Boron


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
Δfgas198.30kcal/molReviewChase, 1998Data last reviewed in March, 1979
Quantity Value Units Method Reference Comment
gas,1 bar48.296cal/mol*KReviewChase, 1998Data last reviewed in March, 1979

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 800.800. to 6000.
A -1.33023010.35670
B 35.97770-0.864833
C -40.790390.226905
D 15.81880-0.016130
E 0.121037-0.084268
F 197.8330194.6400
G 38.3140159.81580
H 198.3000198.3000
ReferenceChase, 1998Chase, 1998
Comment Data last reviewed in March, 1979 Data last reviewed in March, 1979

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 compiled by: John E. Bartmess

View reactions leading to B2+ (ion structure unspecified)

Electron affinity determinations

EA (eV) Reference Comment
>1.30 ± 0.40Reid, 1993EA "probably 41.5 kcal/mol.

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.

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

Reid, 1993
Reid, C.J., Electron Affinities of BH, B2, BC, and BN molecules determined using Charge Inversion Spectrometry, Int. J. Mass Spectrom. Ion Proc., 1993, 127, 147, https://doi.org/10.1016/0168-1176(93)87087-9 . [all data]


Notes

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