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Borane, triethyl-

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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.

Data compiled by: Eugene S. Domalski and Elizabeth D. Hearing

Quantity Value Units Method Reference Comment
solid,1 bar78.884cal/mol*KN/AKostryukov, Samorukov, et al., 1977 
solid,1 bar80.81cal/mol*KN/AFurukawa, 1955Below 15°. Debye extrapolation.

Constant pressure heat capacity of solid

Cp,solid (cal/mol*K) Temperature (K) Reference Comment
57.4298.15Kostryukov, Samorukov, et al., 1977T = 12 to 322 K. Data calculated from equation. Cp = 6.2328 + 0.17161 T cal/mol*K.
57.70300.Furukawa, 1955T = 15 to 300 K.

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 as indicated in comments:
B - John E. Bartmess
M - Michael M. Meot-Ner (Mautner) and Sharon G. Lias

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

Fluorine anion + Borane, triethyl- = (Fluorine anion bullet Borane, triethyl-)

By formula: F- + C6H15B = (F- bullet C6H15B)

Quantity Value Units Method Reference Comment
Deltar62.00kcal/molIMRBMurphy and Beauchamp, 1977gas phase; iPr3B>Et3B>MeSiF3; B
Deltar51.0 ± 2.0kcal/molIMRELarson and McMahon, 1985gas phase; These relative affinities are ca. 10 kcal/mol weaker than threshold values (see Wenthold and Squires, 1995) for donors greater than ca. 27 kcal/mol in free energy. This discrepancy has not yet been resolved, though the stronger value appears preferable.; B,M
Quantity Value Units Method Reference Comment
Deltar25.cal/mol*KN/ALarson and McMahon, 1985gas phase; switching reaction,Thermochemical ladder(F-)H2O, Entropy change calculated or estimated; Arshadi, Yamdagni, et al., 1970; M
Quantity Value Units Method Reference Comment
Deltar43.5 ± 2.0kcal/molIMRELarson and McMahon, 1985gas phase; These relative affinities are ca. 10 kcal/mol weaker than threshold values (see Wenthold and Squires, 1995) for donors greater than ca. 27 kcal/mol in free energy. This discrepancy has not yet been resolved, though the stronger value appears preferable.; B,M

Chlorine anion + Borane, triethyl- = (Chlorine anion bullet Borane, triethyl-)

By formula: Cl- + C6H15B = (Cl- bullet C6H15B)

Quantity Value Units Method Reference Comment
Deltar23.8 ± 2.0kcal/molIMRELarson and McMahon, 1985gas phase; B,M
Deltar23.8kcal/molICRLarson and McMahon, 1984gas phase; switching reaction(Cl-)t-C4H9OH, Entropy change calculated or estimated; French, Ikuta, et al., 1982; M
Quantity Value Units Method Reference Comment
Deltar22.cal/mol*KN/ALarson and McMahon, 1985gas phase; switching reaction,Thermochemical ladder(t-C4H9OH), Entropy change calculated or estimated; M
Deltar22.0cal/mol*KN/ALarson and McMahon, 1984gas phase; switching reaction(Cl-)t-C4H9OH, Entropy change calculated or estimated; French, Ikuta, et al., 1982; M
Quantity Value Units Method Reference Comment
Deltar17.2 ± 2.0kcal/molIMRELarson and McMahon, 1985gas phase; B,M
Deltar17.2kcal/molICRLarson and McMahon, 1984gas phase; switching reaction(Cl-)t-C4H9OH, Entropy change calculated or estimated; French, Ikuta, et al., 1982; M

CN- + Borane, triethyl- = (CN- bullet Borane, triethyl-)

By formula: CN- + C6H15B = (CN- bullet C6H15B)

Quantity Value Units Method Reference Comment
Deltar35.90 ± 0.80kcal/molTDAsLarson, Szulejko, et al., 1988gas phase; B,M
Quantity Value Units Method Reference Comment
Deltar28.cal/mol*KPHPMSLarson, Szulejko, et al., 1988gas phase; M
Quantity Value Units Method Reference Comment
Deltar27.60 ± 0.20kcal/molTDAsLarson, Szulejko, et al., 1988gas phase; B

Hydrogen anion + Borane, triethyl- = (Hydrogen anion bullet Borane, triethyl-)

By formula: H- + C6H15B = (H- bullet C6H15B)

Quantity Value Units Method Reference Comment
Deltar69.4 ± 2.5kcal/molEndoWorkman and Squires, 1988gas phase; From Endo threshold for hydride transfer to CO2; B

References

Go To: Top, Condensed phase thermochemistry data, Reaction thermochemistry data, Notes

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

Kostryukov, Samorukov, et al., 1977
Kostryukov, V.N.; Samorukov, O.P.; Samorukova, N.Kh.; Krasavin, A.M.; Petrunin, A.B., Heat capacity of triethylboron at low temperature, Vses. Konf. Kalorim. [Russhir. Tezisy Dokl.] 7th, 1977, 2, 387-390. [all data]

Furukawa, 1955
Furukawa, G.T., Heat capacity, heats of fusion and vaporization, and vapor pressure of triethylborane, (C2H5)3B, NBS Report, 1955, No. 3712, 1-16. [all data]

Murphy and Beauchamp, 1977
Murphy, M.K.; Beauchamp, J.L., Fluorine and Alkyl Substituent Effects on Gas-Phase Lewis Acidities of Boranes by ICR Spectroscopy, Inorg. Chem., 1977, 16, 2437. [all data]

Larson and McMahon, 1985
Larson, J.W.; McMahon, T.B., Fluoride and chloride affinities of the main group oxides, fluorides, oxofluorides, and alkyls. Quantitative scales of lewis acidities from ICR halide exchange equilibria, J. Am. Chem. Soc., 1985, 107, 766. [all data]

Wenthold and Squires, 1995
Wenthold, P.G.; Squires, R.R., Bond dissociation energies of F2(-) and HF2(-). A gas-phase experimental and G2 theoretical study, J. Phys. Chem., 1995, 99, 7, 2002, https://doi.org/10.1021/j100007a034 . [all data]

Arshadi, Yamdagni, et al., 1970
Arshadi, M.; Yamdagni, R.; Kebarle, P., Hydration of Halide Negative Ions in the Gas Phase. II. Comparison of Hydration Energies for the Alkali Positive and Halide Negative Ions, J. Phys. Chem., 1970, 74, 7, 1475, https://doi.org/10.1021/j100702a014 . [all data]

Larson and McMahon, 1984
Larson, J.W.; McMahon, T.B., Gas phase negative ion chemistry of alkylchloroformates, Can. J. Chem., 1984, 62, 675. [all data]

French, Ikuta, et al., 1982
French, M.A.; Ikuta, S.; Kebarle, P., Hydrogen bonding of O-H and C-H hydrogen donors to Cl-. Results from mass spectrometric measurement of the ion-molecule equilibria RH + Cl- = RHCl-, Can. J. Chem., 1982, 60, 1907. [all data]

Larson, Szulejko, et al., 1988
Larson, J.W.; Szulejko, J.E.; McMahon, T.B., Gas Phase Lewis Acid-Base Interactions. An Experimental Determination of Cyanide Binding Energies From Ion Cyclotron Resonance and High-Pressure Mass Spectrometric Equilibrium Measurements., J. Am. Chem. Soc., 1988, 110, 23, 7604, https://doi.org/10.1021/ja00231a004 . [all data]

Workman and Squires, 1988
Workman, D.B.; Squires, R.R., Hydride Binding Energies of Boranes, Inorg. Chem., 1988, 27, 11, 1846, https://doi.org/10.1021/ic00284a003 . [all data]


Notes

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