2,3-Dimethyl-2,3-bis[(E)phenylazo]butane
- Formula: C18H22N4
- Molecular weight: 294.3941
- IUPAC Standard InChI: InChI=1S/C18H22N4/c1-17(2,21-19-15-11-7-5-8-12-15)18(3,4)22-20-16-13-9-6-10-14-16/h5-14H,1-4H3/b21-19-,22-20+
- IUPAC Standard InChIKey: RNFPCGNDACOHHM-OLAQIDGISA-N
- CAS Registry Number: 133930-64-0
- Chemical structure:
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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.
Data compiled by: Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔfH°gas | 113.9 ± 0.6 | kcal/mol | Ccb | Engel, Wang, et al., 1993 | Hfusion =5.04±0.05 kcal/mol |
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: Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔfH°solid | 86.66 ± 0.47 | kcal/mol | Ccb | Engel, Wang, et al., 1993 | Hfusion =5.04±0.05 kcal/mol |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔcH°solid | -2531.04 ± 0.47 | kcal/mol | Ccb | Engel, Wang, et al., 1993 | Hfusion =5.04±0.05 kcal/mol |
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 as indicated in comments:
DRB - Donald R. Burgess, Jr.
AC - William E. Acree, Jr., James S. Chickos
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔsubH° | 27.34 | kcal/mol | N/A | Engel, Wang, et al., 1993 | DRB |
Enthalpy of fusion
| ΔfusH (kcal/mol) | Temperature (K) | Reference | Comment |
|---|---|---|---|
| 5.041 | 342.3 | Engel, Wang, et al., 1993 | AC |
References
Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change data, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Engel, Wang, et al., 1993
Engel, P.S.; Wang, C.; Chen, Y.; Ruchardt, C.; Beckhaus, H.-D.,
Synthesis, thermochemistry, and reactions of vicinal bis(azoalkanes). The chemistry α- and β-azo radicals,
J. Am. Chem. Soc., 1993, 115, 65-74. [all data]
Notes
Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change data, References
- Symbols used in this document:
ΔcH°solid Enthalpy of combustion of solid at standard conditions ΔfH°gas Enthalpy of formation of gas at standard conditions ΔfH°solid Enthalpy of formation of solid at standard conditions ΔfusH Enthalpy of fusion ΔsubH° Enthalpy of sublimation at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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