2,4-Dicarbaheptaborane(7)
- Formula: C2H7B5
- Molecular weight: 85.132
- CAS Registry Number: 20693-69-0
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Phase change 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: William E. Acree, Jr., James S. Chickos
Enthalpy of vaporization
| ΔvapH (kcal/mol) | Temperature (K) | Method | Reference | Comment |
|---|---|---|---|---|
| 7.55 | 288. | I | Shmyreva, Shlyakova, et al., 1976 | Based on data from 273. to 323. 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 by: John E. Bartmess
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Individual Reactions
C2H6B5- + = C2H7B5
By formula: C2H6B5- + H+ = C2H7B5
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | <452.00 | kcal/mol | EIAE | Onak, Howard, et al., 1973 | gas phase; From closo-2,4-C2B5H7. Computations indicate dHacid ca. 371 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.
Shmyreva, Shlyakova, et al., 1976
Shmyreva, G.O.; Shlyakova, V.G.; Golosova, R.M.; Petrunin, A.B.; Bekker, D.B.; Zhigach, A.F.,
Russ. J. Phys. Chem., 1976, 50, 478. [all data]
Onak, Howard, et al., 1973
Onak, T.; Howard, J.; Brown, C.,
Negative Ion Mass Spectrometry of closo-Carboranes, J. Chem. Soc. Dalton 76, 1973. [all data]
Notes
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- Symbols used in this document:
ΔrH° Enthalpy of reaction at standard conditions ΔvapH Enthalpy of vaporization - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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