Home Symbol which looks like a small house Up Solid circle with an upward pointer in it

1,4-C6H4F2+


Vibrational and/or electronic energy levels

Go To: Top, 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:   E


 Energy 
 (cm-1
 Med.   Transition   «lambda»min 
 (nm) 
 «lambda»max 
 (nm) 
 References

Tx = 41600 ± 1000 gas Bieri, Asbrink, et al., 1981

State:   D


 Energy 
 (cm-1
 Med.   Transition   «lambda»min 
 (nm) 
 «lambda»max 
 (nm) 
 References

Tx = 36800 ± 1000 gas Bieri, Asbrink, et al., 1981

State:   C


 Energy 
 (cm-1
 Med.   Transition   «lambda»min 
 (nm) 
 «lambda»max 
 (nm) 
 References

Tx = 27100 ± 1000 gas Bieri, Asbrink, et al., 1981

State:   B


 Energy 
 (cm-1
 Med.   Transition   «lambda»min 
 (nm) 
 «lambda»max 
 (nm) 
 References

To = 23754 gas B-X 390 425 Bieri, Asbrink, et al., 1981
Tsuchiya, Fujii, et al., 1989
Tsuchiya, Fujii, et al., 1990
To = 23200 Ne Bondybey, Miller, et al., 1980
Ar B-X 395 425 Lurito and Andrews, 1985


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

ag 1450 ± 40 gas PE Bieri, Asbrink, et al., 1981
404 ± 10 gas ID Tsuchiya, Fujii, et al., 1990
400 T Ne AB Bondybey, Miller, et al., 1980
400 Ar AB Lurito and Andrews, 1985
au 8 200 H gas ID Tsuchiya, Fujii, et al., 1990
b3u 30 144 H gas ID Tsuchiya, Fujii, et al., 1989
Tsuchiya, Fujii, et al., 1990

State:   A


 Energy 
 (cm-1
 Med.   Transition   «lambda»min 
 (nm) 
 «lambda»max 
 (nm) 
 References

To = 7180 ± 160 gas Bieri, Asbrink, et al., 1981


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

ag 1355 ± 40 gas PE Bieri, Asbrink, et al., 1981

State:   X


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

ag 1 3094 gas TPE TPI Reiser, Rieger, et al., 1993
Kwon, Kim, et al., 2003
2 1640 gas TPE TPI Rieger, Reiser, et al., 1992
Reiser, Rieger, et al., 1993
Kwon, Kim, et al., 2003
3 1379 gas TPE TPI Rieger, Reiser, et al., 1992
Reiser, Rieger, et al., 1993
Kwon, Kim, et al., 2003
4 1152 gas TPE TPI Rieger, Reiser, et al., 1992
Reiser, Rieger, et al., 1993
Kwon, Kim, et al., 2003
5 839 gas TPE TPI Rieger, Reiser, et al., 1992
Reiser, Rieger, et al., 1993
Kwon, Kim, et al., 2003
6 441 gas TPE TPI Tsuchiya, Fujii, et al., 1990
Rieger, Reiser, et al., 1992
Reiser, Rieger, et al., 1993
Kwon, Kim, et al., 2003
au 7 1015 gas TPI Kwon, Kim, et al., 2003
8 358 gas TPE TPI Tsuchiya, Fujii, et al., 1990
Rieger, Reiser, et al., 1992
Reiser, Rieger, et al., 1993
Kwon, Kim, et al., 2003
b1g 9 726 gas TPE Reiser, Rieger, et al., 1993
b1u 10 3015 gas TPI Kwon, Kim, et al., 2003
13 983 gas TPI Kwon, Kim, et al., 2003
14 740 T gas TPI Kwon, Kim, et al., 2003
b2g 15 1015 T gas TPI Kwon, Kim, et al., 2003
17 302 gas TPE TPI Rieger, Reiser, et al., 1992
Reiser, Rieger, et al., 1993
Kwon, Kim, et al., 2003
b2u 19 1526 gas TPI Kwon, Kim, et al., 2003
20 1351 gas TPI Kwon, Kim, et al., 2003
21 1113 gas TPI Kwon, Kim, et al., 2003
22 368 T gas TPI Kwon, Kim, et al., 2003
b3g 23 3054 gas TPI Kwon, Kim, et al., 2003
24 1459 gas TPI Kwon, Kim, et al., 2003
25 1278 T gas TPI Kwon, Kim, et al., 2003
26 583 gas TPI Kwon, Kim, et al., 2003
27 430 gas TPE Reiser, Rieger, et al., 1993
b3u 28 859 T gas TPE Reiser, Rieger, et al., 1993
29 515 gas PE TPI Sekreta, Viswanathan, et al., 1989
Kwon, Kim, et al., 2003
30 126 gas TPE TPI Tsuchiya, Fujii, et al., 1989
Rieger, Reiser, et al., 1992
Reiser, Rieger, et al., 1993
Kwon, Kim, et al., 2003

State:   ?


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

b2g 16 740 T gas TPI Kwon, Kim, et al., 2003

Additional references: Jacox, 1994, page 430; Jacox, 1998, page 369

Notes

H(1/2)(2nu)
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.

Bieri, Asbrink, et al., 1981
Bieri, G.; Asbrink, L.; Von Niessen, W., 30.4 nm He(II) photoelectron spectra of organic molecules. Part IV. Fluoro-compounds (C,H,F), J. Electron Spectrosc. Relat. Phenom., 1981, 23, 281. [all data]

Tsuchiya, Fujii, et al., 1989
Tsuchiya, Y.; Fujii, M.; Ito, M., Electronic spectra of isolated cations in supersonic jets by mass-selected ion-dip spectroscopy. Cations of benzene, p-difluorobenzene, and 1,3,5-trifluorobenzene, J. Chem. Phys., 1989, 90, 12, 6965, https://doi.org/10.1063/1.456272 . [all data]

Tsuchiya, Fujii, et al., 1990
Tsuchiya, Y.; Fujii, M.; Ito, M., Electronic spectra of p-difluorobenzene cation by mass-selected ion dip spectroscopy in a supersonic jet, Chem. Phys. Lett., 1990, 168, 2, 173, https://doi.org/10.1016/0009-2614(90)85125-V . [all data]

Bondybey, Miller, et al., 1980
Bondybey, V.E.; Miller, T.A.; English, J.H., Electronic absorption spectra of molecular cations, J. Chem. Phys., 1980, 72, 3, 2193, https://doi.org/10.1063/1.439316 . [all data]

Lurito and Andrews, 1985
Lurito, J.T.; Andrews, L., Vibronic absorption spectra of fluorobenzene and difluorobenzene radical cations in solid argon, Chem. Phys., 1985, 97, 1, 121, https://doi.org/10.1016/0301-0104(85)87084-1 . [all data]

Reiser, Rieger, et al., 1993
Reiser, G.; Rieger, D.; Wright, T.G.; Muller-Dethlefs, K.; Schlag, E.W., Zero-kinetic-energy (ZEKE) photoelectron spectroscopy of p-difluorobenzene via different intermediate vibrational levels in the S1 state, J. Phys. Chem., 1993, 97, 17, 4335, https://doi.org/10.1021/j100119a015 . [all data]

Kwon, Kim, et al., 2003
Kwon, C.H.; Kim, H.L.; Kim, M.S., Vacuum ultraviolet mass-analyzed threshold ionization spectroscopy of p-, m-, and o-difluorobenzenes. Ionization energies and vibrational frequencies and structures of the cations, J. Chem. Phys., 2003, 118, 14, 6327, https://doi.org/10.1063/1.1557931 . [all data]

Rieger, Reiser, et al., 1992
Rieger, D.; Reiser, G.; Muller-Dethlefs, K.; Schlag, E.W., Zero kinetic energy photoelectron spectroscopy of p-difluorobenzene, J. Phys. Chem., 1992, 96, 12. [all data]

Sekreta, Viswanathan, et al., 1989
Sekreta, E.; Viswanathan, K.S.; Reilly, J.P., The laser photoelectron spectrum of gas phase p-difluorobenzene, J. Chem. Phys., 1989, 90, 10, 5349, https://doi.org/10.1063/1.456441 . [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]


Notes

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