F2C=C radical anion
- Formula: C2F2-
- Molecular weight: 62.0188
- CAS Registry Number: 107693-92-5
- Information on this page:
- Options:
Gas phase thermochemistry data
Go To: Top, Vibrational and/or electronic energy levels, 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: John E. Bartmess
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔfH°gas | -18. ± 12. | kcal/mol | EIAE | Heni and Illenberger, 1986 | From F2C=CHF |
ΔfH°gas | <3.50 | kcal/mol | IMRB | Dawson and Jennings, 1976 | O- + CH2=CF2 ->. G3MP2B3 calculations indicate a HOF(A-) of -22 kcal/mol. |
ΔfH°gas | -155. ± 14. | kcal/mol | EIAE | Harland and Thynne, 1975 | From CF3CHO. G3MP2B3 calculations indicate an EA of ca. 2.3 eV, and HOF(A-) of -22 kcal/mol. |
Vibrational and/or electronic energy levels
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: Marilyn E. Jacox
State: ?
Energy (cm-1) |
Med. | Transition | λmin (nm) |
λmax (nm) |
References | ||
---|---|---|---|---|---|---|---|
Td = 18190 ± 50 | gas | Gilles, Lineberger, et al., 1993 | |||||
State: X
Vib. sym. |
No. | Approximate type of mode |
cm-1 | Med. | Method | References | |
---|---|---|---|---|---|---|---|
a1 | 2 | CF2 s-stretch | 800 ± 35 | gas | PE | Gilles, Lineberger, et al., 1993 | |
3 | CF2 scissors | 505 ± 25 | gas | PE | Gilles, Lineberger, et al., 1993 | ||
Additional references: Jacox, 1994, page 203
Notes
d | Photodissociation threshold |
References
Go To: Top, Gas phase thermochemistry data, Vibrational and/or electronic energy levels, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Heni and Illenberger, 1986
Heni, M.; Illenberger, E.,
The Unimolecular Decompositions of the Fluoroethylene Radical Anions formed by Electron Attachment,
J. Electron Spectros. Rel. Phenom., 1986, 41, 2, 453, https://doi.org/10.1016/0368-2048(86)85022-8
. [all data]
Dawson and Jennings, 1976
Dawson, J.H.J.; Jennings, K.R.,
Production of gas phase radical anions by reaction of O-. Ions with organic substrates,
J. Chem. Soc. Faraday Trans. 2, 1976, 72, 700. [all data]
Harland and Thynne, 1975
Harland, P.W.; Thynne, J.C.J.,
Dissociative eElectron cCapture in tTrifluoroacetaldehyde, pentafluoropropionaldehyde, and heptafluorobutyraldehyde,
Int. J. Mass Spectrom. Ion Phys., 1975, 18, 73. [all data]
Gilles, Lineberger, et al., 1993
Gilles, M.K.; Lineberger, W.C.; Ervin, K.M.,
Photoelectron Spectroscopy of the Monofluorovinylidene and Difluorovinylidene Anions: The Monofluorovinylidene-Fluoroacetylene Rearrangement,
J. Am. Chem. Soc., 1993, 115, 3, 1031, https://doi.org/10.1021/ja00056a030
. [all data]
Jacox, 1994
Jacox, M.E.,
Vibrational and electronic energy levels of polyatomic transient molecules, American Chemical Society, Washington, DC, 1994, 464. [all data]
Notes
Go To: Top, Gas phase thermochemistry data, Vibrational and/or electronic energy levels, References
- Symbols used in this document:
ΔfH°gas Enthalpy of formation of gas 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.