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, NIST Free Links, 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, NIST Free Links, 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, NIST Free Links, 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, NIST Free Links, References
- Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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