C2I2+
- Formula: C2I2+
- Molecular weight: 277.8298
- CAS Registry Number: 37234-14-3
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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: D
Energy (cm-1) |
Med. | Transition | λmin (nm) |
λmax (nm) |
References | ||
---|---|---|---|---|---|---|---|
To = 52040 ± 160 | gas | Heilbronner, Hornung, et al., 1970 | |||||
State: C
Energy (cm-1) |
Med. | Transition | λmin (nm) |
λmax (nm) |
References | ||
---|---|---|---|---|---|---|---|
To = 41874 ± 160 | gas | Heilbronner, Hornung, et al., 1970 | |||||
State: B
Energy (cm-1) |
Med. | Transition | λmin (nm) |
λmax (nm) |
References | ||
---|---|---|---|---|---|---|---|
To = 25334 ± 160 | gas | Heilbronner, Hornung, et al., 1970 | |||||
State: A
Energy (cm-1) |
Med. | Transition | λmin (nm) |
λmax (nm) |
References | ||
---|---|---|---|---|---|---|---|
To = 17912 ± 80 | gas | Heilbronner, Hornung, et al., 1970 | |||||
Klapstein, Maier, et al., 1983 | |||||||
To = 12971 | gas | A-X | 670 | 846 | Klapstein, Maier, et al., 1983 | ||
To = 12987 ± 3 | Ne | A-X | 613 | 770 | Leutwyler, Maier, et al., 1984 | ||
State: A2Πg1/2
Vib. sym. |
No. | Approximate type of mode |
cm-1 | Med. | Method | References | |
---|---|---|---|---|---|---|---|
Σg+ | 2 | CI stretch | 195 | gas | EF | Klapstein, Maier, et al., 1983 | |
Πg | 4 | Bend | 224 | gas | EF | Klapstein, Maier, et al., 1983 | |
State: A2Πg3/2
Vib. sym. |
No. | Approximate type of mode |
cm-1 | Med. | Method | References | |
---|---|---|---|---|---|---|---|
Σg+ | 1 | CC stretch | 2146 ± 5 | Ne | AB | Leutwyler, Maier, et al., 1984 | |
2 | CI stretch | 204 | gas | EF | Klapstein, Maier, et al., 1983 | ||
2 | CI stretch | 195 ± 5 | Ne | AB | Leutwyler, Maier, et al., 1984 | ||
Πg | 4 | Bend | 225 | H T | gas | EF | Klapstein, Maier, et al., 1983 |
4 | Bend | 227 ± 5 | H | Ne | AB | Leutwyler, Maier, et al., 1984 | |
State: X2Πu1/2
Vib. sym. |
No. | Approximate type of mode |
cm-1 | Med. | Method | References | |
---|---|---|---|---|---|---|---|
Σg+ | 1 | CC stretch | 1990 | gas | EF | Klapstein, Maier, et al., 1983 | |
2 | CI stretch | 234 | gas | EF | Klapstein, Maier, et al., 1983 | ||
Πg | 4 | Bend | 214 | H | gas | EF | Klapstein, Maier, et al., 1983 |
Πu | 5 | Bend | 94 | H | gas | EF | Klapstein, Maier, et al., 1983 |
State: X2Πu3/2
Vib. sym. |
No. | Approximate type of mode |
cm-1 | Med. | Method | References | |
---|---|---|---|---|---|---|---|
Σg+ | 2 | CI stretch | 242 | gas | EF | Klapstein, Maier, et al., 1983 | |
Πg | 4 | Bend | 221 | H | gas | EF | Klapstein, Maier, et al., 1983 |
Πu | 5 | Bend | 101 | H | gas | EF | Klapstein, Maier, et al., 1983 |
Additional references: Jacox, 1994, page 192; Allan, Kloster-Jensen, et al., 1977; Maier and Thommen, 1982
Notes
H | (1/2)(2ν) |
T | Tentative assignment or approximate value |
o | Energy separation between the v = 0 levels of the excited and electronic ground states. |
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.
Heilbronner, Hornung, et al., 1970
Heilbronner, E.; Hornung, V.; Kloster-Jensen, E.,
Die Photoelektron-Spektren der Dihalogen-acetylene,
Helv. Chim. Acta, 1970, 53, 331. [all data]
Klapstein, Maier, et al., 1983
Klapstein, D.; Maier, J.P.; Zambach, W.,
Emission spectra of rotationally cooled dihaloacetylene cations in the gas phase: A2Π(Ω,g) → x2Π(Ω,u) band systems,
Chem. Phys., 1983, 77, 463. [all data]
Leutwyler, Maier, et al., 1984
Leutwyler, S.; Maier, J.P.; Spittel, U.,
Electronic absorption spectra of dihaloacetylene cations in neon matrices,
Mol. Phys., 1984, 51, 2, 437, https://doi.org/10.1080/00268978400100291
. [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]
Allan, Kloster-Jensen, et al., 1977
Allan, M.; Kloster-Jensen, E.; Maier, J.P.,
J. Chem. Soc., 1977, Faraday Trans. 2 73, 1406. [all data]
Maier and Thommen, 1982
Maier, J.P.; Thommen, F.,
Relaxation of dihaloacetylene cations in their A and B states studied by photoelectron-photoion coincidence spectroscopy,
Chem. Phys., 1982, 70, 325. [all data]
Notes
Go To: Top, Vibrational and/or electronic energy levels, References
- Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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