DCO

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:   4p 2Π
 Energy 
 (cm-1) 		  Med.   Transition   λmin 
 (nm) 		  λmax 
 (nm) 		  References
To = 64033.3 gas Stock
Stock, Li, et al., 1997
Vib. 
sym. 		  No.   Approximate 
 type of mode 		  cm-1   Med.   Method   References
a' 2 Bend 677.3 ± 0.5 gas DR Stock
Stock, Li, et al., 1997

State:   3p 2Π
 Energy 
 (cm-1) 		  Med.   Transition   λmin 
 (nm) 		  λmax 
 (nm) 		  References
To = 45444.0 ± 3.6 gas 3p2Π-X 187 230 Tjossem, Cool, et al., 1988
Song and Cool, 1992
Robinson, Foltynowicz, et al., 2002
Vib. 
sym. 		  No.   Approximate 
 type of mode 		  cm-1   Med.   Method   References
Π 2 Bend 646.8 w gas MPI Song and Cool, 1992
Robinson, Foltynowicz, et al., 2002
Σ+ 3 CO stretch 1900 ± 5 gas MPI Tjossem, Cool, et al., 1988

State:   B
 Energy 
 (cm-1) 		  Med.   Transition   λmin 
 (nm) 		  λmax 
 (nm) 		  References
To = 38629.53 gas B-X 236 450 Cool and Song, 1992
Tobiason, Dunlop, et al., 1995
Stock
Gripp, Kuczmann, et al., 2000
Rowling, Reid, et al., 2011
To = 38568 ± 70 Ar B-X 200 260 Milligan and Jacox, 1969
To = 38569 ± 35 CO B-X 204 260 Milligan and Jacox, 1969
Vib. 
sym. 		  No.   Approximate 
 type of mode 		  cm-1   Med.   Method   References
a' 1 CD stretch 1944.2 ± 0.2 gas MPI LF Cool and Song, 1992
Stock
Stock, Li, et al., 1997
Gripp, Kuczmann, et al., 2000
2 CO stretch,bend 1211.8 ± 0.8 gas MPI LF Cool and Song, 1992
Stock
Stock, Li, et al., 1997
Gripp, Kuczmann, et al., 2000
2 CO stretch,bend 1150 ± 35 Ar UV Milligan and Jacox, 1969
2 CO stretch,bend 1150 ± 35 CO UV Milligan and Jacox, 1969
3 Bend,CO stretch 921.6 ± 0.8 gas MPI LF Cool and Song, 1992
Stock
Stock, Li, et al., 1997
Gripp, Kuczmann, et al., 2000
3 Bend,CO stretch 925 ± 35 Ar UV Milligan and Jacox, 1969
3 Bend,CO stretch 925 ± 35 CO UV Milligan and Jacox, 1969

State:   A
 Energy 
 (cm-1) 		  Med.   Transition   λmin 
 (nm) 		  λmax 
 (nm) 		  References
To = 9162 ± 3 gas A-X 460 860 Herzberg and Ramsay, 1955
Johns, Priddle, et al., 1963
Brown and Ramsay, 1975
Rumbles, Valentini, et al., 1989
Rumbles, Lee, et al., 1990
Vib. 
sym. 		  No.   Approximate 
 type of mode 		  cm-1   Med.   Method   References
Σ+ 1 CD stretch 2547 ± 2 gas UV Herzberg and Ramsay, 1955
Johns, Priddle, et al., 1963
Brown and Ramsay, 1975
Π 2 Bend 641.7 ± 0.7 gas UV Herzberg and Ramsay, 1955
Johns, Priddle, et al., 1963
Brown and Ramsay, 1975

State:   X

Vib. 
sym. 		  No.   Approximate 
 type of mode 		  cm-1   Med.   Method   References
a' 1 CD stretch 1909.77 gas LMR LF Lowe and McKellar, 1981
Rumbles, Lee, et al., 1990
1 CD stretch 1909.77 gas SEP Stock
Stock, Li, et al., 1997
1 CD stretch 1926 s Ar IR Milligan and Jacox, 1969
1 CD stretch 1937 s CO IR Milligan and Jacox, 1964
2 Bend 846.5 gas UV LF Herzberg and Ramsay, 1955
Johns, Priddle, et al., 1963
Brown and Ramsay, 1975
Rumbles, Lee, et al., 1990
2 Bend 846.5 gas SEP Stock
Stock, Li, et al., 1997
2 Bend 850 s Ar IR Milligan and Jacox, 1969
2 Bend 852 s CO IR Ewing, Thompson, et al., 1960
Milligan and Jacox, 1964
3 CO stretch 1794.59 gas LMR LF Lowe and McKellar, 1981
Rumbles, Lee, et al., 1990
3 CO stretch 1794.59 gas SEP Stock
Stock, Li, et al., 1997
3 CO stretch 1803 m Ar IR Milligan and Jacox, 1969
3 CO stretch 1800 m CO IR Ewing, Thompson, et al., 1960
Milligan and Jacox, 1964

Notes

wWeak
mMedium
sStrong
oEnergy separation between the v = 0 levels of the excited and electronic ground states.

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.

Stock
Stock, C., Ber. Max-Planck-Inst. Stromungsforsch. 1996, 10. [all data]

Stock, Li, et al., 1997
Stock, C.; Li, X.; Keller, H.-M.; Schinke, R.; Temps, F., Unimolecular dissociation dynamics of highly vibrationally excited DCO (X 2A). I. Investigation of dissociative resonance states by stimulated emission pumping spectroscopy, J. Chem. Phys., 1997, 106, 13, 5333, https://doi.org/10.1063/1.473603 . [all data]

Tjossem, Cool, et al., 1988
Tjossem, P.J.H.; Cool, T.A.; Webb, D.A.; Grant, E.R., Spectroscopy of the 3p 2Π Rydberg state of HCO by resonance-enhanced multiphoton ionization, J. Chem. Phys., 1988, 88, 2, 617, https://doi.org/10.1063/1.454188 . [all data]

Song and Cool, 1992
Song, X.-M.; Cool, T.A., Resonance ionization spectroscopy of HCO and DCO. I. The 3p 2Π Rydberg state, J. Chem. Phys., 1992, 96, 12, 8664, https://doi.org/10.1063/1.462273 . [all data]

Robinson, Foltynowicz, et al., 2002
Robinson, J.D.; Foltynowicz, R.J.; Prentice, K.; Bell, P.; Grant, E.R., Laser-assisted (1+1´)-photon ionization-detected absorption spectrum of the 3pπ [sup 2]Π state of HCO and DCO, J. Chem. Phys., 2002, 116, 19, 8384, https://doi.org/10.1063/1.1467329 . [all data]

Cool and Song, 1992
Cool, T.A.; Song, X.-M., Resonance ionization spectroscopy of HCO and DCO. II. The B 2A' state, J. Chem. Phys., 1992, 96, 12, 8675, https://doi.org/10.1063/1.462274 . [all data]

Tobiason, Dunlop, et al., 1995
Tobiason, J.D.; Dunlop, J.R.; Rohlfing, E.A., Dispersed fluorescence spectroscopy of jet-cooled DCO, Chem. Phys. Lett., 1995, 235, 3-4, 268, https://doi.org/10.1016/0009-2614(95)00102-A . [all data]

Gripp, Kuczmann, et al., 2000
Gripp, J.; Kuczmann, A.; Stock, C.; Temps, F.; Trollsch, A., The (B 2A´←X 2A´) laser induced fluorescence excitation spectrum of DCO in a supersonic jet expansion, Phys. Chem. Chem. Phys., 2000, 2, 8, 1653, https://doi.org/10.1039/a910318j . [all data]

Rowling, Reid, et al., 2011
Rowling, S.J.; Reid, S.A.; Nauta, K.; Kable, S.H., Electronic spectroscopy of the transition of DCO and lifetimes and relative quantum yields of the state, J. Mol. Spectrosc., 2011, 270, 1, 33, https://doi.org/10.1016/j.jms.2011.08.005 . [all data]

Milligan and Jacox, 1969
Milligan, D.E.; Jacox, M.E., Matrix-Isolation Study of the Infrared and Ultraviolet Spectra of the Free Radical HCO. The Hydrocarbon Flame Bands, J. Chem. Phys., 1969, 51, 1, 277, https://doi.org/10.1063/1.1671720 . [all data]

Herzberg and Ramsay, 1955
Herzberg, G.; Ramsay, D.A., The 7500 to 4500 angstrom Absorption System of the Free HCO Radical, Proc. Roy. Soc. (London) A233, 1955, 233, 1192, 34, https://doi.org/10.1098/rspa.1955.0244 . [all data]

Johns, Priddle, et al., 1963
Johns, J.W.C.; Priddle, S.H.; Ramsay, D.A., Electronic absorption spectra of HCO and DCO radicals, Discuss. Faraday Soc., 1963, 35, 90, https://doi.org/10.1039/df9633500090 . [all data]

Brown and Ramsay, 1975
Brown, J.M.; Ramsay, D.A., Axis Switching in the Transition of HCO: Determination of Molecular Geometry, Can. J. Phys., 1975, 53, 19, 2232, https://doi.org/10.1139/p75-269 . [all data]

Rumbles, Valentini, et al., 1989
Rumbles, G.; Valentini, J.J.; Stone, B.M.; Lee, E.K.C., Laser-induced fluorescence from the predissociating formyl radical. 1. Mechanism for the predissociation of the A2A" state, J. Phys. Chem., 1989, 93, 4, 1303, https://doi.org/10.1021/j100341a026 . [all data]

Rumbles, Lee, et al., 1990
Rumbles, G.; Lee, E.K.C.; Valentini, J.J., J. Chem. Soc., 1990, Faraday Trans. 86, 3837. [all data]

Lowe and McKellar, 1981
Lowe, R.S.; McKellar, A.R.W., Laser magnetic resonance spectroscopy of the ν1 and ν3 fundamental bands of DCO, J. Chem. Phys., 1981, 74, 5, 2686, https://doi.org/10.1063/1.441437 . [all data]

Milligan and Jacox, 1964
Milligan, D.E.; Jacox, M.E., Infrared Spectrum of HCO, J. Chem. Phys., 1964, 41, 10, 3032, https://doi.org/10.1063/1.1725669 . [all data]

Ewing, Thompson, et al., 1960
Ewing, G.E.; Thompson, W.E.; Pimentel, G.C., Infrared Detection of the Formyl Radical HCO, J. Chem. Phys., 1960, 32, 3, 927, https://doi.org/10.1063/1.1730819 . [all data]

Notes

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