C2F4+

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:   H,I
 Energy 
 (cm-1) 		  Med.   Transition   λmin 
 (nm) 		  λmax 
 (nm) 		  References
To = 73020 ± 320 gas Lake and Thompson, 1970
Bieri, Niessen, et al., 1981
Jarvis, Boyle, et al., 1998

State:   G
 Energy 
 (cm-1) 		  Med.   Transition   λmin 
 (nm) 		  λmax 
 (nm) 		  References
Tx = 65190 ± 320 gas Brundle, Robin, et al., 1972
Sell and Kuppermann, 1979
Bieri, Niessen, et al., 1981

State:   F
 Energy 
 (cm-1) 		  Med.   Transition   λmin 
 (nm) 		  λmax 
 (nm) 		  References
To = 59460 ± 400 gas Lake and Thompson, 1970
Brundle, Robin, et al., 1972
Sell and Kuppermann, 1979
Bieri, Niessen, et al., 1981
Jarvis, Boyle, et al., 1998
Vib. 
sym. 		  No.   Approximate 
 type of mode 		  cm-1   Med.   Method   References
ag 2 CF s-stretch 766 ± 40 gas PE TPE Lake and Thompson, 1970
Jarvis, Boyle, et al., 1998
3 CF2 scissors 330 ± 80 gas PE Lake and Thompson, 1970

State:   B,C,D,E
 Energy 
 (cm-1) 		  Med.   Transition   λmin 
 (nm) 		  λmax 
 (nm) 		  References
Tx = 52000 T gas Lake and Thompson, 1970
Brundle, Robin, et al., 1972
Sell and Kuppermann, 1979
Bieri, Niessen, et al., 1981

State:   A
 Energy 
 (cm-1) 		  Med.   Transition   λmin 
 (nm) 		  λmax 
 (nm) 		  References
Tx = 46880 ± 320 gas Lake and Thompson, 1970
Brundle, Robin, et al., 1972
Sell and Kuppermann, 1979
Bieri, Niessen, et al., 1981

State:   H

Vib. 
sym. 		  No.   Approximate 
 type of mode 		  cm-1   Med.   Method   References
ag 2 CF s-stretch 806 ± 40 gas PE TPE Lake and Thompson, 1970
Jarvis, Boyle, et al., 1998

State:   X

Vib. 
sym. 		  No.   Approximate 
 type of mode 		  cm-1   Med.   Method   References
ag 1 C=C stretch 1686 ± 40 gas PE Lake and Thompson, 1970
Brundle, Robin, et al., 1972
Sell and Kuppermann, 1979
Jarvis, Boyle, et al., 1998
2 CF s-stretch 766 ± 40 gas PE Lake and Thompson, 1970
Brundle, Robin, et al., 1972
Sell and Kuppermann, 1979
Jarvis, Boyle, et al., 1998
3 CF2 scissors 371 ± 40 gas PE Brundle, Robin, et al., 1972
Sell and Kuppermann, 1979
Jarvis, Boyle, et al., 1998

Additional references: Jacox, 1994, page 351; Jacox, 2003, page 331

Notes

TTentative assignment or approximate value
oEnergy separation between the v = 0 levels of the excited and electronic ground states.
xEnergy separation between the band maximum of the excited electronic state and the v = 0 level of the ground state.

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.

Lake and Thompson, 1970
Lake, R.F.; Thompson, H., Photoelectron spectra of halogenated ethylenes, Proc. Roy. Soc. (London), 1970, A315, 323. [all data]

Bieri, Niessen, et al., 1981
Bieri, G.; Niessen, W.V.; Asbrink, L.; Svensson, A., The He(II) photoelectron spectra of the fluorosubstituted ethylenes and their analysis by the green's function method, Chem. Phys., 1981, 60, 61. [all data]

Jarvis, Boyle, et al., 1998
Jarvis, G.K.; Boyle, K.J.; Mayhew, C.A.; Tuckett, R.P., Threshold Photoelectron-Photoion Coincidence Spectroscopy of Perfluorocarbons. 2. Unsaturated and Cyclic Perfluorocarbons C, J. Phys. Chem. A, 1998, 102, 19, 3230, https://doi.org/10.1021/jp971902y . [all data]

Brundle, Robin, et al., 1972
Brundle, C.R.; Robin, M.B.; Kuebler, N.A.; Basch, H., Perfluoro effect in photoelectron spectroscopy. I. Nonaromatic molecules, J. Am. Chem. Soc., 1972, 94, 1451. [all data]

Sell and Kuppermann, 1979
Sell, J.A.; Kuppermann, A., Variable angle photoelectron spectroscopy of the fluoroethylenes, J. Chem. Phys., 1979, 71, 4703. [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, 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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