C8H-

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:   1S+
 Energy 
 (cm-1) 		  Med.   Transition   λmin 
 (nm) 		  λmax 
 (nm) 		  References
To = 35174 ± 25 Ne 1S+-X 275 285 Grutter, Wyss, et al., 1999
Vib. 
sym. 		  No.   Approximate 
 type of mode 		  cm-1   Med.   Method   References
Σ+ C-C stretch 720 ± 35 Ne AB Grutter, Wyss, et al., 1999
C-C stretch 464 ± 35 Ne AB Grutter, Wyss, et al., 1999

State:   ?
 Energy 
 (cm-1) 		  Med.   Transition   λmin 
 (nm) 		  λmax 
 (nm) 		  References
Td = 32032 ± 8 gas Taylor, Xu, et al., 1998
Pino, Tulej, et al., 2002
Garand, Yacovitch, et al., 2010

State:   1Π
 Energy 
 (cm-1) 		  Med.   Transition   λmin 
 (nm) 		  λmax 
 (nm) 		  References
To = 31497 ± 3 gas 1Π-X 310 318 Pino, Tulej, et al., 2002
Vib. 
sym. 		  No.   Approximate 
 type of mode 		  cm-1   Med.   Method   References
Π Deformation 160 H T gas MPD Pino, Tulej, et al., 2002

State:   ?
 Energy 
 (cm-1) 		  Med.   Transition   λmin 
 (nm) 		  λmax 
 (nm) 		  References
To = 30498 ± 3 gas 317 328 Pino, Tulej, et al., 2002

State:   ?

Vib. 
sym. 		  No.   Approximate 
 type of mode 		  cm-1   Med.   Method   References
Deformation 477 T gas MPD Pino, Tulej, et al., 2002

State:   X

Vib. 
sym. 		  No.   Approximate 
 type of mode 		  cm-1   Med.   Method   References
Σ+ CC stretch 2106 Ne IR Grutter, Wyss, et al., 1999
CC stretch 2021 Ne IR Grutter, Wyss, et al., 1999

Additional references: Jacox, 2003, page 374; Gupta, Brunken, et al., 2007

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

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Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Grutter, Wyss, et al., 1999
Grutter, M.; Wyss, M.; Maier, J.P., Electronic absorption spectra of C[sub 2n]H[sup -], C[sub 2n-1]N[sup -] (n=4--7), and C[sub 2n-1]N (n=3--7) chains in neon matrices, J. Chem. Phys., 1999, 110, 3, 1492, https://doi.org/10.1063/1.478022 . [all data]

Taylor, Xu, et al., 1998
Taylor, T.R.; Xu, C.; Neumark, D.M., Photoelectron spectra of the C[sub 2n]H[sup -] (n=1--4) and C[sub 2n]D[sup -] (n=1--3) anions, J. Chem. Phys., 1998, 108, 24, 10018, https://doi.org/10.1063/1.476462 . [all data]

Pino, Tulej, et al., 2002
Pino, T.; Tulej, M.; Guthe, F.; Pachkov, M.; Maier, J.P., Photodetachment spectroscopy of the C[sub 2n]H[sup -] (n=2--4) anions in the vicinity of their electron detachment threshold, J. Chem. Phys., 2002, 116, 14, 6126, https://doi.org/10.1063/1.1451248 . [all data]

Garand, Yacovitch, et al., 2010
Garand, E.; Yacovitch, T.I.; Zhou, J.; Sheehan, S.M.; Neumark, D.M., Slow photoelectron velocity-map imaging of the CnH- (n = 5--9) anions, Chem. Sci., 2010, 2, 2, 192, https://doi.org/10.1039/c0sc00164c . [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]

Gupta, Brunken, et al., 2007
Gupta, H.; Brunken, S.; Tamassia, F.; Gottlieb, C.A.; McCarthy, M.C.; Thaddeus, P., Rotational Spectra of the Carbon Chain Negative Ions C, Astrophys. J., 2007, 655, 1, L57, https://doi.org/10.1086/511766 . [all data]

Notes

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