CCO radical anion

Gas phase thermochemistry data

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

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

Data compiled by: John E. Bartmess

Quantity Value Units Method Reference Comment
ΔfH°gas154. ± 10.kJ/molR-EAGarand, Yacovitch, et al., 2008Singlet state 0.654 eV up
ΔfH°gas<338.9kJ/molIMRBDawson, Noest, et al., 1979O- + cis-CHF=CHF ->.
ΔfH°gas26. ± 19.kJ/molEIAECollin and Locht, 1970From ketene

Vibrational and/or electronic energy levels

Go To: Top, Gas phase thermochemistry data, References, Notes

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 = 18643 ± 5 gas Zengin, Persson, et al., 1996
Choi, Mordaunt, et al., 1998
Garand, Yacovitch, et al., 2008

State:   A
 Energy 
 (cm-1) 		  Med.   Transition   λmin 
 (nm) 		  λmax 
 (nm) 		  References
To = 12234 Ne A-X 541 818 Fulara, Grutter, et al., 1998
Vib. 
sym. 		  No.   Approximate 
 type of mode 		  cm-1   Med.   Method   References
Σ+ 1 CO stretch 2082 ± 3 Ne AB Fulara, Grutter, et al., 1998
Π 2 Bend 656 ± 3 Ne AB Fulara, Grutter, et al., 1998
Σ+ 3 CC stretch 1185 ± 3 Ne AB Fulara, Grutter, et al., 1998

State:   X

Vib. 
sym. 		  No.   Approximate 
 type of mode 		  cm-1   Med.   Method   References
Σ+ 1 CO stretch 1900 T gas PE Oakes, Jones, et al., 1983
Zengin, Persson, et al., 1996
1 CO stretch 1876.7 ± 1.0 Ne IR Fulara, Grutter, et al., 1998

Additional references: Jacox, 1994, page 76; Jacox, 1998, page 183; Jacox, 2003, page 121

Notes

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, Gas phase thermochemistry data, 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.

Garand, Yacovitch, et al., 2008
Garand, E.; Yacovitch, T.I.; Neumark, D.M., Slow photoelectron imaging spectroscopy of CCO- and CCS-, J. Chem. Phys., 2008, 129, 7, 074312, https://doi.org/10.1063/1.2969819 . [all data]

Dawson, Noest, et al., 1979
Dawson, J.H.J.; Noest, A.J.; Nibbering, N.M.M., The gas phase allyl anion, Int. J. Mass Spectrom. Ion Phys., 1979, 29, 205. [all data]

Collin and Locht, 1970
Collin, J.E.; Locht, R., Positive and negative ion formation in ketene by electron impact, Intern. J. Mass Spectrom. Ion Phys., 1970, 3, 465. [all data]

Zengin, Persson, et al., 1996
Zengin, V.; Persson, B.J.; Strong, K.M.; Continetti, R.E., Study of the Low-lying Electronic States of CCO by Photoelectron Spectroscopy of CCO- and ab initio calculations., J. Chem. Phys., 1996, 105, 22, 9740, https://doi.org/10.1063/1.473000 . [all data]

Choi, Mordaunt, et al., 1998
Choi, H.; Mordaunt, D.H.; Bise, R.T.; Taylor, T.R.; Neumark, D.M., Photodissociation of triplet and singlet states of the CCO radical, J. Chem. Phys., 1998, 108, 10, 4070, https://doi.org/10.1063/1.475839 . [all data]

Fulara, Grutter, et al., 1998
Fulara, J.; Grutter, M.; Wyss, M.; Maier, J.P., A, J. Phys. Chem. A, 1998, 102, 20, 3459, https://doi.org/10.1021/jp980879t . [all data]

Oakes, Jones, et al., 1983
Oakes, J.M.; Jones, M.E.; Bierbaum, V.M.; Ellison, G.B., Photoelectron spectroscopy of CCO- and HCCO-, J. Phys. Chem., 1983, 87, 4810. [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, Gas phase thermochemistry data, Vibrational and/or electronic energy levels, References