Methylene ion
- Formula: CH2+
- Molecular weight: 14.0260
- IUPAC Standard InChI: InChI=1S/CH/h1H/q-1
- IUPAC Standard InChIKey: VPIURJINGFGPNS-UHFFFAOYSA-N
- CAS Registry Number: 15091-72-2
- Chemical structure:
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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: Marilyn E. Jacox
State: A
| Energy (cm-1) |
Med. | Transition | λmin (nm) |
λmax (nm) |
References | ||
|---|---|---|---|---|---|---|---|
| T = 11140.92 | gas | A-X | 770 | 990 | Gottfried and Oka, 2004 | ||
State: X
| Vib. sym. |
No. | Approximate type of mode |
cm-1 | Med. | Method | References | |
|---|---|---|---|---|---|---|---|
| a1 | 2 | Bend | 968.4 | T | Ne | IR | Bunker, Kraemer, et al., 2002 |
| 2 | Bend | 961.1 | T | Ne | IR | Bunker, Kraemer, et al., 2002 | |
| b2 | 3 | CH a-stretch | 3131.37 | gas | LD | Rosslein, Gabrys, et al., 1992 | |
Additional references: Jacox, 1994, page 18; Willitsch and Merkt, 2003
Notes
| T | Tentative assignment or approximate value |
References
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Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Gottfried and Oka, 2004
Gottfried, J.L.; Oka, T.,
Near-infrared electronic spectrum of CH[sub 2][sup +],
J. Chem. Phys., 2004, 121, 23, 11527, https://doi.org/10.1063/1.1835265
. [all data]
Bunker, Kraemer, et al., 2002
Bunker, P.R.; Kraemer, W.P.; Jensen, P.; Lee, Y.-C.; Lee, Y.-P.,
The Matrix Isolation Spectrum of the CH2+ Ion,
J. Mol. Spectrosc., 2002, 216, 2, 419, https://doi.org/10.1006/jmsp.2002.8636
. [all data]
Rosslein, Gabrys, et al., 1992
Rosslein, M.; Gabrys, C.M.; Jagod, M.-F.; Oka, T.,
Detection of the infrared spectrum of CH2+,
J. Mol. Spectrosc., 1992, 153, 1-2, 738, https://doi.org/10.1016/0022-2852(92)90508-L
. [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]
Willitsch and Merkt, 2003
Willitsch, S.; Merkt, F.,
Characterization of the X [sup 2]A[sub 1] (0,0,0) ground vibronic state of CH[sub 2][sup +] by pulsed-field-ionization zero-kinetic-energy photoelectron spectroscopy,
J. Chem. Phys., 2003, 118, 5, 2235, https://doi.org/10.1063/1.1531619
. [all data]
Notes
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- Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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