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C8-


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   «lambda»min 
 (nm) 
 «lambda»max 
 (nm) 
 References

Td = 35330 ± 50 gas Yang, Taylor, et al., 1988
Arnold, Bradforth, et al., 1991
Xu, Burton, et al., 1997

State:   (2) 2Piu


 Energy 
 (cm-1
 Med.   Transition   «lambda»min 
 (nm) 
 «lambda»max 
 (nm) 
 References

To = 16305 gas 446 614 Zhao, de Beer, et al., 1996
Tulej, Kirkwood, et al., 1998
To = 16295 ± 5 Ne 438 614 Freivogel, Grutter, et al., 1997


Vib. 
sym. 
 No.   Approximate 
 type of mode 
 cm-1   Med.   Method   References

Sigmag+ 1 2104 gas MPD Tulej, Kirkwood, et al., 1998
1 2125 ± 10 Ne AB Freivogel, Grutter, et al., 1997
2 1821 ± 10 Ne AB Freivogel, Grutter, et al., 1997
4 469 ± 8 Ne AB Freivogel, Grutter, et al., 1997
Pig 8 487 ± 5 H Ne AB Freivogel, Grutter, et al., 1997

State:   C


 Energy 
 (cm-1
 Med.   Transition   «lambda»min 
 (nm) 
 «lambda»max 
 (nm) 
 References

To = 13014 gas C-X 639 774 Zhao, de Beer, et al., 1996
Tulej, Kirkwood, et al., 1998
To = 12933 ± 5 Ne C-X 665 775 Freivogel, Fulara, et al., 1995


Vib. 
sym. 
 No.   Approximate 
 type of mode 
 cm-1   Med.   Method   References

Sigmag+ 1 2087 gas PD Zhao, de Beer, et al., 1996
2 2039 gas MPD Tulej, Kirkwood, et al., 1998
2 2055 ± 5 Ne AB Freivogel, Fulara, et al., 1995
3 959 ± 5 Ne AB Freivogel, Fulara, et al., 1995
4 450 gas PD MPD Zhao, de Beer, et al., 1996
Tulej, Kirkwood, et al., 1998
4 475 ± 5 Ne AB Freivogel, Fulara, et al., 1995

State:   2Su+


 Energy 
 (cm-1
 Med.   Transition   «lambda»min 
 (nm) 
 «lambda»max 
 (nm) 
 References

To = 9545 ± 2 Ne 817 1048 Freivogel, Grutter, et al., 1997


Vib. 
sym. 
 No.   Approximate 
 type of mode 
 cm-1   Med.   Method   References

Sigmag+ 1 2010 ± 4 Ne AB Freivogel, Grutter, et al., 1997
2 1956 ± 4 Ne AB Freivogel, Grutter, et al., 1997

State:   X


Vib. 
sym. 
 No.   Approximate 
 type of mode 
 cm-1   Med.   Method   References

Sigmau+ 6 1796.0 Ne IR Freivogel, Grutter, et al., 1997, 2

Additional references: Jacox, 1994, page 381; Jacox, 1998, page 340; Jacox, 2003, page 361

Notes

H(1/2)(2nu)
oEnergy separation between the v = 0 levels of the excited and electronic ground states.
dPhotodissociation 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.

Yang, Taylor, et al., 1988
Yang, S.; Taylor, K.J.; Craycraft, M.J.; Conceicao, J.; Pettiette, C.L.; Cheshnovsky, O.; Smalley, R.E., UPS of 2--30-atom carbon clusters: Chains and rings, Chem. Phys. Lett., 1988, 144, 5-6, 431, https://doi.org/10.1016/0009-2614(88)87291-9 . [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]

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]

Zhao, de Beer, et al., 1996
Zhao, Y.; de Beer, E.; Xu, C.; Taylor, T.; Neumark, D.M., Spectroscopy and electron detachment dynamics of C-4, C-6, and C-8, J. Chem. Phys., 1996, 105, 12, 4905, https://doi.org/10.1063/1.472341 . [all data]

Tulej, Kirkwood, et al., 1998
Tulej, M.; Kirkwood, D.A.; Pachkov, M.; Maier, J.P., Gas-Phase Electronic Transitions of Carbon Chain Anions Coinciding with Diffuse Interstellar Bands, Astrophys. J., 1998, 506, 1, L69, https://doi.org/10.1086/311637 . [all data]

Freivogel, Grutter, et al., 1997
Freivogel, P.; Grutter, M.; Forney, D.; Maier, J.P., Electronic absorption spectra of carbon chain anions C[sub 2n][sup -] (n=4--7) in neon matrices, J. Chem. Phys., 1997, 107, 12, 4468, https://doi.org/10.1063/1.475314 . [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]

Freivogel, Grutter, et al., 1997, 2
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]

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]


Notes

Go To: Top, Vibrational and/or electronic energy levels, References