Ethane, 1,1-difluoro-
- Formula: C2H4F2
- Molecular weight: 66.0500
- IUPAC Standard InChI: InChI=1S/C2H4F2/c1-2(3)4/h2H,1H3
- IUPAC Standard InChIKey: NPNPZTNLOVBDOC-UHFFFAOYSA-N
- CAS Registry Number: 75-37-6
- 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: Ethylidene fluoride; Algofrene Type 67; Freon 152a; FC 152a; Genetron 152a; R 152a; 1,1-Difluoroethane; CH3CHF2; Ethylidene difluoride; GENETRON 100; Propellant 152a; Halocarbon 152A; UN 1030; Dymel 152; Dymel 152A; HFC 152a
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Gas phase ion energetics 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 evaluated as indicated in comments:
L - Sharon G. Lias
Data compiled as indicated in comments:
LBLHLM - Sharon G. Lias, John E. Bartmess, Joel F. Liebman, John L. Holmes, Rhoda D. Levin, and W. Gary Mallard
LLK - Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi
RDSH - Henry M. Rosenstock, Keith Draxl, Bruce W. Steiner, and John T. Herron
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| IE (evaluated) | 11.865 ± 0.030 | eV | N/A | N/A | L |
Ionization energy determinations
| IE (eV) | Method | Reference | Comment |
|---|---|---|---|
| 11.865 ± 0.030 | PI | Heinis, Bar, et al., 1985 | LBLHLM |
| 11.864 ± 0.029 | PI | Heinis, Bar, et al., 1984 | LBLHLM |
| 12.68 | EI | Lifshitz and Long, 1965 | RDSH |
| 12.8 | PE | Sauvageau, Doucet, et al., 1974 | Vertical value; LLK |
Appearance energy determinations
Gas Chromatography
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: 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 | 326. | Zenkevich, 2005 | 25. m/0.20 mm/0.10 μm, N2/He, 6. K/min; Tstart: 50. C; Tend: 250. C |
Normal alkane RI, non-polar column, custom temperature program
| Column type | Active phase | I | Reference | Comment |
|---|---|---|---|---|
| Capillary | SPB-1 | 242. | Flanagan, Streete, et al., 1997 | 60. m/0.53 mm/5. μm, He; Program: 40C(6min) => 5C/min => 80C => 10C/min => 200C |
References
Go To: Top, Gas phase ion energetics data, Gas Chromatography, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Heinis, Bar, et al., 1985
Heinis, T.; Bar, R.; Borlin, K.; Jungen, M.,
Photoionization mass spectrometry of 1,1-difluoroethane,
Chem. Phys., 1985, 94, 235. [all data]
Heinis, Bar, et al., 1984
Heinis, T.; Bar, R.; Borlin, K.; Jungen, M.,
Photoionization of 1,1-difluoroethane: The structure of the C2H3F2+ ions,
Chem. Phys. Lett., 1984, 105, 327. [all data]
Lifshitz and Long, 1965
Lifshitz, C.; Long, F.A.,
Appearance potentials and mass spectra of fluorinated ethylenes. II. Heats offormation of fluorinated species and their positive ions,
J. Phys. Chem., 1965, 69, 3731. [all data]
Sauvageau, Doucet, et al., 1974
Sauvageau, P.; Doucet, J.; Gilbert, R.; Sandorfy, C.,
Vacuum ultraviolet and photoelectron spectra of fluoroethanes,
J. Chem. Phys., 1974, 61, 391. [all data]
Williamson, LeBreton, et al., 1976
Williamson, A.D.; LeBreton, P.R.; Beauchamp, J.L.,
Photoionization mass spectrometry of 2-fluoropropane and 2,2-difluoropropane. A novel determination of the proton affinity of vinyl fluoride and 1,1-difluoroethylene,
J. Am. Chem. Soc., 1976, 98, 2705. [all data]
Simmie and Tschuikow-Roux, 1971
Simmie, J.M.; Tschuikow-Roux, E.,
Mass spectrum, appearance potentials and bond dissociation energies of 1,1,1-trifluoroethane,
Int. J. Mass Spectrom. Ion Phys., 1971, 7, 41. [all data]
Zenkevich, 2005
Zenkevich, I.G.,
Experimentally measured retention indices., 2005. [all data]
Flanagan, Streete, et al., 1997
Flanagan, R.J.; Streete, P.J.; Ramsey, J.D.,
Volatile Substance Abuse, UNODC Technical Series, No 5, United Nations, Office on Drugs and Crime, Vienna International Centre, PO Box 500, A-1400 Vienna, Austria, 1997, 56, retrieved from http://www.odccp.org/pdf/technicalseries1997-01-011.pdf. [all data]
Notes
Go To: Top, Gas phase ion energetics data, Gas Chromatography, References
- Symbols used in this document:
AE Appearance energy IE (evaluated) Recommended ionization energy - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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