1,4-Butanedione, 1,4-diphenyl-
- Formula: C16H14O2
- Molecular weight: 238.2812
- IUPAC Standard InChI: InChI=1S/C16H14O2/c17-15(13-7-3-1-4-8-13)11-12-16(18)14-9-5-2-6-10-14/h1-10H,11-12H2
- IUPAC Standard InChIKey: OSWWFLDIIGGSJV-UHFFFAOYSA-N
- CAS Registry Number: 495-71-6
- Chemical structure:
This structure is also available as a 2d Mol file or as a computed 3d SD file
The 3d structure may be viewed using Java or Javascript. - Other names: 1,2-Dibenzoylethane; 1,4-Diphenyl-1,4-butanedione; 2,2''-Biacetophenone; Biphenacyl; Dibenzoylethane; Ethane, 1,2-dibenzoyl-
- Permanent link for this species. Use this link for bookmarking this species for future reference.
- Information on this page:
- Other data available:
- Options:
Data at NIST subscription sites:
NIST subscription sites provide data under the NIST Standard Reference Data Program, but require an annual fee to access. The purpose of the fee is to recover costs associated with the development of data collections included in such sites. Your institution may already be a subscriber. Follow the links above to find out more about the data in these sites and their terms of usage.
Condensed phase thermochemistry data
Go To: Top, References, Notes
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°solid | -255.6 ± 1.5 | kJ/mol | Ccb | Parks, Manchester, et al., 1954 | Reanalyzed by Cox and Pilcher, 1970, Original value = -256.2 ± 1.7 kJ/mol; ALS |
| ΔfH°solid | -261. | kJ/mol | Ccb | Parks and Huffman, 1930 | Unpublished results T.R. Lumb; ALS |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔcH°solid | -8041.4 ± 1.5 | kJ/mol | Ccb | Parks, Manchester, et al., 1954 | Reanalyzed by Cox and Pilcher, 1970, Original value = -8040.85 kJ/mol; Corresponding ΔfHºsolid = -255.6 kJ/mol (simple calculation by NIST; no Washburn corrections); ALS |
| ΔcH°solid | -8036.2 | kJ/mol | Ccb | Parks and Huffman, 1930 | Unpublished results T.R. Lumb; Corresponding ΔfHºsolid = -261. kJ/mol (simple calculation by NIST; no Washburn corrections); ALS |
| Quantity | Value | Units | Method | Reference | Comment |
| S°solid,1 bar | 324.79 | J/mol*K | N/A | Parks and Huffman, 1930 | crystaline, I phase; Extrapolation below 90 K, 103.7 J/mol*K.; DH |
Constant pressure heat capacity of solid
| Cp,solid (J/mol*K) | Temperature (K) | Reference | Comment |
|---|---|---|---|
| 302.1 | 303. | Spaght, Thomas, et al., 1932 | T = 30 to 190°C.; DH |
| 291.2 | 296.0 | Parks and Huffman, 1930 | crystaline, I phase; T = 93 to 296 K. Value is unsmoothed experimental datum.; DH |
References
Go To: Top, Condensed phase thermochemistry data, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Parks, Manchester, et al., 1954
Parks, G.S.; Manchester, K.E.; Vaughan, L.M.,
Heats of combustion and formation of some alcohols, phenols, and ketones,
J. Chem. Phys., 1954, 22, 2089-2090. [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]
Parks and Huffman, 1930
Parks, G.S.; Huffman, H.M.,
Thermal data on organic compounds. IX. A study of the effect of unsaturation on the heat capacities, entropies and free energies of some hydrocarbons and other compounds,
J. Am. Chem. Soc., 1930, 52, 4381-4391. [all data]
Spaght, Thomas, et al., 1932
Spaght, M.E.; Thomas, S.B.; Parks, G.S.,
Some heat capacity data on organic compounds obtained with a radiation calorimeter,
J. Phys. Chem., 1932, 36, 882-888. [all data]
Notes
Go To: Top, Condensed phase thermochemistry data, References
- Symbols used in this document:
Cp,solid Constant pressure heat capacity of solid S°solid,1 bar Entropy of solid at standard conditions (1 bar) ΔcH°solid Enthalpy of combustion of solid at standard conditions ΔfH°solid Enthalpy of formation of solid at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
- The National Institute of Standards and Technology (NIST) uses its best efforts to deliver a high quality copy of the Database and to verify that the data contained therein have been selected on the basis of sound scientific judgment. However, NIST makes no warranties to that effect, and NIST shall not be liable for any damage that may result from errors or omissions in the Database.
- Customer support for NIST Standard Reference Data products.