Dibenzofuran
- Formula: C12H8O
- Molecular weight: 168.1913
- IUPAC Standard InChI: InChI=1S/C12H8O/c1-3-7-11-9(5-1)10-6-2-4-8-12(10)13-11/h1-8H
- IUPAC Standard InChIKey: TXCDCPKCNAJMEE-UHFFFAOYSA-N
- CAS Registry Number: 132-64-9
- 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: [1,1'-Biphenyl]-2,2'-diyl oxide; Dibenzo[b,d]furan; Diphenylene oxide; 2,2'-Biphenylene oxide; 2,2'-Biphenylylene oxide; Dibenzofurane
- Permanent link for this species. Use this link for bookmarking this species for future reference.
- Information on this page:
- Other data available:
- Data at other public NIST sites:
- 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, 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 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 | -29.2 ± 4.8 | kJ/mol | Ccb | Sabbah, 1991 | see Sabbah and Antipine, 1987 and Chirico, Gammon, et al., 1990; ALS |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔcH°solid | -5836.3 ± 4.7 | kJ/mol | Ccb | Sabbah, 1991 | see Sabbah and Antipine, 1987 and Chirico, Gammon, et al., 1990; Corresponding ΔfHºsolid = -29.1 kJ/mol (simple calculation by NIST; no Washburn corrections); ALS |
| ΔcH°solid | -5859.7 ± 4.2 | kJ/mol | Ccb | Cass, Fletcher, et al., 1958 | Corresponding ΔfHºsolid = -5.9 kJ/mol (simple calculation by NIST; no Washburn corrections); ALS |
| Quantity | Value | Units | Method | Reference | Comment |
| S°solid,1 bar | 196.18 | J/mol*K | N/A | Chirico, Gammon, et al., 1990 | crystaline, I phase; S (298.15 K, liq) = 244.97 J/mol*K.; DH |
Constant pressure heat capacity of solid
| Cp,solid (J/mol*K) | Temperature (K) | Reference | Comment |
|---|---|---|---|
| 199.01 | 298.15 | Chirico, Gammon, et al., 1990 | crystaline, I phase; T = 5 to 720 K. Data graphically extrapolated. Cp (298.15 K, liq) = 237.57 J/mol*K, graphically extrapolated.; DH |
Gas phase ion energetics data
Go To: Top, Condensed phase thermochemistry 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 as indicated in comments:
LLK - Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi
RDSH - Henry M. Rosenstock, Keith Draxl, Bruce W. Steiner, and John T. Herron
Ionization energy determinations
| IE (eV) | Method | Reference | Comment |
|---|---|---|---|
| 8.77 | EI | Terlouw, Heerma, et al., 1974 | LLK |
| 8.22 | PE | Dewar, Harget, et al., 1970 | RDSH |
| 7.9 ± 0.05 | PE | Eland, 1969 | RDSH |
| 8.09 | PE | Ruscic, Kovac, et al., 1978 | Vertical value; LLK |
References
Go To: Top, 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.
Sabbah, 1991
Sabbah, R.,
Thermodynamic study of fluorene and dibenzofuran,
Bull. Soc. Chim. Fr., 1991, 128, 350. [all data]
Sabbah and Antipine, 1987
Sabbah, R.; Antipine, I.,
Thermodynamic study on four polycycles. Relationship between their energy values and their structure,
Bull. Soc. Chim. Fr., 1987, 392-400. [all data]
Chirico, Gammon, et al., 1990
Chirico, R.D.; Gammon, B.E.; Knipmeyer, S.E.; Nguyen, A.; Strube, M.M.; Tsonopoulos, C.; Steele, W.V.,
The thermodyanmic properties of dibenzofuran,
J. Chem. Thermodyn., 1990, 22, 1075-1096. [all data]
Cass, Fletcher, et al., 1958
Cass, R.C.; Fletcher, S.E.; Mortimer, C.T.; Springall, H.D.; White, T.R.,
Heats of combustion and molecular structure. Part V. The mean bond energy term for the C-O bond in ethers, and the structures of some cyclic ethers,
J. Chem. Soc., 1958, 1406-1410. [all data]
Terlouw, Heerma, et al., 1974
Terlouw, J.K.; Heerma, W.; Frintrop, P.C.M.; Dijkstra, G.; Meinema, H.A.,
Electron-impact induced fragmentation of some heterocyclic-tin compounds,
J. Organomet. Chem., 1974, 64, 205. [all data]
Dewar, Harget, et al., 1970
Dewar, M.J.S.; Harget, A.J.; Trinajstic, N.; Worley, S.D.,
Ground states of conjugated molecules-XXI.Benzofurans and benzopyrroles,
Tetrahedron, 1970, 26, 4505. [all data]
Eland, 1969
Eland, J.H.D.,
Photoelectron spectra of conjugated hydrocarbons and heteromolecules,
Intern. J. Mass Spectrom. Ion Phys., 1969, 2, 471. [all data]
Ruscic, Kovac, et al., 1978
Ruscic, B.; Kovac, B.; Klasinc, L.; Gusten, H.,
Photoelectron spectroscopy of J. Heterocycl. Chem.. Fluorene analogues,
Z. Naturforsch. A:, 1978, 33, 1006. [all data]
Notes
Go To: Top, Condensed phase thermochemistry data, Gas phase ion energetics 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.