9,9'-Dimethyl-9,9'-bifluorenyl
- Formula: C28H22
- Molecular weight: 358.4743
- IUPAC Standard InChI: InChI=1S/C28H22/c1-27(23-15-7-3-11-19(23)20-12-4-8-16-24(20)27)28(2)25-17-9-5-13-21(25)22-14-6-10-18-26(22)28/h3-18H,1-2H3
- IUPAC Standard InChIKey: BEIJHYAUFZZZRP-UHFFFAOYSA-N
- CAS Registry Number: 15300-82-0
- 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 | 323.9 ± 2.4 | kJ/mol | Ccr | Rakus, Verevkin, et al., 1994 |
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 | 204.2 ± 2.0 | kJ/mol | Ccr | Rakus, Verevkin, et al., 1994 | crystal phase |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔcH°solid | -14366.73 ± 0.41 | kJ/mol | Ccr | Rakus, Verevkin, et al., 1994 | crystal phase; Corresponding ΔfHºsolid = 204.32 kJ/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:
AC - William E. Acree, Jr., James S. Chickos
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔsubH° | 119.74 | kJ/mol | V | Rakus, Verevkin, et al., 1994 | crystal phase; ALS |
| ΔsubH° | 119.7 ± 1.3 | kJ/mol | T | Rakus, Verevkin, et al., 1994 | Based on data from 368. to 403. K.; AC |
Enthalpy of vaporization
| ΔvapH (kJ/mol) | Temperature (K) | Method | Reference | Comment |
|---|---|---|---|---|
| 94.6 | 368. to 403. | B | Rakus, Verevkin, et al., 1994 | AC |
Enthalpy of sublimation
| ΔsubH (kJ/mol) | Temperature (K) | Method | Reference | Comment |
|---|---|---|---|---|
| 118.7 ± 1.3 | 386. | T | Rakus, Verevkin, et al., 1994 | Based on data from 368. to 403. K.; AC |
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.
Rakus, Verevkin, et al., 1994
Rakus, K.; Verevkin, S.P.; Schatzer, J.; Beckhaus, H.-D.; Ruchardt, C.,
Thermochemistry and thermal decomposition of 9,9'-bifluorenyl and 9,9'-dimethyl-9,9'-bifluorenyl - the stabilization energy of 9-fluorenyl radicals,
Chem. Ber., 1994, 127, 1095-1103. [all data]
Notes
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- 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 ΔsubH Enthalpy of sublimation ΔsubH° Enthalpy of sublimation at standard conditions ΔvapH Enthalpy of vaporization - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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