C8
- Formula: C8
- Molecular weight: 96.0856
- CAS Registry Number: 107603-01-0
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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: 2 3Su-
| Energy (cm-1) |
Med. | Transition | λmin (nm) |
λmax (nm) |
References | ||
|---|---|---|---|---|---|---|---|
| Tx = 38600 | gas | Boguslavskiy and Maier, 2006 | |||||
| To = 36071 ± 26 | Ne | Grutter, Wyss, et al., 1999 | |||||
State: ?
| Energy (cm-1) |
Med. | Transition | λmin (nm) |
λmax (nm) |
References | ||
|---|---|---|---|---|---|---|---|
| To = 32934 ± 22 | Ne | 285 | 304 | Grutter, Wyss, et al., 1999 | |||
| Vib. sym. |
No. | Approximate type of mode |
cm-1 | Med. | Method | References | |
|---|---|---|---|---|---|---|---|
| Σg+ | 3 | 1639 ± 34 | Ne | AB | Grutter, Wyss, et al., 1999 | ||
| 4 | 473 ± 32 | Ne | AB | Grutter, Wyss, et al., 1999 | |||
State: 3Su-
| Energy (cm-1) |
Med. | Transition | λmin (nm) |
λmax (nm) |
References | ||
|---|---|---|---|---|---|---|---|
| To = 15630 ± 5 | Ne | 3Su--X | 550 | 640 | Freivogel, Fulara, et al., 1995 | ||
| Vib. sym. |
No. | Approximate type of mode |
cm-1 | Med. | Method | References | |
|---|---|---|---|---|---|---|---|
| Σg+ | 1 | 2075 ± 5 | Ne | AB | Freivogel, Fulara, et al., 1995 | ||
| 4 | 471 ± 5 | Ne | AB | Freivogel, Fulara, et al., 1995 | |||
State: 3Πg
| Energy (cm-1) |
Med. | Transition | λmin (nm) |
λmax (nm) |
References | ||
|---|---|---|---|---|---|---|---|
| To = 8310 ± 160 | gas | Xu, Burton, et al., 1997 | |||||
State: 3Su+
| Energy (cm-1) |
Med. | Transition | λmin (nm) |
λmax (nm) |
References | ||
|---|---|---|---|---|---|---|---|
| To = 6290 ± 160 | gas | Xu, Burton, et al., 1997 | |||||
State: 1Sg+
| Energy (cm-1) |
Med. | Transition | λmin (nm) |
λmax (nm) |
References | ||
|---|---|---|---|---|---|---|---|
| To = 930 ± 120 | gas | Xu, Burton, et al., 1997 | |||||
State: 1Dg
| Energy (cm-1) |
Med. | Transition | λmin (nm) |
λmax (nm) |
References | ||
|---|---|---|---|---|---|---|---|
| To = 570 ± 120 | gas | Xu, Burton, et al., 1997 | |||||
| Vib. sym. |
No. | Approximate type of mode |
cm-1 | Med. | Method | References | |
|---|---|---|---|---|---|---|---|
| Σg+ | 1 | Sym. stretch | 1903 ± 50 | gas | PE | Xu, Burton, et al., 1997 | |
| 3 | Sym. stretch | 1355 ± 50 | gas | PE | Xu, Burton, et al., 1997 | ||
State: X
| Vib. sym. |
No. | Approximate type of mode |
cm-1 | Med. | Method | References | |
|---|---|---|---|---|---|---|---|
| Σg+ | 1 | Sym. stretch | 1928 ± 50 | gas | PE | Xu, Burton, et al., 1997 | |
| 3 | Sym. stretch | 1361 ± 50 | gas | PE | Xu, Burton, et al., 1997 | ||
| 4 | Sym. stretch | 565 | T | gas | PE | Arnold, Bradforth, et al., 1991 | |
| Σu- | 5 | 2067.98 | gas | DL | Neubauer-Guenther, Giesen, et al., 2003 | ||
| 5 | 2067.8 | Ne | IR | Freivogel, Fulara, et al., 1995 Freivogel, Grutter, et al., 1997 Tam, Macler, et al., 1997 | |||
| 5 | 2063.9 | Ar | IR | Forney, Grutter, et al., 1996 | |||
| 5 | 2065.3 | T | Kr | IR | Szczepanski, Ekern, et al., 1996 | ||
| 6 | 1707.8 | Ne | IR | Forney, Grutter, et al., 1996 Szczepanski, Ekern, et al., 1996 Freivogel, Grutter, et al., 1997 | |||
| 6 | 1705.6 | Ar | IR | Forney, Grutter, et al., 1996 | |||
| 6 | 1706.0 | T | Kr | IR | Szczepanski, Ekern, et al., 1996 | ||
Additional references: Jacox, 1994, page 381; Jacox, 1998, page 340; Jacox, 2003, page 360; Van Zee, Ferrante, et al., 1988
Notes
| T | Tentative assignment or approximate value |
| o | Energy separation between the v = 0 levels of the excited and electronic ground states. |
| x | Energy separation between the band maximum of the excited electronic state and the v = 0 level of the ground state. |
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.
Boguslavskiy and Maier, 2006
Boguslavskiy, A.; Maier, J.P.,
Gas phase electronic spectra of the carbon chains C[sub 5], C[sub 6], C[sub 8], and C[sub 9],
J. Chem. Phys., 2006, 125, 9, 094308, https://doi.org/10.1063/1.2276848
. [all data]
Grutter, Wyss, et al., 1999
Grutter, M.; Wyss, M.; Riaplov, E.; Maier, J.P.; Peyerimhoff, S.D.; Hanrath, M.,
Electronic absorption spectra of linear C[sub 6], C[sub 8] and cyclic C[sub 10], C[sub 12] in neon matrices,
J. Chem. Phys., 1999, 111, 16, 7397, https://doi.org/10.1063/1.480062
. [all data]
Freivogel, Fulara, et al., 1995
Freivogel, P.; Fulara, J.; Jakobi, M.; Forney, D.; Maier, J.P.,
Electronic absorption spectra of linear carbon chains in neon matrices. II. C-2n, C2n, and C2nH,
J. Chem. Phys., 1995, 103, 1, 54, https://doi.org/10.1063/1.469621
. [all data]
Xu, Burton, et al., 1997
Xu, C.; Burton, G.R.; Taylor, T.R.; Neumark, D.M.,
Photoelectron spectroscopy of C[sub 4][sup -], C[sub 6][sup -], and C[sub 8][sup -],
J. Chem. Phys., 1997, 107, 9, 3428, https://doi.org/10.1063/1.474715
. [all data]
Arnold, Bradforth, et al., 1991
Arnold, D.W.; Bradforth, S.E.; Kitsopoulos, T.N.; Neumark, D.M.,
Vibrationally Resolved Spectra of C2-C11 by Anion Photoelectron Spectroscopy,
J. Chem. Phys., 1991, 95, 12, 8753, https://doi.org/10.1063/1.461211
. [all data]
Neubauer-Guenther, Giesen, et al., 2003
Neubauer-Guenther, P.; Giesen, T.F.; Berndt, U.; Fuchs, G.; Winnewisser, G.,
The Cologne Carbon Cluster Experiment: ro-vibrational spectroscopy on C8 and other small carbon clusters,
Spectrochim. Acta A59, 2003, 59, 3, 431, https://doi.org/10.1016/S1386-1425(02)00380-3
. [all data]
Freivogel, Grutter, et al., 1997
Freivogel, P.; Grutter, M.; Forney, D.; Maier, J.P.,
Infrared bands of mass-selected carbon chains Cn (n = 8-12) and Cn- (n = 5-10, 12) in neon matrices,
Chem. Phys., 1997, 216, 3, 401, https://doi.org/10.1016/S0301-0104(97)00038-4
. [all data]
Tam, Macler, et al., 1997
Tam, S.; Macler, M.; Fajardo, M.E.,
Matrix isolation spectroscopy of laser ablated carbon species in Ne, D[sub 2], and H[sub 2] matrices,
J. Chem. Phys., 1997, 106, 22, 8955, https://doi.org/10.1063/1.474028
. [all data]
Forney, Grutter, et al., 1996
Forney, D.; Grutter, M.; Freivogel, P.; Maier, J.P.,
Proc. 10th Int. Symp. Atomic, 1996, Molecular, Cluster, Ion, and Surf. Physics,. [all data]
Szczepanski, Ekern, et al., 1996
Szczepanski, J.; Ekern, S.; Chapo, C.; Vala, M.,
Infrared spectroscopy of matrix-isolated carbon clusters, with emphasis on C8 and C9,
Chem. Phys., 1996, 211, 1-3, 359, https://doi.org/10.1016/0301-0104(96)00212-1
. [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]
Jacox, 1998
Jacox, M.E.,
Vibrational and electronic energy levels of polyatomic transient molecules: supplement A,
J. Phys. Chem. Ref. Data, 1998, 27, 2, 115-393, https://doi.org/10.1063/1.556017
. [all data]
Jacox, 2003
Jacox, M.E.,
Vibrational and electronic energy levels of polyatomic transient molecules: supplement B,
J. Phys. Chem. Ref. Data, 2003, 32, 1, 1-441, https://doi.org/10.1063/1.1497629
. [all data]
Van Zee, Ferrante, et al., 1988
Van Zee, R.J.; Ferrante, R.F.; Zeringue, K.J.; Weltner, W., Jr.,
Electron spin resonance of the C6, C8, and C10 molecules,
J. Chem. Phys., 1988, 88, 6, 3465, https://doi.org/10.1063/1.453895
. [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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