Borane
- Formula: BH3
- Molecular weight: 13.835
- IUPAC Standard InChI: InChI=1S/BH3/h1H3
- IUPAC Standard InChIKey: UORVGPXVDQYIDP-UHFFFAOYSA-N
- CAS Registry Number: 13283-31-3
- Chemical structure:
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Gas phase thermochemistry data
Go To: Top, Reaction thermochemistry data, References, Notes
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 |
|---|---|---|---|---|---|
| ΔfH°gas | 106.69 | kJ/mol | Review | Chase, 1998 | Data last reviewed in December, 1964 |
| Quantity | Value | Units | Method | Reference | Comment |
| S°gas,1 bar | 187.88 | J/mol*K | Review | Chase, 1998 | Data 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 (J/mol*K)
H° = standard enthalpy (kJ/mol)
S° = standard entropy (J/mol*K)
t = temperature (K) / 1000.
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| Temperature (K) | 298. to 1300. | 1300. to 6000. |
|---|---|---|
| A | 22.88661 | 68.71969 |
| B | 33.51995 | 7.326644 |
| C | 10.25691 | -1.379298 |
| D | -8.515151 | 0.090359 |
| E | 0.238611 | -18.52081 |
| F | 99.10683 | 49.59044 |
| G | 206.5461 | 226.5423 |
| H | 106.6920 | 106.6920 |
| Reference | Chase, 1998 | Chase, 1998 |
| Comment | Data last reviewed in December, 1964 | Data last reviewed in December, 1964 |
Reaction thermochemistry 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 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
+
= (
•
)
By formula: H- + H3B = (H- • H3B)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 310. ± 12. | kJ/mol | Endo | Workman and Squires, 1988 | gas phase; From Endo threshold for hydride transfer to CO2 |
| ΔrH° | 322. ± 8.4 | kJ/mol | Ther | Krivtsov, Titova, et al., 1977 | gas phase; value altered from reference due to conversion from electron convention to ion convention |
| ΔrH° | 341.4 | kJ/mol | Ther | Altschuller, 1955 | gas phase |
By formula: H4B- + H3B = (H4B- • H3B)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 165. ± 5.0 | kJ/mol | CIDT | Workman and Squires, 1988 | gas phase; CID threshold in Ar target |
By formula: CN- + H3B = (CN- • H3B)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 256. ± 8.8 | kJ/mol | Endo | Workman and Squires, 1988 | gas phase |
H2B- + =
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 1723.0 | kJ/mol | N/A | Bartmess and Hinde, 2005 | gas phase |
References
Go To: Top, Gas 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.
Chase, 1998
Chase, M.W., Jr.,
NIST-JANAF Themochemical Tables, Fourth Edition,
J. Phys. Chem. Ref. Data, Monograph 9, 1998, 1-1951. [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]
Krivtsov, Titova, et al., 1977
Krivtsov, N.V.; Titova, K.V.; Rosolovskii, V.Ya.,
Thermochemical study of complex borates,
Russ. J. Inorg. Chem., 1977, 22, 374. [all data]
Altschuller, 1955
Altschuller, A.P.,
Lattice Energies and Related Thermodynamic Properties of the Alkali Metal Borohydrides and of the Borohydride Ion,
J. Am. Chem. Soc., 1955, 77, 21, 5455, https://doi.org/10.1021/ja01626a001
. [all data]
Bartmess and Hinde, 2005
Bartmess, J.E.; Hinde, R.J.,
The Gas Phase Acidities of the Elemental Hydrides are Functions of Bond Lengths and Electronegativity,
Can. J. Chem., 2005, 83, 11, 2005-2012, https://doi.org/10.1139/v05-218
. [all data]
Notes
Go To: Top, Gas phase thermochemistry data, Reaction thermochemistry data, References
- Symbols used in this document:
S°gas,1 bar Entropy of gas at standard conditions (1 bar) ΔfH°gas Enthalpy of formation of gas at standard conditions ΔrH° Enthalpy of reaction at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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