Ethyne, fluoro-
- Formula: C2HF
- Molecular weight: 44.0277
- IUPAC Standard InChIKey: IAWCIZWLKMTPLL-UHFFFAOYSA-N
- CAS Registry Number: 2713-09-9
- 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: Fluoroacetylene; Acetylene, fluoro-; Monofluoroacetylene; HC≡CF; Fluoroethyne; C2HF
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Reaction 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 by: John E. Bartmess
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
C2F- + =
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | <1540. ± 79. | kJ/mol | D-EA | Thynne and MacNiel, 1971 | gas phase; From CH2=CF2 |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | <1510. ± 79. | kJ/mol | H-TS | Thynne and MacNiel, 1971 | gas phase; From CH2=CF2 |
Gas phase ion energetics 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 evaluated as indicated in comments:
HL - Edward P. Hunter and Sharon G. Lias
L - Sharon G. Lias
Data compiled as indicated in comments:
B - John E. Bartmess
LLK - Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi
RDSH - Henry M. Rosenstock, Keith Draxl, Bruce W. Steiner, and John T. Herron
View reactions leading to C2HF+ (ion structure unspecified)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
IE (evaluated) | 11.26 | eV | N/A | N/A | L |
Quantity | Value | Units | Method | Reference | Comment |
Proton affinity (review) | 686. | kJ/mol | N/A | Hunter and Lias, 1998 | HL |
Quantity | Value | Units | Method | Reference | Comment |
Gas basicity | 661.3 | kJ/mol | N/A | Hunter and Lias, 1998 | HL |
Ionization energy determinations
IE (eV) | Method | Reference | Comment |
---|---|---|---|
11.26 | PE | Bieri, Schmelzer, et al., 1980 | LLK |
11.5 ± 0.1 | EI | Kloster-Jensen, Pascual, et al., 1970 | RDSH |
11.26 | PE | Haink, Heilbronner, et al., 1970 | RDSH |
Appearance energy determinations
Ion | AE (eV) | Other Products | Method | Reference | Comment |
---|---|---|---|---|---|
CF+ | 17.0 ± 0.1 | CH | EI | Kloster-Jensen, Pascual, et al., 1970 | RDSH |
CH+ | 19.2 ± 0.2 | CF | EI | Kloster-Jensen, Pascual, et al., 1970 | RDSH |
De-protonation reactions
C2F- + =
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | <1540. ± 79. | kJ/mol | D-EA | Thynne and MacNiel, 1971 | gas phase; From CH2=CF2; B |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | <1510. ± 79. | kJ/mol | H-TS | Thynne and MacNiel, 1971 | gas phase; From CH2=CF2; B |
References
Go To: Top, Reaction 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.
Thynne and MacNiel, 1971
Thynne, J.C.J.; MacNiel, K.A.G.,
Negative ion formation by ethylene and 1,1-difluoroethylene,
J. Phys. Chem., 1971, 75, 2584. [all data]
Hunter and Lias, 1998
Hunter, E.P.; Lias, S.G.,
Evaluated Gas Phase Basicities and Proton Affinities of Molecules: An Update,
J. Phys. Chem. Ref. Data, 1998, 27, 3, 413-656, https://doi.org/10.1063/1.556018
. [all data]
Bieri, Schmelzer, et al., 1980
Bieri, G.; Schmelzer, A.; Asbrink, L.; Jonsson, M.,
Fluorine and the fluoroderivatives of acetylene and diacetylene studied by 30.4 nm He(II) photoelectron spectroscopy,
Chem. Phys., 1980, 49, 213. [all data]
Kloster-Jensen, Pascual, et al., 1970
Kloster-Jensen, E.; Pascual, C.; Vogt, J.,
Mass spectrometric studies of mono- and di-haloacetylenes,,
Helv. Chim. Acta, 1970, 53, 2109. [all data]
Haink, Heilbronner, et al., 1970
Haink, H.J.; Heilbronner, E.; Hornung, V.; KlosterJensen, E.,
Die Photoelektron-Spektren der Monohalogenacetylene,
Helv. Chim. Acta, 1970, 53, 1073. [all data]
Notes
Go To: Top, Reaction thermochemistry data, Gas phase ion energetics data, References
- Symbols used in this document:
AE Appearance energy IE (evaluated) Recommended ionization energy ΔrG° Free energy of reaction at standard conditions ΔrH° Enthalpy of reaction at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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