. A general reaction search form is also available. Future versions of this site may rely on reaction search pages in place of the enumerated reaction displays seen below.

Individual Reactions

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

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

Quantity Value Units Method Reference Comment
Δr208. ± 32.kJ/molTherO'Hair, Krempp, et al., 1992gas phase; Acidity between MeNO2, tBuSH
Δr213. ± 21.kJ/molIMRBO'Hair, Krempp, et al., 1992gas phase; Hydride affinity: between CO2, SO2

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

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

Quantity Value Units Method Reference Comment
Δr144. ± 10.kJ/molIMRBO'Hair, Krempp, et al., 1992gas phase; Fluoride affinity: Between H2S, MeSH
Δr138. ± 34.kJ/molTherO'Hair, Krempp, et al., 1992gas phase; Acidity between MeSH, H2S

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:
L - Sharon G. Lias

Data compiled as indicated in comments:
LLK - Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi
RDSH - Henry M. Rosenstock, Keith Draxl, Bruce W. Steiner, and John T. Herron
B - John E. Bartmess

View reactions leading to P2+ (ion structure unspecified)

Quantity Value Units Method Reference Comment
IE (evaluated)10.53eVN/AN/AL

Electron affinity determinations

EA (eV) Method Reference Comment
0.630 ± 0.050LPESJones, Ganteför, et al., 1995Vertical Detachment Energy: 0.68±0.05 eV; B
0.589 ± 0.025LPESSnodgrass, Coe, et al., 1985B
<0.649985PDFeldman, Rackwitz, et al., 1977B
0.24 ± 0.23EIAEBennett, Margrave, et al., 1974From P4; B

Ionization energy determinations

IE (eV) Method Reference Comment
11.7 ± 0.5EIBalducci, Gigli, et al., 1981LLK
10.53EVALHuber and Herzberg, 1979LLK
10.567 ± 0.002SCarroll and Mitchell, 1975LLK
10.3 ± 0.5EIGingerich, Cocke, et al., 1974LLK
9.7EIDrowart, Myers, et al., 1973LLK
10.60PEPotts, Glenn, et al., 1972LLK
9.7 ± 0.5EISmoes, Myers, et al., 1971LLK
11.2EIGingerich and Piacente, 1971LLK
10.7 ± 0.1SDonovan and Strachan, 1971LLK
11.0 ± 0.3EIDeMaria, Gingerich, et al., 1968RDSH
9.6 ± 0.3EICarlson, Kohl, et al., 1968RDSH
11.8 ± 0.5EIGutbier, 1961RDSH
10.62 ± 0.01PEBulgin, Dyke, et al., 1976Vertical value; LLK
10.84PEPotts, Glenn, et al., 1972Vertical value; LLK

Appearance energy determinations

Ion AE (eV) Other Products MethodReferenceComment
P+15.9PEIGingerich and Piacente, 1971LLK
P+15.1 ± 0.3PEIDeMaria, Gingerich, et al., 1968RDSH

References

Go To: Top, Gas phase thermochemistry data, Reaction 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.

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]

Jones, Ganteför, et al., 1995
Jones, R.O.; Ganteför, G.; Hunsicker, S.; Pieperhoff, P., Structure and Spectroscopy of Phosphorous Cluster anions: Theory (simulated annealing) and Experiment (Photoelectron Detachment), J. Chem. Phys., 1995, 103, 22, 9549, https://doi.org/10.1063/1.469969 . [all data]

Snodgrass, Coe, et al., 1985
Snodgrass, J.T.; Coe, J.V.; Freidhoff, C.B.; McHugh, K.M.; Bowen, K.H., Negative ion photoelectron spectroscopy of P2-, Chem. Phys. Lett., 1985, 122, 352. [all data]

Feldman, Rackwitz, et al., 1977
Feldman, D.; Rackwitz, R.; Kaiser, H.J.; Heincke, E., Photodetachment bei einigen neagtiven molekulionen: P2-, As2-, CH2-, CH3-, S3-, Z. Naturforsch. A:, 1977, 32, 600. [all data]

Bennett, Margrave, et al., 1974
Bennett, S.L.; Margrave, J.L.; Franklin, J.L., High temperature negative ions. Electron impact study of tetratomic phosphorous vapor, J. Chem. Phys., 1974, 61, 1647. [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]

Huber and Herzberg, 1979
Huber, K.P.; Herzberg, G., Molecular Spectra and Molecular Structure. IV. Constants of Diatomic Molecules,, Van Nostrand Reinhold Co., 1979, ,1. [all data]

Carroll and Mitchell, 1975
Carroll, P.K.; Mitchell, P.I., The absorption spectrum of diatomic phosphorus between 1370 and 600 A, Proc. Roy. Soc. London A, 1975, 342, 93. [all data]

Gingerich, Cocke, et al., 1974
Gingerich, K.A.; Cocke, D.L.; Kordis, J., Gaseous phosphorus compounds. X. Mass spectrometric determination of the dissociation energies of arsenic and bismuth monophosphides, J. Phys. Chem., 1974, 78, 603. [all data]

Drowart, Myers, et al., 1973
Drowart, J.; Myers, C.E.; Szwarc, R.; Vander Auwera-Mahieu, A.; Uy, O.M., The dissociation energies of the molecules PS, PSe, and PTe, High Temp. Sci., 1973, 5, 482. [all data]

Potts, Glenn, et al., 1972
Potts, A.W.; Glenn, K.G.; Price, W.C., General discussion, Faraday Discuss. Chem. Soc., 1972, 54, 65. [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]

Gingerich and Piacente, 1971
Gingerich, K.A.; Piacente, V., Gaseous phosphorus compounds. IV. Thermodynamic study of gallium monophosphide with a mass spectrometer and dissociation energy of aluminum diphosphide, J. Chem. Phys., 1971, 54, 2498. [all data]

Donovan and Strachan, 1971
Donovan, R.J.; Strachan, P., Vacuum U.-V. spectra of transient molecules and radicals, J. Chem. Soc. Faraday Trans., 1971, 67, 3407. [all data]

DeMaria, Gingerich, et al., 1968
DeMaria, G.; Gingerich, K.A.; Piacente, V., Vaporization of aluminum phosphide, J. Chem. Phys., 1968, 49, 4705. [all data]

Carlson, Kohl, et al., 1968
Carlson, K.D.; Kohl, F.J.; Uy, O.M., Mass spectrometry of molecules of the nitrogen family, Advan. Chem. Ser., 1968, 72, 245. [all data]

Gutbier, 1961
Gutbier, H., Massenspektrometrische Untersuchungen der Verdampfungsvorgange bei einigen Verbindungen mit Zinkblende-Gitter im Temperaturbereich um 1000 degree K, Z. Naturforsch. A:, 1961, 16, 268. [all data]

Bulgin, Dyke, et al., 1976
Bulgin, D.K.; Dyke, J.M.; Morris, A., HeI photoelectron spectrum of the P2(X1Σ+) molecule, J. Chem. Soc. Faraday Trans. 2, 1976, 72, 2225. [all data]


Notes

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