Chloromethyl radical
- Formula: CH2Cl
- Molecular weight: 49.480
- IUPAC Standard InChIKey: WBLIXGSTEMXDSM-UHFFFAOYSA-N
- CAS Registry Number: 6806-86-6
- Chemical structure:
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Gas phase ion energetics 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 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
B - John E. Bartmess
View reactions leading to CH2Cl+ (ion structure unspecified)
Electron affinity determinations
EA (eV) | Method | Reference | Comment |
---|---|---|---|
0.74 ± 0.16 | D-EA | Ingemann and Nibbering, 1985 | B |
Ionization energy determinations
IE (eV) | Method | Reference | Comment |
---|---|---|---|
8.75 ± 0.01 | PE | Andrews, Dyke, et al., 1984 | LBLHLM |
8.80 | EI | Lossing, 1972 | LLK |
9.32 | EI | Lossing, Kebarle, et al., 1959 | RDSH |
9.70 ± 0.09 | EI | Reed and Snedden, 1956 | RDSH |
8.87 ± 0.01 | PE | Andrews, Dyke, et al., 1984 | Vertical value; LBLHLM |
Vibrational and/or electronic energy levels
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: Marilyn E. Jacox
State: X
Vib. sym. |
No. | Approximate type of mode |
cm-1 | Med. | Method | References | |
---|---|---|---|---|---|---|---|
a1 | 1 | CH2 s-stretch | 3055.08 | gas | IR | Whitney, Haeber, et al., 2006 | |
2 | CH2 scissors | 1391 | w m | Ar | IR | Andrews and Smith, 1970 Fridgen, Zhang, et al., 2000 | |
3 | CCl stretch | 827 | s | Ar | IR | Jacox and Milligan, 1970 Andrews and Smith, 1970 Fridgen, Zhang, et al., 2000 | |
3 | CCl stretch | 827 | Kr | IR | Fridgen, Zhang, et al., 2000 | ||
3 | CCl stretch | 829 | Xe | IR | Fridgen, Zhang, et al., 2000 | ||
b1 | 4 | OPLA | 402 | s | Ar | IR | Jacox and Milligan, 1970 Andrews and Smith, 1970 Fridgen, Zhang, et al., 2000 |
4 | OPLA | 395 | Kr | IR | Fridgen, Zhang, et al., 2000 | ||
4 | OPLA | 389 | Xe | IR | Fridgen, Zhang, et al., 2000 | ||
Additional references: Jacox, 1994, page 149; Jacox, 1998, page 228; Jacox, 2003, page 176; Michaut and Roncin, 1971; Endo, Saito, et al., 1984; Sears, Temps, et al., 1994; Bailleux, Drean, et al., 2005
Notes
w | Weak |
m | Medium |
s | Strong |
References
Go To: Top, Gas phase ion energetics 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.
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]
Andrews, Dyke, et al., 1984
Andrews, L.; Dyke, J.M.; Jonathan, N.; Keddar, N.; Morris, A.,
Photoelectron spectroscopic study of the ground states of CH2Cl+, CHCl2+, and CHFCl+,
J. Am. Chem. Soc., 1984, 106, 299. [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]
Lossing, Kebarle, et al., 1959
Lossing, F.P.; Kebarle, P.; DeSousa, J.B.,
Ionization potentials of alkyl and halogenated alkyl free radicals, 1959. [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]
Whitney, Haeber, et al., 2006
Whitney, E.S.; Haeber, T.; Schuder, M.D.; Blair, A.C.; Nesbitt, D.J.,
High-resolution infrared studies in slit supersonic discharges: CH[sub 2] stretch excitation of jet-cooled CH[sub 2]Cl radical,
J. Chem. Phys., 2006, 125, 5, 054303, https://doi.org/10.1063/1.2208612
. [all data]
Andrews and Smith, 1970
Andrews, L.; Smith, D.W.,
Matrix Infrared Spectrum and Bonding in the Monochloromethyl Radical,
J. Chem. Phys., 1970, 53, 7, 2956, https://doi.org/10.1063/1.1674422
. [all data]
Fridgen, Zhang, et al., 2000
Fridgen, T.D.; Zhang, X.K.; Parnis, J.M.; March, R.E.,
Isomerization and Fragmentation Products of CH,
J. Phys. Chem. A, 2000, 104, 16, 3487, https://doi.org/10.1021/jp993162u
. [all data]
Jacox and Milligan, 1970
Jacox, M.E.; Milligan, D.E.,
Matrix-Isolation Study of the Vacuum-Ultraviolet Photolysis of Methyl Chloride and Methylene Chloride. Infrared and Ultraviolet Spectra of the Free Radicals CCl, H2CCl, and CCl2,
J. Chem. Phys., 1970, 53, 7, 2688, https://doi.org/10.1063/1.1674392
. [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]
Jacox, 1998
Jacox, M.E.,
Vibrational and electronic energy levels of polyatomic transient molecules: supplement A,
J. Phys. Chem. Ref. Data, 1998, 27, 2, 115-393, https://doi.org/10.1063/1.556017
. [all data]
Jacox, 2003
Jacox, M.E.,
Vibrational and electronic energy levels of polyatomic transient molecules: supplement B,
J. Phys. Chem. Ref. Data, 2003, 32, 1, 1-441, https://doi.org/10.1063/1.1497629
. [all data]
Michaut and Roncin, 1971
Michaut, J.P.; Roncin, J.,
ESR study of the CH2Cl radical in a single crystal of CH3Cl,
Chem. Phys. Lett., 1971, 12, 1, 95, https://doi.org/10.1016/0009-2614(71)80624-3
. [all data]
Endo, Saito, et al., 1984
Endo, Y.; Saito, S.; Hirota, E.,
The microwave spectrum of the chloromethyl radical, CH,
Can. J. Phys., 1984, 62, 12, 1347, https://doi.org/10.1139/p84-182
. [all data]
Sears, Temps, et al., 1994
Sears, T.J.; Temps, F.; Wagner, H.G.; Wolf, M.,
Far-Infrared Laser Magnetic Resonance Spectroscopy of CH2Cl (X2B1),
J. Mol. Spectrosc., 1994, 168, 1, 136, https://doi.org/10.1006/jmsp.1994.1266
. [all data]
Bailleux, Drean, et al., 2005
Bailleux, S.; Drean, P.; Zelinger, Z.; Godon, M.,
The submillimeter-wave spectrum of the chloromethyl radical, CH2Cl, in the ground vibronic state,
J. Mol. Spectrosc., 2005, 229, 1, 140, https://doi.org/10.1016/j.jms.2004.08.008
. [all data]
Notes
Go To: Top, Gas phase ion energetics data, Vibrational and/or electronic energy levels, References
- Symbols used in this document:
EA Electron affinity - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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