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Boron dioxide


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
Deltafgas-68.000kcal/molReviewChase, 1998Data last reviewed in June, 1968
Quantity Value Units Method Reference Comment
gas,1 bar54.926cal/mol*KReviewChase, 1998Data last reviewed in June, 1968

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. - 1100.1100. - 6000.
A 5.91177215.18720
B 19.41190-0.263641
C -16.414100.066504
D 5.028631-0.002432
E -0.002877-1.083110
F -70.50019-75.25229
G 56.9618169.53540
H -68.00010-68.00010
ReferenceChase, 1998Chase, 1998
Comment Data last reviewed in June, 1968 Data last reviewed in June, 1968

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
B - John E. Bartmess

View reactions leading to BO2+ (ion structure unspecified)

Electron affinity determinations

EA (eV) Method Reference Comment
4.460 ± 0.030LPESZhai, Wang, et al., 2007B
4.32 ± 0.19R-ASemenikin, Minaeva, et al., 1987Also BO2 neutral = -69.8±2.0 kcal/mol from TDEq.; value altered from reference due to conversion from electron convention to ion convention; B
4.51 ± 0.21R-ASidorov, Rudnyi, et al., 1983value altered from reference due to conversion from electron convention to ion convention; B
4.19 ± 0.31TDEqJensen, 1970B
3.40 ± 0.50EIAEShevchenko, Iljin, et al., 1976From K2BO2F; B
3.28 ± 0.13TDEqSrivastava, Uy, et al., 1971EA(BO2) < EA(Cl) by 7.7 kcal, new «DELTA»Hf(BO2) and EA(Cl) used; B

Ionization energy determinations

IE (eV) Method Reference Comment
12.7 ± 0.4DERBagarat'yan and Nikitin, 1979LLK
14. ± 1.EIBagarat'yan and Nikitin, 1979LLK
14.0 ± 1.0EIUy, Srivastava, 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]

Zhai, Wang, et al., 2007
Zhai, H.J.; Wang, L.M.; Li, S.D.; Wang, L.S., Vibrationally resolved photoelectron spectroscopy of BO- and BO2-: A joint experimental and theoretical study, J. Phys. Chem. A, 2007, 111, 6, 1030-1035, https://doi.org/10.1021/jp0666939 . [all data]

Semenikin, Minaeva, et al., 1987
Semenikin, V.I.; Minaeva, I.I.; Sorokin, I.D.; Nikitin, M.I.; Rudnyi, E.B.; Sidorov, L.N., Mass Spectrometric Determination of the Enthalpy of Formation and Electron Affinity of BO2, High Temp. Phys. (Engl.), 1987, 25, 497. [all data]

Sidorov, Rudnyi, et al., 1983
Sidorov, L.N.; Rudnyi, E.B.; Nikitin, M.I.; Sorokin, I.D., Gas Phase Anion Exchange Reactions and the Determination of the Heats of Formation of Metaphosphate (PO3-), metaborate (BO2-), and perrhennate (ReO4-), Dokl. Akad. Nauk SSSR Ser. Khim., 1983, 272, 1172. [all data]

Jensen, 1970
Jensen, D.E., Electron Attachment and Compound Formation in Flames. II. Mass Spectrometry of Boron-Containing Flames, J. Chem. Phys., 1970, 52, 6, 3305, https://doi.org/10.1063/1.1673481 . [all data]

Shevchenko, Iljin, et al., 1976
Shevchenko, V.E.; Iljin, M.K.; Nikitin, O.T.; Sidorov, L.N., Mass-spectrometric study of mixed dimers M2BO2F, Int. J. Mass Spectrom. Ion Phys., 1976, 21, 279. [all data]

Srivastava, Uy, et al., 1971
Srivastava, R.D.; Uy, O.M.; Farber, M., Effusion mass spectrometric study of thermodynamic properties of BO- and BO2-, J. Chem. Soc. Faraday Trans., 1971, 67, 2941. [all data]

Bagarat'yan and Nikitin, 1979
Bagarat'yan, N.V.; Nikitin, O.T., Electron ionization of vapor over boron oxide, Vestn. Mosk. Univ. Khim., 1979, 34, 539. [all data]

Uy, Srivastava, et al., 1971
Uy, O.M.; Srivastava, R.D.; Farber, M., Mass spectrometric determination of the heats of formation of gaseous BO2 BOF2, High Temp. Sci., 1971, 3, 462. [all data]


Notes

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