o-Xylylene
- Formula: C8H8
- Molecular weight: 104.1491
- IUPAC Standard InChI: InChI=1S/C8H8/c1-7-5-3-4-6-8(7)2/h3-6H,1-2H2
- IUPAC Standard InChIKey: XURVRZSODRHRNK-UHFFFAOYSA-N
- CAS Registry Number: 32796-95-5
- 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. - Species with the same structure:
- Information on this page:
- Other data available:
- Data at other public NIST sites:
- Options:
Gas phase thermochemistry data
Go To: Top, Reaction 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 by: Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔfH°gas | 220. ± 20. | kJ/mol | Ion | Pollack, Raine, et al., 1981 | |
| ΔfH°gas | 254. | kJ/mol | Kin | Roth and Scholz, 1981 |
Reaction thermochemistry data
Go To: Top, Gas 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 by: Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
Note: Please consider using the reaction search for this species. This page allows searching of all reactions involving this species. A general reaction search form is also available. Future versions of this site may rely on reaction search pages in place of the enumerated reaction displays seen below.
Individual Reactions
=
By formula: C8H8 = C8H8
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | -54.8 | kJ/mol | Kin | Roth and Scholz, 1981 | gas phase |
| ΔrH° | -44.2 ± 1.9 | kJ/mol | Cm | Roth, Biermann, et al., 1978 | liquid phase |
=
By formula: C8H8 = C8H8
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 46.4 ± 0.8 | kJ/mol | Eqk | Roth, Ebbrecht, et al., 1988 | gas phase |
References
Go To: Top, Gas phase thermochemistry data, Reaction thermochemistry data, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Pollack, Raine, et al., 1981
Pollack, S.K.; Raine, B.C.; Hehre, W.J.,
Determination of the heats of formation of the isomeric xylylenes by ion cyclotron double-resonance spectroscopy,
J. Am. Chem. Soc., 1981, 103, 6308-6313. [all data]
Roth and Scholz, 1981
Roth, W.R.; Scholz, B.P.,
Energy profile of the o-quinodimethane = benzocyclobutene equilibrium. Part 2.,
Chem. Ber., 1981, 114, 3741-3750. [all data]
Roth, Biermann, et al., 1978
Roth, W.R.; Biermann, M.; Dekker, H.; Jochems, R.; Mosselman, C.; Hermann, H.,
Energy profile of the o-quinodimethane-benzocyclobutene equilibrium,
Chem. Ber., 1978, 111, 3892-3903. [all data]
Roth, Ebbrecht, et al., 1988
Roth, W.R.; Ebbrecht, T.; Beitat, A.,
o-Quinodimethane-benzocyclobutene equilibrium: oxygen trapping technique,
Chem. Ber., 1988, 121, 1357-1358. [all data]
Notes
Go To: Top, Gas phase thermochemistry data, Reaction thermochemistry data, References
- Symbols used in this document:
ΔfH°gas Enthalpy of formation of gas at standard conditions ΔrH° Enthalpy of reaction 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.