6,13-Pentacenedione
- Formula: C22H12O2
- Molecular weight: 308.3295
- IUPAC Standard InChI: InChI=1S/C22H12O2/c23-21-17-9-13-5-1-2-6-14(13)10-18(17)22(24)20-12-16-8-4-3-7-15(16)11-19(20)21/h1-12H
- IUPAC Standard InChIKey: UFCVADNIXDUEFZ-UHFFFAOYSA-N
- CAS Registry Number: 3029-32-1
- Chemical structure:
This structure is also available as a 2d Mol file or as a computed 3d SD file
View 3d structure (requires JavaScript / HTML 5) - Other names: 6,13-Pentacenequinone
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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: Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔcH°solid | -2461.6 ± 1.5 | kcal/mol | Ccb | Magnus, 1956 | Reanalyzed by Cox and Pilcher, 1970, Original value = -2461.439 kcal/mol; Corresponding ΔfHºsolid = -17.42 kcal/mol (simple calculation by NIST; no Washburn corrections) |
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:
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
AC - William E. Acree, Jr., James S. Chickos
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔsubH° | 27.8 | kcal/mol | C | Magnus, 1956 | ALS |
| ΔsubH° | 27.8 ± 1.4 | kcal/mol | N/A | Magnus, 1956 | See also Cox and Pilcher, 1970, 2.; AC |
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 as indicated in comments:
LLK - Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi
Ionization energy determinations
| IE (eV) | Method | Reference | Comment |
|---|---|---|---|
| 8.07 ± 0.05 | PI | Potapov and Sorokin, 1971 | LLK |
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.
Magnus, 1956
Magnus, A.,
Die resonanzenergien der parachinone Aui grund der prazisionsmessungsen ihrer verbrennungswarmen durch herrn gerhard wittwer,
Z. Phys. Chem. (Neue Folge), 1956, 9, 141-161. [all data]
Cox and Pilcher, 1970
Cox, J.D.; Pilcher, G.,
Thermochemistry of Organic and Organometallic Compounds, Academic Press, New York, 1970, 1-636. [all data]
Cox and Pilcher, 1970, 2
Cox, J.D.; Pilcher, G.,
Thermochemistry of Organic and Organometallic Compounds, Academic Press Inc., London, 1970, 643. [all data]
Potapov and Sorokin, 1971
Potapov, V.K.; Sorokin, V.V.,
Photoionization and ion-molecule reactions in quinones and alcohols,
High Energy Chem., 1971, 5, 435, In original 487. [all data]
Notes
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- Symbols used in this document:
ΔcH°solid Enthalpy of combustion of solid at standard conditions ΔsubH° Enthalpy of sublimation at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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