C6 anion

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
Td = 33725 ± 10 gas Yang, Taylor, et al., 1988
Arnold, Bradforth, et al., 1991
Arnold, Zhao, et al., 1992
Xu, Burton, et al., 1997

State:   F
 Energy 
 (cm-1) 		  Med.   Transition   λmin 
 (nm) 		  λmax 
 (nm) 		  References
To = 33680 T gas Arnold, Zhao, et al., 1992
Vib. 
sym. 		  No.   Approximate 
 type of mode 		  cm-1   Med.   Method   References
Σg+ 1 2058 ± 5 gas PE Arnold, Zhao, et al., 1992
2 1307 ± 5 gas PE Arnold, Zhao, et al., 1992
3 480 ± 2 gas PE Arnold, Zhao, et al., 1992
Σu+ 5 837 H T gas PE Arnold, Zhao, et al., 1992
Πg 7 195 H T gas PE Arnold, Zhao, et al., 1992
Πu 8 313 H T gas PE Arnold, Zhao, et al., 1992
9 93 H T gas PE Arnold, Zhao, et al., 1992

State:   (3) 2Πg
 Energy 
 (cm-1) 		  Med.   Transition   λmin 
 (nm) 		  λmax 
 (nm) 		  References
To = 22517 ± 10 Ne 401 445 Freivogel, Grutter, et al., 1997
Vib. 
sym. 		  No.   Approximate 
 type of mode 		  cm-1   Med.   Method   References
Σg+ 2 1861 ± 17 Ne AB Freivogel, Grutter, et al., 1997
3 626 ± 15 Ne AB Freivogel, Grutter, et al., 1997
Πu 9 157 ± 7 H Ne AB Freivogel, Grutter, et al., 1997

State:   (2) 2Πg
 Energy 
 (cm-1) 		  Med.   Transition   λmin 
 (nm) 		  λmax 
 (nm) 		  References
To = 20064 ± 8 Ne 470 499 Freivogel, Grutter, et al., 1997
Vib. 
sym. 		  No.   Approximate 
 type of mode 		  cm-1   Med.   Method   References
Σg+ 3 597 ± 12 Ne AB Freivogel, Grutter, et al., 1997
Πg 7 237 ± 6 H Ne AB Freivogel, Grutter, et al., 1997
Πu 9 152 ± 6 H Ne AB Freivogel, Grutter, et al., 1997

State:   C
 Energy 
 (cm-1) 		  Med.   Transition   λmin 
 (nm) 		  λmax 
 (nm) 		  References
To = 16476 gas C-X 445 629 Zhao, de Beer, et al., 1996
Tulej, Kirkwood, et al., 1998
To = 16458 ± 5 Ne C-X 539 608 Forney, Fulara, et al., 1995
To = 16239 Ar C-X 573 616 Szczepanski, Ekern, et al., 1997
Vib. 
sym. 		  No.   Approximate 
 type of mode 		  cm-1   Med.   Method   References
Σg+ 1 CC stretch 2052 gas PD Zhao, de Beer, et al., 1996
1 CC stretch 2064 ± 5 Ne AB Forney, Fulara, et al., 1995
2 CC stretch 1767 gas PD Zhao, de Beer, et al., 1996
2 CC stretch 1817 ± 5 Ne AB Forney, Fulara, et al., 1995
3 C-C stretch 605 gas PD Zhao, de Beer, et al., 1996
Tulej, Kirkwood, et al., 1998
3 C-C stretch 607 ± 5 Ne AB Forney, Fulara, et al., 1995
3 C-C stretch 605 T Ar AB Szczepanski, Ekern, et al., 1997
Πg 8 245 H gas PD Zhao, de Beer, et al., 1996
Πu 9 110 H gas PD Zhao, de Beer, et al., 1996

State:   B
 Energy 
 (cm-1) 		  Med.   Transition   λmin 
 (nm) 		  λmax 
 (nm) 		  References
To = 11380 ± 400 gas Bragg, Verlet, et al., 2004

State:   A
 Energy 
 (cm-1) 		  Med.   Transition   λmin 
 (nm) 		  λmax 
 (nm) 		  References
To = 9352 ± 2 Ne A-X 737 1070 Freivogel, Grutter, et al., 1997
Vib. 
sym. 		  No.   Approximate 
 type of mode 		  cm-1   Med.   Method   References
Σg+ 1 2111 ± 4 Ne AB Freivogel, Grutter, et al., 1997
2 1912 ± 4 Ne AB Freivogel, Grutter, et al., 1997
3 651 ± 3 Ne AB Freivogel, Grutter, et al., 1997
Πg 7 238 ± 2 H Ne AB Freivogel, Grutter, et al., 1997
Πu 9 128 ± 2 H Ne AB Freivogel, Grutter, et al., 1997

State:   X

Vib. 
sym. 		  No.   Approximate 
 type of mode 		  cm-1   Med.   Method   References
Σg+ 1 Sym. stretch 2083 Ar Ra Szczepanski, Auerbach, et al., 1997
2 Sym. stretch 1775 Ar Ra Szczepanski, Auerbach, et al., 1997
3 C-C stretch 564 gas PD Zhao, de Beer, et al., 1996
3 C-C stretch 634 Ar Ra Szczepanski, Auerbach, et al., 1997
Σu+ 4 Asym. stretch 1938.5 Ne IR Freivogel, Grutter, et al., 1997, 2
4 Asym. stretch 1936.7 Ar IR Szczepanski, Ekern, et al., 1997
Πg 7 220 T gas PE Arnold, Zhao, et al., 1992
8 201 H gas PD Zhao, de Beer, et al., 1996
8 234 H Ar Ra Szczepanski, Auerbach, et al., 1997
Πu 9 111 T gas PE Arnold, Zhao, et al., 1992

Additional references: Jacox, 1994, page 342; Jacox, 1998, page 318; Jacox, 2003, page 326; Frischkorn, Bragg, et al., 2001

Notes

H(1/2)(2ν)
TTentative assignment or approximate value
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]

Arnold, Zhao, et al., 1992
Arnold, C.C.; Zhao, Y.X.; Kitsopoulos, T.N.; Neumark, D.M., Study of C6(-) and C6 with Threshold Photodetachment Spectroscopy and Autodetachment Spectroscopy, J. Chem. Phys., 1992, 97, 9, 6121, https://doi.org/10.1063/1.463722 . [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]

Freivogel, Grutter, et al., 1997
Freivogel, P.; Grutter, M.; Forney, D.; Maier, J.P., Electronic absorption spectra of C[sub 4][sup -] and C[sub 6][sup -] chains in neon matrices, J. Chem. Phys., 1997, 107, 1, 22, https://doi.org/10.1063/1.474369 . [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]

Forney, Fulara, et al., 1995
Forney, D.; Fulara, J.; Freivogel, P.; Jakobi, M.; Lessen, D.; Maier, J.P., Electronic absorption spectra of linear carbon chains in neon matrices. I. C-6, C6, and C6H, J. Chem. Phys., 1995, 103, 1, 48, https://doi.org/10.1063/1.469620 . [all data]

Szczepanski, Ekern, et al., 1997
Szczepanski, J.; Ekern, S.; Vala, M., Vibrational Spectroscopy of Small Matrix-Isolated Linear Carbon Cluster Anions, J. Phys. Chem. A, 1997, 101, 10, 1841, https://doi.org/10.1021/jp963200z . [all data]

Bragg, Verlet, et al., 2004
Bragg, A.E.; Verlet, J.R.R.; Kammrath, A.; Neumark, D.M., C[sub 6]-] electronic relaxation dynamics probed via time-resolved photoelectron imaging, J. Chem. Phys., 2004, 121, 8, 3515, https://doi.org/10.1063/1.1769368 . [all data]

Szczepanski, Auerbach, et al., 1997
Szczepanski, J.; Auerbach, E.; Vala, M., C, J. Phys. Chem. A, 1997, 101, 49, 9296, https://doi.org/10.1021/jp972547e . [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]

Frischkorn, Bragg, et al., 2001
Frischkorn, C.; Bragg, A.E.; Davis, A.V.; Wester, R.; Neumark, D.M., Electronic relaxation dynamics of carbon cluster anions: Excitation of the C [sup 2]Π[sub g]←X [sup 2]Π[sub u] transition in C[sub 6][sup -], J. Chem. Phys., 2001, 115, 24, 11185, https://doi.org/10.1063/1.1421378 . [all data]

Notes

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