Benzene, 1,2-diiodo-
- Formula: C6H4I2
- Molecular weight: 329.9049
- IUPAC Standard InChI: InChI=1S/C6H4I2/c7-5-3-1-2-4-6(5)8/h1-4H
- IUPAC Standard InChIKey: BBOLNFYSRZVALD-UHFFFAOYSA-N
- CAS Registry Number: 615-42-9
- 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: Benzene, o-diiodo-; o-Diiodobenzene; 1,2-Diiodobenzene
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Gas phase thermochemistry data
Go To: Top, Condensed phase thermochemistry data, Gas phase ion energetics 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: Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔfH°gas | 252. ± 5.9 | kJ/mol | Ccb | Smith, 1956 | Heat of formation derived by Cox and Pilcher, 1970 |
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 as indicated in comments:
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
DH - Eugene S. Domalski and Elizabeth D. Hearing
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔfH°liquid | 187. ± 4.2 | kJ/mol | Ccb | Smith, 1956 | Heat of formation derived by Cox and Pilcher, 1970; ALS |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔcH°liquid | -3120. ± 2. | kJ/mol | Ccb | Smith, 1956 | Heat of formation derived by Cox and Pilcher, 1970; ALS |
Constant pressure heat capacity of liquid
| Cp,liquid (J/mol*K) | Temperature (K) | Reference | Comment |
|---|---|---|---|
| 190.0 | 298.15 | Narbutt, 1918 | T = 196 to 373 K. Cp = 0.13574 + 0.0000776t. Cp value calculated from equation.; DH |
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 by: Henry M. Rosenstock, Keith Draxl, Bruce W. Steiner, and John T. Herron
Appearance energy determinations
| Ion | AE (eV) | Other Products | Method | Reference | Comment |
|---|---|---|---|---|---|
| C6H4+ | 13.6 ± 0.2 | ? | EI | Grutzmacher and Lohmann, 1967 |
References
Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Gas phase ion energetics data, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Smith, 1956
Smith, L.,
Corrected heats of combustion of organic iodine compounds,
Acta Chem. Scand., 1956, 10, 884-886. [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]
Narbutt, 1918
Narbutt, J.,
Die Spezifischen Warmen und Schmelzwarmen der dichloro-, chlorbrom-, dibrom-, bromjod-, und dijodbenzole. I,
Z. Elektrochem., 1918, 24, 339-342. [all data]
Grutzmacher and Lohmann, 1967
Grutzmacher, H.-F.; Lohmann, J.,
Massenspektrometrie instabiler organischer Molekule. I. Ionisations-potential und Bildungsenthalpie von Dehydrobenzol,
Ann. Chem., 1967, 705, 81. [all data]
Notes
Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Gas phase ion energetics data, References
- Symbols used in this document:
AE Appearance energy Cp,liquid Constant pressure heat capacity of liquid ΔcH°liquid Enthalpy of combustion of liquid at standard conditions ΔfH°gas Enthalpy of formation of gas at standard conditions ΔfH°liquid Enthalpy of formation of liquid at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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