Methyl radical, iodo-
- Formula: CH2I
- Molecular weight: 140.9310
- IUPAC Standard InChI: InChI=1S/CH2I/c1-2/h1H2
- IUPAC Standard InChIKey: KPJPHPFMCOKUMW-UHFFFAOYSA-N
- CAS Registry Number: 16519-98-5
- 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 by: Sharon G. Lias, John E. Bartmess, Joel F. Liebman, John L. Holmes, Rhoda D. Levin, and W. Gary Mallard
View reactions leading to CH2I+ (ion structure unspecified)
Ionization energy determinations
| IE (eV) | Method | Reference | Comment |
|---|---|---|---|
| 8.40 ± 0.03 | PE | Andrews, Dyke, et al., 1984 | |
| 8.52 ± 0.03 | PE | Andrews, Dyke, et al., 1984 | Vertical value |
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 | |
|---|---|---|---|---|---|---|---|
| CH stretch | 3050 | T | gas | IR | Baughcum and Leone, 1980 | ||
| CH2 scissors | 1330 | T | gas | IR | Baughcum and Leone, 1980 | ||
| CH2 scissors | 1331.5 | s | Ar | IR | Smith and Andrews, 1973 | ||
| CI stretch | 611 | w m | Ar | IR | Smith and Andrews, 1973 | ||
| Umbrella | 375 | s | Ar | IR | Smith and Andrews, 1973 | ||
Additional references: Jacox, 1994, page 150; Bailleux, Kania, et al., 2010
Notes
| w | Weak |
| m | Medium |
| s | Strong |
| T | Tentative assignment or approximate value |
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.
Andrews, Dyke, et al., 1984
Andrews, L.; Dyke, J.M.; Jonathan, N.; Keddar, N.; orris, A.,
The first bands in the photoelectron spectra of the CH2Br, CD2Br, CHBr2, and CH2I free radicals,
J. Phys. Chem., 1984, 88, 1950. [all data]
Baughcum and Leone, 1980
Baughcum, S.L.; Leone, S.R.,
Photofragmentation infrared emission studies of vibrationally excited free radicals CH3 and CH2I,
J. Chem. Phys., 1980, 72, 12, 6531, https://doi.org/10.1063/1.439111
. [all data]
Smith and Andrews, 1973
Smith, D.W.; Andrews, L.,
Matrix infrared spectrum and bonding in the monoiodomethyl radical,
J. Chem. Phys., 1973, 58, 12, 5222, https://doi.org/10.1063/1.1679134
. [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]
Bailleux, Kania, et al., 2010
Bailleux, S.; Kania, P.; Skrinsky, J.; Okabayashi, T.; Tanimoto, M.; Matsumoto, S.; Ozeki, H.,
Hyperfine Resolved Fourier Transform Microwave and Millimeter-Wave Spectroscopy of the Iodomethyl Radical, CH,
J. Phys. Chem. A, 2010, 114, 14, 4776, https://doi.org/10.1021/jp909323h
. [all data]
Notes
Go To: Top, Gas phase ion energetics data, Vibrational and/or electronic energy levels, References
- Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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