(Z)-1,2-Difluoroethylene
- Formula: C2H2F2
- Molecular weight: 64.0341
- IUPAC Standard InChI: InChI=1S/C2H2F2/c3-1-2-4/h1-2H/b2-1-
- IUPAC Standard InChIKey: WFLOTYSKFUPZQB-UPHRSURJSA-N
- CAS Registry Number: 1630-77-9
- 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: Ethene, 1,2-difluoro-, (Z)-
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Reaction 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
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
C2H2F2 =
By formula: C2H2F2 = C2H2F2
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | -4.52 ± 0.50 | kJ/mol | Eqk | Craig, Piper, et al., 1971 | gas phase |
= C2H2F2
By formula: C2H2F2 = C2H2F2
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 3.9 | kJ/mol | Eqk | Craig and Entemann, 1961 | gas phase |
Gas Chromatography
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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: NIST Mass Spectrometry Data Center, William E. Wallace, director
Normal alkane RI, non-polar column, temperature ramp
| Column type | Active phase | I | Reference | Comment |
|---|---|---|---|---|
| Capillary | OV-101 | 263. | Zenkevich, 2005 | 25. m/0.20 mm/0.10 μm, N2/He, 6. K/min; Tstart: 50. C; Tend: 250. C |
References
Go To: Top, Reaction thermochemistry data, Gas Chromatography, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Craig, Piper, et al., 1971
Craig, N.C.; Piper, L.G.; Wheeler, V.L.,
Thermodynamics of cis-trans isomerizations. II. The 1-chloro-2-fluoroethylenes, 1,2-difluorocyclopropanes, and related molecules,
J. Phys. Chem., 1971, 75, 1453-1460. [all data]
Craig and Entemann, 1961
Craig, N.C.; Entemann, E.A.,
Thermodynamics of cis-trans isomerizations. The 1,2-difluoroethylenes,
J. Am. Chem. Soc., 1961, 83, 3047-3050. [all data]
Zenkevich, 2005
Zenkevich, I.G.,
Experimentally measured retention indices., 2005. [all data]
Notes
Go To: Top, Reaction thermochemistry data, Gas Chromatography, References
- Symbols used in this document:
ΔrH° Enthalpy of reaction at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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