Fluorodichloromethane
- Formula: CHCl2F
- Molecular weight: 102.923
- IUPAC Standard InChIKey: UMNKXPULIDJLSU-UHFFFAOYSA-N
- CAS Registry Number: 75-43-4
- 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: Methane, dichlorofluoro-; Algofrene Type 5; Arcton 7; Dichlorofluoromethane; Dichloromonofluoromethane; F 21; Freon F 21; Freon 21; FC 21; Genetron 21; Monofluorodichloromethane; CHFCl2; R 21; Dwuchlorofluorometan; UN 1029; CHCl2F; Refrigerant 21; Halon 112; Fluorocarbon-21; R 21 (refrigerant)
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Gas phase ion energetics data
Go To: Top, Ion clustering data, Mass spectrum (electron ionization), Gas Chromatography, References, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Data compiled as indicated in comments:
B - John E. Bartmess
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
Ionization energy determinations
IE (eV) | Method | Reference | Comment |
---|---|---|---|
11.75 ± 0.02 | PI | Wang and Leroi, 1983 | LBLHLM |
11.5 | PE | Novak, Cvitas, et al., 1981 | LLK |
12.39 ± 0.20 | EI | Hobrock and Kiser, 1964 | RDSH |
11.92 | PE | Novak, Cvitas, et al., 1981 | Vertical value; LLK |
12.0 | PE | Doucet, Sauvageau, et al., 1973 | Vertical value; LLK |
Appearance energy determinations
Ion | AE (eV) | Other Products | Method | Reference | Comment |
---|---|---|---|---|---|
CCl+ | 18.3 ± 0.2 | ? | EI | Hobrock and Kiser, 1964 | RDSH |
CF+ | 16.9 ± 0.2 | ? | EI | Hobrock and Kiser, 1964 | RDSH |
CHCl+ | 19.0 ± 0.2 | ? | EI | Hobrock and Kiser, 1964 | RDSH |
CHFCl+ | 12.69 ± 0.15 | Cl | EI | Hobrock and Kiser, 1964 | RDSH |
Cl+ | 23.0 ± 0.3 | ? | EI | Hobrock and Kiser, 1964 | RDSH |
De-protonation reactions
CCl2F- + =
By formula: CCl2F- + H+ = CHCl2F
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 359.37 | kcal/mol | Acid | Poutsma, Paulino, et al., 1997 | gas phase; B |
ΔrH° | 360.2 ± 2.1 | kcal/mol | G+TS | Poutsma, Paulino, et al., 1997 | gas phase; B |
ΔrH° | <359.9 ± 4.7 | kcal/mol | D-EA | Illenberger, Baumgartel, et al., 1979 | gas phase; From CF2Cl2; B |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 351.62 ± 0.60 | kcal/mol | H-TS | Poutsma, Paulino, et al., 1997 | gas phase; B |
ΔrG° | 352.5 ± 2.0 | kcal/mol | IMRB | Poutsma, Paulino, et al., 1997 | gas phase; B |
Ion clustering data
Go To: Top, Gas phase ion energetics data, Mass spectrum (electron ionization), Gas Chromatography, References, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Data compiled as indicated in comments:
B - John E. Bartmess
M - Michael M. Meot-Ner (Mautner) and Sharon G. Lias
Note: Please consider using the reaction search for this species. This page allows searching of all reactions involving this species. Searches may be limited to ion clustering reactions. A general reaction search form is also available.
Clustering reactions
By formula: CN- + CHCl2F = (CN- • CHCl2F)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 17.8 ± 3.5 | kcal/mol | IMRE | Larson and McMahon, 1987 | gas phase; B,M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 24.7 | cal/mol*K | N/A | Larson and McMahon, 1987 | gas phase; switching reaction,Thermochemical ladder(CN-)H2O, Entropy change calculated or estimated; Payzant, Yamdagni, et al., 1971; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 10.4 ± 2.3 | kcal/mol | IMRE | Larson and McMahon, 1987 | gas phase; B,M |
By formula: Cl- + CHCl2F = (Cl- • CHCl2F)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 17.6 ± 2.0 | kcal/mol | IMRE | Larson and McMahon, 1984 | gas phase; B,M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 23.1 | cal/mol*K | N/A | Larson and McMahon, 1984 | gas phase; switching reaction(Cl-)CF3H, Entropy change calculated or estimated; Larson and McMahon, 1984, 2; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 10.7 ± 2.0 | kcal/mol | IMRE | Larson and McMahon, 1984 | gas phase; B,M |
Mass spectrum (electron ionization)
Go To: Top, Gas phase ion energetics data, Ion clustering data, Gas Chromatography, 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
Spectrum
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Additional Data
View image of digitized spectrum (can be printed in landscape orientation).
Due to licensing restrictions, this spectrum cannot be downloaded.
Owner | NIST Mass Spectrometry Data Center Collection (C) 2014 copyright by the U.S. Secretary of Commerce on behalf of the United States of America. All rights reserved. |
---|---|
NIST MS number | 19989 |
Gas Chromatography
Go To: Top, Gas phase ion energetics data, Ion clustering data, Mass spectrum (electron ionization), 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 | 462. | Zenkevich, 2005 | 25. m/0.20 mm/0.10 μm, N2/He, 6. K/min; Tstart: 50. C; Tend: 250. C |
Capillary | BP-1 | 491. | Health Safety Executive, 2000 | 50. m/0.22 mm/0.75 μm, He, 5. K/min; Tstart: 50. C; Tend: 200. C |
References
Go To: Top, Gas phase ion energetics data, Ion clustering data, Mass spectrum (electron ionization), Gas Chromatography, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Wang and Leroi, 1983
Wang, F.C.-Y.; Leroi, G.E.,
Photoionization and fragmentation of halogenated methanes,
Ann. Isr. Phys. Soc., 1983, 6, 210. [all data]
Novak, Cvitas, et al., 1981
Novak, I.; Cvitas, T.; Klasinc, L.; Gusten, H.,
Photoelectron spectra of some halogenomethanes,
J. Chem. Soc. Faraday Trans. 2, 1981, 77, 2049. [all data]
Hobrock and Kiser, 1964
Hobrock, D.L.; Kiser, R.W.,
Electron impact studies of some trihalomethanes: trichloromethane, dichlorofluoro-methane, chlorodifluoromethane, and trifluoromethane,
J. Phys. Chem., 1964, 68, 575. [all data]
Doucet, Sauvageau, et al., 1973
Doucet, J.; Sauvageau, P.; Sandorfy, C.,
Vacuum ultraviolet and photoelectron spectra of fluoro-chloro derivatives of methane,
J. Chem. Phys., 1973, 58, 3708. [all data]
Poutsma, Paulino, et al., 1997
Poutsma, J.C.; Paulino, J.A.; Squires, R.R.,
Absolute Heats of Formation of CHCl, CHF, and CClF. A Gas-Phase Experimental and G2 Theoretical Study.,
J. Phys. Chem. A, 1997, 101, 29, 5327, https://doi.org/10.1021/jp970778f
. [all data]
Illenberger, Baumgartel, et al., 1979
Illenberger, T.; Baumgartel, H.; Scheunemann, H.,
Negative Ion Formation in CF2Cl2, CF3Cl, and CFCl3 Following Low Energy (0-10eV) Impact with Near Monoenergetic Electrons,
Chem. Phys., 1979, 37, 1, 21, https://doi.org/10.1016/0301-0104(79)80003-8
. [all data]
Larson and McMahon, 1987
Larson, J.W.; McMahon, T.B.,
Hydrogen bonding in gas phase anions. The energetics of interaction between cyanide ion and bronsted acids,
J. Am. Chem. Soc., 1987, 109, 6230. [all data]
Payzant, Yamdagni, et al., 1971
Payzant, J.D.; Yamdagni, R.; Kebarle, P.,
Hydration of CN-, NO2-, NO3-, and HO- in the gas phase,
Can. J. Chem., 1971, 49, 3308. [all data]
Larson and McMahon, 1984
Larson, J.W.; McMahon, T.B.,
Hydrogen bonding in gas phase anions. An experimental investigation of the interaction between chloride ion and bronsted acids from ICR chloride exchange equilibria,
J. Am. Chem. Soc., 1984, 106, 517. [all data]
Larson and McMahon, 1984, 2
Larson, J.W.; McMahon, T.B.,
Gas phase negative ion chemistry of alkylchloroformates,
Can. J. Chem., 1984, 62, 675. [all data]
Zenkevich, 2005
Zenkevich, I.G.,
Experimentally measured retention indices., 2005. [all data]
Health Safety Executive, 2000
Health Safety Executive,
MDHS 96 Volatile organic compounds in air - Laboratory method using pumed solid sorbent tubes, solvent desorption and gas chromatography
in Methods for the Determination of Hazardous Substances (MDHS) guidance, Crown, Colegate, Norwich, 2000, 1-24, retrieved from http://www.hse.gov.uk/pubns/mdhs/pdfs/mdhs96.pdf. [all data]
Notes
Go To: Top, Gas phase ion energetics data, Ion clustering data, Mass spectrum (electron ionization), Gas Chromatography, References
- Symbols used in this document:
AE Appearance energy ΔrG° Free energy of reaction at standard conditions ΔrH° Enthalpy of reaction at standard conditions ΔrS° Entropy of reaction at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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