Carbon dioxide anion

Formula: CO₂^-
Molecular weight: 44.0100
CAS Registry Number: 14485-07-5
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Other data available:
- Gas phase thermochemistry data
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Vibrational and/or electronic energy levels

State: ?

Energy (cm^-1)		Med.	References


T_xx_d = 11300	T	gas	Coe, 1986

State: X

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


a₁	1	Sym. stretch	1253.8	w	Ne	IR	Thompson and Jacox, 1999
	2	Bend	714.1	w	Ne	IR	Thompson and Jacox, 1999
b₂	3	Asym. stretch	1658.3	vs	Ne	IR	Jacox and Thompson, 1989 Godbout, Halasinski, et al., 1996 Zhou and Andrews, 1999 Thompson and Jacox, 1999
	3	Asym. stretch	1657.0		Ar	IR	Zhou and Andrews, 1999, 2

Additional references: Jacox, 1994, page 90; Jacox, 1998, page 193; Jacox, 2003, page 134

Notes

Weak

Very strong

Tentative assignment or approximate value

Energy separation between the band maxima of both the excited state and the ground state of a molecular cation, derived from a photoelectron spectrum.

Photodissociation threshold

References

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Coe, 1986
Coe, J.V., Ph.D. thesis, 1986, Johns Hopkins University, Baltimore, MD. [all data]

Thompson and Jacox, 1999
Thompson, W.E.; Jacox, M.E., The vibrational spectra of CO[sub 2][sup +], (CO[sub 2])[sub 2][sup +], CO[sub 2][sup -], and (CO[sub 2])[sub 2][sup -] trapped in solid neon, J. Chem. Phys., 1999, 111, 10, 4487, https://doi.org/10.1063/1.479212 . [all data]

Jacox and Thompson, 1989
Jacox, M.E.; Thompson, W.E., The vibrational spectra of molecular ions isolated in solid neon. I. CO+2 and CO-2, J. Chem. Phys., 1989, 91, 3, 1410, https://doi.org/10.1063/1.457100 . [all data]

Godbout, Halasinski, et al., 1996
Godbout, J.T.; Halasinski, T.M.; Leroi, G.E.; Allison, J., Matrix Isolation of Mass-Selected Cations: Are Counterions Present and How Are They Formed?, J. Phys. Chem., 1996, 100, 8, 2892, https://doi.org/10.1021/jp952482k . [all data]

Zhou and Andrews, 1999
Zhou, M.; Andrews, L., Infrared spectra of the C[sub 2]O[sub 4][sup +] cation and C[sub 2]O[sub 4][sup -] anion isolated in solid neon, J. Chem. Phys., 1999, 110, 14, 6820, https://doi.org/10.1063/1.478586 . [all data]

Zhou and Andrews, 1999, 2
Zhou, M.; Andrews, L., Infrared spectra of the CO[sub 2][sup -] and C[sub 2]O[sub 4][sup -] anions isolated in solid argon, J. Chem. Phys., 1999, 110, 5, 2414, https://doi.org/10.1063/1.477947 . [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

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Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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