metaboric acid


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-134.00kcal/molReviewChase, 1998Data last reviewed in December, 1964
Quantity Value Units Method Reference Comment
gas,1 bar57.297cal/mol*KReviewChase, 1998Data last reviewed in December, 1964

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. to 1200.1200. to 6000.
A 4.63655217.01810
B 21.632201.452560
C -13.97080-0.274753
D 3.5810210.018097
E 0.013596-2.522300
F -136.1820-144.6670
G 57.1245970.39221
H -134.0000-134.0000
ReferenceChase, 1998Chase, 1998
Comment Data last reviewed in December, 1964 Data last reviewed in December, 1964

Condensed 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
Δfsolid-191.87kcal/molReviewChase, 1998Data last reviewed in December, 1964
Quantity Value Units Method Reference Comment
solid11.68cal/mol*KReviewChase, 1998Data last reviewed in December, 1964

Solid 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. to 900.900. to 1500.
A 42.92120195.8020
B -114.1630-281.1021
C 172.0550171.4790
D -78.35660-37.03700
E -0.807106-26.95719
F -203.6700-309.3499
G 86.16860226.5650
H -191.8700-191.8700
ReferenceChase, 1998Chase, 1998
Comment Data last reviewed in December, 1964 Data last reviewed in December, 1964

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

Quantity Value Units Method Reference Comment
Proton affinity (review)182.4kcal/molN/AHunter and Lias, 1998HL
Quantity Value Units Method Reference Comment
Gas basicity174.6kcal/molN/AHunter and Lias, 1998HL

Ionization energy determinations

IE (eV) Method Reference Comment
13.5 ± 1.0EIUy, Srivastava, et al., 1971LLK
12.6 ± 0.2EIMeschi, Chupka, et al., 1960RDSH

De-protonation reactions

BO2- + Hydrogen cation = HBO2

By formula: BO2- + H+ = HBO2

Quantity Value Units Method Reference Comment
Δr322.9 ± 5.4kcal/molD-EAZhai, Wang, et al., 2007gas phase; B
Δr324.1 ± 6.3kcal/molD-EASidorov, Rudnyi, et al., 1983gas phase; value altered from reference due to conversion from electron convention to ion convention; B

References

Go To: Top, Gas phase thermochemistry data, Condensed 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]

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]

Meschi, Chupka, et al., 1960
Meschi, D.J.; Chupka, W.A.; Berkowitz, J., Heterogeneous reactions studied by mass spectrometry. I. Reaction of B203(s) with H2O(g), J. Chem. Phys., 1960, 33, 530. [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]

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]


Notes

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