Chloromethane

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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:
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 CH3Cl+ (ion structure unspecified)

Quantity Value Units Method Reference Comment
IE (evaluated)11.26 ± 0.03eVN/AN/AL
Quantity Value Units Method Reference Comment
Proton affinity (review)647.3kJ/molN/AHunter and Lias, 1998HL
Quantity Value Units Method Reference Comment
Gas basicity621.1kJ/molN/AHunter and Lias, 1998HL

Ionization energy determinations

IE (eV) Method Reference Comment
11.221SHochmann, Templet, et al., 1975LLK
11.28 ± 0.01PIWerner, Tsai, et al., 1974LLK
11.27EILossing, 1972LLK
11.29PERagle, Stenhouse, et al., 1970RDSH
11.26PEDewar and Worley, 1969RDSH
11.265 ± 0.003PINicholson, 1965RDSH
11.28PIDibeler and Walker, 1965RDSH
11.28 ± 0.01PIWatanabe, 1957RDSH
11.22 ± 0.01SPrice, 1936RDSH
11.29PEKimura, Katsumata, et al., 1981Vertical value; LLK
11.29PEUtsunomiya, Kobayashi, et al., 1980Vertical value; LLK
11.33PEUehara, Saito, et al., 1973Vertical value; LLK
11.30PEDixon, Murrell, et al., 1971Vertical value; LLK

Appearance energy determinations

Ion AE (eV) Other Products MethodReferenceComment
C+26.3 ± 0.1?EIReed and Snedden, 1956RDSH
CH+22.5 ± 0.06?EIReed and Snedden, 1956RDSH
CH2+14.6 ± 0.2HClEITsuda and Hamill, 1964RDSH
CH2Cl+12.96HEILossing, 1972LLK
CH2Cl+12.98 ± 0.07HEIMartin, Lampe, et al., 1966RDSH
CH3+13.87ClPIKrauss, Walker, et al., 1968RDSH
CH3+10.07Cl-PIDibeler and Walker, 1965RDSH
Cl+16.6 ± 0.05CH3EITsuda, Melton, et al., 1964RDSH

De-protonation reactions

CH2Cl- + Hydrogen cation = Chloromethane

By formula: CH2Cl- + H+ = CH3Cl

Quantity Value Units Method Reference Comment
Δr1672. ± 10.kJ/molEndoHierl, Henchman, et al., 1992gas phase; HO- + ClCH3: 8.8±2.3 kcal/mol endo; B
Δr1657. ± 13.kJ/molG+TSIngemann and Nibbering, 1985gas phase; B
Δr1659. ± 19.kJ/molEIAERogers, Simpson, et al., 2010gas phase; B
Δr1674. ± 8.4kJ/molIMRBPoutsma, Nash, et al., 1997gas phase; B
Δr1670. ± 17.kJ/molG+TSHenchman, Hierl, et al., 1985gas phase; HO- + MeCl: 0.38±0.1 eV endo; B
Quantity Value Units Method Reference Comment
Δr1628. ± 13.kJ/molIMREIngemann and Nibbering, 1985gas phase; B
Δr1641. ± 17.kJ/molIMRBHenchman, Hierl, et al., 1985gas phase; HO- + MeCl: 0.38±0.1 eV endo; B

Ion clustering 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 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

Bromine anion + Chloromethane = (Bromine anion • Chloromethane)

By formula: Br- + CH3Cl = (Br- • CH3Cl)

Quantity Value Units Method Reference Comment
Δr45.6 ± 4.2kJ/molTDAsLi, Ross, et al., 1996gas phase; B
Quantity Value Units Method Reference Comment
Δr20.3 ± 0.84kJ/molTDAsLi, Ross, et al., 1996gas phase; B

CH2Cl+ + Chloromethane = (CH2Cl+ • Chloromethane)

By formula: CH2Cl+ + CH3Cl = (CH2Cl+ • CH3Cl)

Quantity Value Units Method Reference Comment
Δr29.kJ/molHPMSLuczynski, Malicki, et al., 1974gas phase; DG from graph, Entropy change is questionable; M
Quantity Value Units Method Reference Comment
Δr-15.J/mol*KHPMSLuczynski, Malicki, et al., 1974gas phase; DG from graph, Entropy change is questionable; M

Free energy of reaction

ΔrG° (kJ/mol) T (K) Method Reference Comment
34.312.HPMSLuczynski, Malicki, et al., 1974gas phase; DG from graph, Entropy change is questionable; M

(CH2Cl+ • Chloromethane) + Chloromethane = (CH2Cl+ • 2Chloromethane)

By formula: (CH2Cl+ • CH3Cl) + CH3Cl = (CH2Cl+ • 2CH3Cl)

Quantity Value Units Method Reference Comment
Δr24.kJ/molHPMSLuczynski, Malicki, et al., 1974gas phase; DG from graph, Entropy change is questionable; M
Quantity Value Units Method Reference Comment
Δr29.J/mol*KHPMSLuczynski, Malicki, et al., 1974gas phase; DG from graph, Entropy change is questionable; M

Free energy of reaction

ΔrG° (kJ/mol) T (K) Method Reference Comment
18.182.HPMSLuczynski, Malicki, et al., 1974gas phase; DG from graph, Entropy change is questionable; M

Methyl cation + Chloromethane = (Methyl cation • Chloromethane)

By formula: CH3+ + CH3Cl = (CH3+ • CH3Cl)

Quantity Value Units Method Reference Comment
Δr259.kJ/molPHPMSMcMahon, Heinis, et al., 1988gas phase; switching reaction(CH3+)N2, Entropy change calculated or estimated, uses MCA(N2) = 202. kJ/mol; Foster, Williamson, et al., 1974; M

CH3Cl2- + 2Chloromethane = C2H6Cl3-

By formula: CH3Cl2- + 2CH3Cl = C2H6Cl3-

Quantity Value Units Method Reference Comment
Δr46.44kJ/molN/AHiraoka, Mizuno, et al., 2001gas phase; B
Quantity Value Units Method Reference Comment
Δr16.5kJ/molTDAsHiraoka, Mizuno, et al., 2001gas phase; B

(CH4Cl+ • Chloromethane) + Chloromethane = (CH4Cl+ • 2Chloromethane)

By formula: (CH4Cl+ • CH3Cl) + CH3Cl = (CH4Cl+ • 2CH3Cl)

Quantity Value Units Method Reference Comment
Δr18.kJ/molHPMSLuczynski, Malicki, et al., 1974gas phase; DG from graph, Entropy change is questionable; M
Quantity Value Units Method Reference Comment
Δr4.6J/mol*KHPMSLuczynski, Malicki, et al., 1974gas phase; DG from graph, Entropy change is questionable; M

Free energy of reaction

ΔrG° (kJ/mol) T (K) Method Reference Comment
17.182.HPMSLuczynski, Malicki, et al., 1974gas phase; DG from graph, Entropy change is questionable; M

CH6N+ + Chloromethane = (CH6N+ • Chloromethane)

By formula: CH6N+ + CH3Cl = (CH6N+ • CH3Cl)

Quantity Value Units Method Reference Comment
Δr44.8kJ/molPHPMSMeot-Ner, 1984gas phase; M
Quantity Value Units Method Reference Comment
Δr86.2J/mol*KPHPMSMeot-Ner, 1984gas phase; M

CN- + Chloromethane = (CN- • Chloromethane)

By formula: CN- + CH3Cl = (CN- • CH3Cl)

Quantity Value Units Method Reference Comment
Δr42.7 ± 4.2kJ/molTDAsLi, Ross, et al., 1996gas phase; B
Quantity Value Units Method Reference Comment
Δr20.5 ± 0.84kJ/molTDAsLi, Ross, et al., 1996gas phase; B

C2H5+ + Chloromethane = (C2H5+ • Chloromethane)

By formula: C2H5+ + CH3Cl = (C2H5+ • CH3Cl)

Quantity Value Units Method Reference Comment
Δr128.kJ/molPHPMSSen Sharma and Kebarle, 1978gas phase; M
Quantity Value Units Method Reference Comment
Δr128.J/mol*KPHPMSSen Sharma and Kebarle, 1978gas phase; M

C2H6Cl3- + 3Chloromethane = C3H9Cl4-

By formula: C2H6Cl3- + 3CH3Cl = C3H9Cl4-

Quantity Value Units Method Reference Comment
Δr35.1kJ/molN/AHiraoka, Mizuno, et al., 2001gas phase; B
Quantity Value Units Method Reference Comment
Δr8.95kJ/molTDAsHiraoka, Mizuno, et al., 2001gas phase; B

C3H7+ + Chloromethane = (C3H7+ • Chloromethane)

By formula: C3H7+ + CH3Cl = (C3H7+ • CH3Cl)

Quantity Value Units Method Reference Comment
Δr95.8kJ/molPHPMSSen Sharma and Kebarle, 1978gas phase; Entropy change is questionable; M
Quantity Value Units Method Reference Comment
Δr186.J/mol*KPHPMSSen Sharma and Kebarle, 1978gas phase; Entropy change is questionable; M

C3H9Cl4- + 4Chloromethane = C4H12Cl5-

By formula: C3H9Cl4- + 4CH3Cl = C4H12Cl5-

Quantity Value Units Method Reference Comment
Δr31.8kJ/molN/AHiraoka, Mizuno, et al., 2001gas phase; B
Quantity Value Units Method Reference Comment
Δr5.61kJ/molTDAsHiraoka, Mizuno, et al., 2001gas phase; B

C4H9+ + Chloromethane = (C4H9+ • Chloromethane)

By formula: C4H9+ + CH3Cl = (C4H9+ • CH3Cl)

Quantity Value Units Method Reference Comment
Δr35.kJ/molPHPMSSharma, Meza de Hojer, et al., 1985gas phase; M
Quantity Value Units Method Reference Comment
Δr80.8J/mol*KPHPMSSharma, Meza de Hojer, et al., 1985gas phase; M

C4H12Cl5- + 5Chloromethane = C5H15Cl6-

By formula: C4H12Cl5- + 5CH3Cl = C5H15Cl6-

Quantity Value Units Method Reference Comment
Δr25.9kJ/molN/AHiraoka, Mizuno, et al., 2001gas phase; B
Quantity Value Units Method Reference Comment
Δr3.5kJ/molTDAsHiraoka, Mizuno, et al., 2001gas phase; B

C5H15Cl6- + 6Chloromethane = C6H18Cl7-

By formula: C5H15Cl6- + 6CH3Cl = C6H18Cl7-

Quantity Value Units Method Reference Comment
Δr24.3kJ/molN/AHiraoka, Mizuno, et al., 2001gas phase; B
Quantity Value Units Method Reference Comment
Δr1.8kJ/molTDAsHiraoka, Mizuno, et al., 2001gas phase; B

C6H18Cl7- + 7Chloromethane = C7H21Cl8-

By formula: C6H18Cl7- + 7CH3Cl = C7H21Cl8-

Quantity Value Units Method Reference Comment
Δr20.1kJ/molN/AHiraoka, Mizuno, et al., 2001gas phase; B
Quantity Value Units Method Reference Comment
Δr2.6kJ/molTDAsHiraoka, Mizuno, et al., 2001gas phase; B

C7H21Cl8- + 8Chloromethane = C8H24Cl9-

By formula: C7H21Cl8- + 8CH3Cl = C8H24Cl9-

Quantity Value Units Method Reference Comment
Δr19.7kJ/molN/AHiraoka, Mizuno, et al., 2001gas phase; B
Quantity Value Units Method Reference Comment
Δr2.2kJ/molTDAsHiraoka, Mizuno, et al., 2001gas phase; B

Chlorine anion + Chloromethane = (Chlorine anion • Chloromethane)

By formula: Cl- + CH3Cl = (Cl- • CH3Cl)

Quantity Value Units Method Reference Comment
Δr43.5 ± 4.2kJ/molTDAsLi, Ross, et al., 1996gas phase; B
Δr49.0 ± 8.4kJ/molTDAsHiraoka, Mizuno, et al., 2001gas phase; B
Δr51.0 ± 8.4kJ/molIMRELarson and McMahon, 1984gas phase; B,M
Δr36.0 ± 0.84kJ/molTDAsDougherty, Dalton, et al., 1974gas phase; B,M
Δr63.6 ± 8.4kJ/molTDAsYamdagni and Kebarle, 1971gas phase; B
Quantity Value Units Method Reference Comment
Δr85.8J/mol*KN/ALarson and McMahon, 1984, 2gas phase; switching reaction(Cl-)t-C4H9OH, Entropy change calculated or estimated; French, Ikuta, et al., 1982; M
Δr64.0J/mol*KHPMSDougherty, Dalton, et al., 1974gas phase; Entropy change is questionable; M
Quantity Value Units Method Reference Comment
Δr24.3 ± 0.84kJ/molTDAsLi, Ross, et al., 1996gas phase; B
Δr20.3kJ/molTDAsHiraoka, Mizuno, et al., 2001gas phase; B
Δr26. ± 8.4kJ/molIMRELarson and McMahon, 1984gas phase; B,M
Δr17.2 ± 2.1kJ/molTDAsDougherty, Dalton, et al., 1974gas phase; B
Δr45.2 ± 8.4kJ/molTDAsYamdagni and Kebarle, 1971gas phase; B

Lithium ion (1+) + Chloromethane = (Lithium ion (1+) • Chloromethane)

By formula: Li+ + CH3Cl = (Li+ • CH3Cl)

Quantity Value Units Method Reference Comment
Δr100.kJ/molICRStaley and Beauchamp, 1975gas phase; switching reaction(Li+)H2O, from graph; Dzidic and Kebarle, 1970 interpolated; M

IR Spectrum

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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: Coblentz Society, Inc.

Gas Phase Spectrum

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IR spectrum
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Notice: Except where noted, spectra from this collection were measured on dispersive instruments, often in carefully selected solvents, and hence may differ in detail from measurements on FTIR instruments or in other chemical environments. More information on the manner in which spectra in this collection were collected can be found here.

Notice: Concentration information is not available for this spectrum and, therefore, molar absorptivity values cannot be derived.

Additional Data

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Owner COBLENTZ SOCIETY
Collection (C) 2018 copyright by the U.S. Secretary of Commerce
on behalf of the United States of America. All rights reserved.
Origin DOW CHEMICAL COMPANY
Source reference COBLENTZ NO. 8844
Date 1964
Name(s) chloromethane
State GAS (200 mmHg DILUTED TO A TOTAL PRESSURE OF 600 mmHg WITH NITROGEN)
Instrument DOW KBr FOREPRISM
Instrument parameters GRATING CHANGED AT 5.0, 7.5, 15.0 MICRON
Path length 5 CM
SPECTRAL CONTAMINATION DUE TO METHANE AROUND 1310 CM-1
Resolution 4
Sampling procedure TRANSMISSION
Data processing DIGITIZED BY NIST FROM HARD COPY (FROM TWO SEGMENTS)

This IR spectrum is from the Coblentz Society's evaluated infrared reference spectra collection.


Mass spectrum (electron ionization)

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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

Spectrum

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Mass spectrum
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Additional Data

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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 18894

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Vibrational and/or electronic energy levels

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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: Takehiko Shimanouchi

Symmetry:   C     Symmetry Number σ = 3


 Sym.   No   Approximate   Selected Freq.  Infrared   Raman   Comments 
 Species   type of mode   Value   Rating   Value  Phase  Value  Phase

a1 1 CH3 s-str 2937  E 2967.78 M gas 2955 VS p liq. FR(2ν5)
a1 1 CH3 s-str 2937  E 2879.28 M gas 2861 M liq. FR(2ν5)
a1 2 CH3 s-deform 1355  A 1354.9 S gas 1370 VW p liq.
a1 3 CCl str 732  A 732.1 S gas 709 VS p liq.
e 4 CH3 d-str 3039  B 3039.31 S gas 3036 M dp liq. FR(3ν6)
e 4 CH3 d-str 3039  B 3042.75 S gas 3036 M dp liq. FR(3ν6)
e 5 CH3 d-deform 1452  A 1452.1 M gas 1446 W dp liq.
e 6 CH3 rock 1017  A 1017.3 M gas 1016 W dp liq.

Source: Shimanouchi, 1972

Notes

VSVery strong
SStrong
MMedium
WWeak
VWVery weak
pPolarized
dpDepolarized
FRFermi resonance with an overtone or a combination tone indicated in the parentheses.
A0~1 cm-1 uncertainty
B1~3 cm-1 uncertainty
E15~30 cm-1 uncertainty

Gas Chromatography

Go To: Top, Gas phase ion energetics data, Ion clustering data, IR Spectrum, Mass spectrum (electron ionization), 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: NIST Mass Spectrometry Data Center, William E. Wallace, director

Kovats' RI, non-polar column, isothermal

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Column type Active phase Temperature (C) I Reference Comment
PackedSqualane80.329.Pacáková, Vojtechová, et al., 1988N2, Chezasorb AW-HMDS; Column length: 1.2 m
PackedSqualane27.324.Hively and Hinton, 1968He, Chromosorb P; Column length: 15. m; Column diameter: 0.25 mm
PackedSqualane49.326.Hively and Hinton, 1968He, Chromosorb P; Column length: 15. m; Column diameter: 0.25 mm
PackedSqualane67.327.Hively and Hinton, 1968He, Chromosorb P; Column length: 15. m; Column diameter: 0.25 mm
PackedSqualane86.329.Hively and Hinton, 1968He, Chromosorb P; Column length: 15. m; Column diameter: 0.25 mm

Van Den Dool and Kratz RI, non-polar column, temperature ramp

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Column type Active phase I Reference Comment
CapillaryPetrocol DH332.92White, Douglas, et al., 1992100. m/0.25 mm/0.5 μm, He, 1. K/min; Tstart: 30. C; Tend: 220. C
CapillaryPetrocol DH332.92White, Douglas, et al., 1992100. m/0.25 mm/0.5 μm, He, 1. K/min; Tstart: 30. C; Tend: 220. C

Normal alkane RI, non-polar column, temperature ramp

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Column type Active phase I Reference Comment
CapillaryOV-101332.Zenkevich, 200525. 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

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Column type Active phase I Reference Comment
CapillaryPolydimethyl siloxanes332.Zenkevich, Eliseenkov, et al., 2006Program: not specified
CapillaryMethyl Silicone340.Blunden, Aneja, et al., 200560. m/0.32 mm/1.0 μm, Helium; Program: -50 0C (2 min) 8 0C/min -> 200 0C (7.75 min) 25 0C -> 225 0C (8 min)
CapillaryMethyl Silicone332.Zenkevich, 1999Program: not specified
CapillaryMethyl Silicone326.Zenkevich, 1998Program: not specified
CapillaryPolydimethyl siloxanes332.Zenkevich and Chupalov, 1996Program: not specified
CapillaryPolydimethyl siloxanes332.Zenkevich and Chupalov, 1996Program: not specified

References

Go To: Top, Gas phase ion energetics data, Ion clustering data, IR Spectrum, Mass spectrum (electron ionization), Vibrational and/or electronic energy levels, Gas Chromatography, Notes

Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

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]

Hochmann, Templet, et al., 1975
Hochmann, P.; Templet, P.H.; Wang, H.-t.; McGlynn, S.P., Molecular Rydberg transitions. I. Low-energy Rydberg transitions in methyl halides, J. Chem. Phys., 1975, 62, 2588. [all data]

Werner, Tsai, et al., 1974
Werner, A.S.; Tsai, B.P.; Baer, T., Photoionization study of the ionization potentials fragmentation paths of the chlorinated methanes carbon tetrabromide, J. Chem. Phys., 1974, 60, 3650. [all data]

Lossing, 1972
Lossing, F.P., Free radicals by mass spectrometry. XLIV. Ionization potentials bond dissociation energies for chloro-and fluoromethyl radicals, Bull. Soc. Chim. Belg., 1972, 81, 125. [all data]

Ragle, Stenhouse, et al., 1970
Ragle, J.L.; Stenhouse, I.A.; Frost, D.C.; McDowell, C.A., Valence-shell ionization potentials of halomethanes by photoelectron spectroscopy. I. CH3Cl, CH3Br, CH3I. Vibrational frequencies and vibronic interaction in CH3Br+ and CH3Cl+, J. Chem. Phys., 1970, 53, 178. [all data]

Dewar and Worley, 1969
Dewar, M.J.S.; Worley, S.D., Photoelectron spectra of molecules. I. Ionization potentials of some organic molecules and their interpretation, J. Chem. Phys., 1969, 50, 654. [all data]

Nicholson, 1965
Nicholson, A.J.C., Photoionization-efficiency curves. II. False and genuine structure, J. Chem. Phys., 1965, 43, 1171. [all data]

Dibeler and Walker, 1965
Dibeler, V.H.; Walker, J.A., Ion-pair process in CH3Cl by photoionization, J. Chem. Phys., 1965, 43, 1842. [all data]

Watanabe, 1957
Watanabe, K., Ionization potentials of some molecules, J. Chem. Phys., 1957, 26, 542. [all data]

Price, 1936
Price, W.C., The far ultraviolet absorption spectra and ionization potentials of the alkyl halides. Part I, J. Chem. Phys., 1936, 4, 539. [all data]

Kimura, Katsumata, et al., 1981
Kimura, K.; Katsumata, S.; Achiba, Y.; Yamazaki, T.; Iwata, S., Ionization energies, Ab initio assignments, and valence electronic structure for 200 molecules in Handbook of HeI Photoelectron Spectra of Fundamental Organic Compounds, Japan Scientific Soc. Press, Tokyo, 1981. [all data]

Utsunomiya, Kobayashi, et al., 1980
Utsunomiya, C.; Kobayashi, T.; Nagakura, S., Photoelectron angular distribution measurements for some aliphatic alcohols, amines, halides, Bull. Chem. Soc. Jpn., 1980, 53, 1216. [all data]

Uehara, Saito, et al., 1973
Uehara, Y.; Saito, N.; Yonezawa, T., Ionization potentials of trifluoromethyl and methyl halides by photoelectron spectroscopy and calculations by extended Hucket and CNDO/2 methods, Chem. Lett., 1973, 495. [all data]

Dixon, Murrell, et al., 1971
Dixon, R.N.; Murrell, J.N.; Narayan, B., The photoelectron spectra of the halomethanes, Mol. Phys., 1971, 20, 611. [all data]

Reed and Snedden, 1956
Reed, R.I.; Snedden, W., Studies in electron impact methods. Part 6.-The formation of the methine and carbon ions, J. Chem. Soc. Faraday Trans., 1956, 55, 876. [all data]

Tsuda and Hamill, 1964
Tsuda, S.; Hamill, W.H., Structure in ionization efficiency curves near threshold from alkanes and alkyl halides, J. Chem. Phys., 1964, 41, 2713. [all data]

Martin, Lampe, et al., 1966
Martin, R.H.; Lampe, F.W.; Taft, R.W., An electron-impact study of ionization and dissociation in methoxy- and halogen- substituted methanes, J. Am. Chem. Soc., 1966, 88, 1353. [all data]

Krauss, Walker, et al., 1968
Krauss, M.; Walker, J.A.; Dibeler, V.H., Mass spectrometric study of photoionization. X. Hydrogen chloride and methyl halides, J. Res. NBS, 1968, 72A, 281. [all data]

Tsuda, Melton, et al., 1964
Tsuda, S.; Melton, C.E.; Hamill, W.H., Ionization- efficiency curves for molecular and fragment ions from methane and the methyl halides, J. Chem. Phys., 1964, 41, 689. [all data]

Hierl, Henchman, et al., 1992
Hierl, P.M.; Henchman, M.J.; Paulson, J.F., Threshold Energies for the Reactions HO- + MeX - MeOH + X- measured by Tandem Mass Spectrometry: Acidities of MeCl and MeBr, Int. J. Mass Spectrom. Ion Proc., 1992, 117, 475, https://doi.org/10.1016/0168-1176(92)80109-E . [all data]

Ingemann and Nibbering, 1985
Ingemann, S.; Nibbering, N.M.M., Gas-phase acidity of CH3X [X = P(CH3)2, SCH3, F, Cl, Br, I] compounds, J. Chem. Soc. Perkin Trans. 2, 1985, 837. [all data]

Rogers, Simpson, et al., 2010
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Notes

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