H2CBr-Br
- Formula: CH2Br2
- Molecular weight: 173.835
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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: ?
| Energy (cm-1) |
Med. | Transition | λmin (nm) |
λmax (nm) |
References | ||
|---|---|---|---|---|---|---|---|
| Txd = 28000 | Ar | Andrews, Prochaska, et al., 1979 | |||||
State: ?
| Energy (cm-1) |
Med. | Transition | λmin (nm) |
λmax (nm) |
References | ||
|---|---|---|---|---|---|---|---|
| Td = 17500 | U | Ar | Andrews, Prochaska, et al., 1979 | ||||
State: X
| Vib. sym. |
No. | Approximate type of mode |
cm-1 | Med. | Method | References | |
|---|---|---|---|---|---|---|---|
| CH2 stretch | 3156.3 | w | Ar | IR | Maier, Reisenauer, et al., 1990 | ||
| CH2 stretch | 3030.4 | w | Ar | IR | Maier, Reisenauer, et al., 1990 | ||
| CH2 scissors | 1333.6 | w | Ar | IR | Maier, Reisenauer, et al., 1990 | ||
| 1129 | m T | Ar | IR | Andrews, Prochaska, et al., 1979 | |||
| 695.2 | w m | Ar | IR | Andrews, Prochaska, et al., 1979 Maier, Reisenauer, et al., 1990 | |||
| CBr stretch | 684.4 | vs | Ar | IR | Andrews, Prochaska, et al., 1979 Kelsall and Andrews, 1983 Maier, Reisenauer, et al., 1990 | ||
Additional references: Jacox, 1994, page 264
Notes
| w | Weak |
| m | Medium |
| vs | Very strong |
| U | Upper bound |
| T | Tentative assignment or approximate value |
| x | Energy separation between the band maximum of the excited electronic state and the v = 0 level of the ground state. |
| d | Photodissociation threshold |
References
Go To: Top, 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, Prochaska, et al., 1979
Andrews, L.; Prochaska, F.T.; Ault, B.S.,
Matrix photoionization and radiolysis of dichloromethane and dibromomethane. Infrared and ultraviolet absorption spectra and photolysis of CH2Cl2+ and CH2Br2+,
J. Am. Chem. Soc., 1979, 101, 1, 9, https://doi.org/10.1021/ja00495a002
. [all data]
Maier, Reisenauer, et al., 1990
Maier, G.; Reisenauer, H.P.; Hu, J.; Schaad, L.J.; Hess, B.A., Jr.,
Photochemical isomerization of dihalomethanes in argon matrixes,
J. Am. Chem. Soc., 1990, 112, 13, 5117, https://doi.org/10.1021/ja00169a020
. [all data]
Kelsall and Andrews, 1983
Kelsall, B.J.; Andrews, L.,
FTIR spectroscopic studies of the matrix photoionization and photolysis products of methylene halides,
J. Mol. Spectrosc., 1983, 97, 2, 362, https://doi.org/10.1016/0022-2852(83)90274-6
. [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]
Notes
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- Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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