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Ethene, tetrafluoro-

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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: Takehiko Shimanouchi

Symmetry:   D2h     Symmetry Number sigma = 4


 Sym.   No   Approximate   Selected Freq.  Infrared   Raman   Comments 
 Species   type of mode   Value   Rating   Value  Phase  Value  Phase

ag 1 CC str 1872  C  ia 1872 M p gas
ag 2 CF2 s-str 778  C  ia 777.9 S p gas
ag 3 CF2 scis 394  C  ia 394 W p gas
au 4 CF2 twist 190  E  ia  ia CF
b1g 5 CF2 a-str 1340  D  ia 1340 VW gas
b1g 6 CF2 rock 551  D  ia 551 M liq.
b1u 7 CF2 wag 406  C 406 S gas  ia
b2g 8 CF2 wag 508  D  ia 508 S liq.
b2u 9 CF2 a-str 1337  C 1337 S gas  ia
b2u 10 CF2 rock 218  C 218 S gas  ia
b3u 11 CF2 s-str 1186  C 1186 S gas  ia
b3u 12 CF2 scis 558  C 558 S gas  ia

Source: Shimanouchi, 1972

Notes

SStrong
MMedium
WWeak
VWVery weak
iaInactive
pPolarized
CFCalculated frequency
C3~6 cm-1 uncertainty
D6~15 cm-1 uncertainty
E15~30 cm-1 uncertainty

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.

Shimanouchi, 1972
Shimanouchi, T., Tables of Molecular Vibrational Frequencies Consolidated Volume I, National Bureau of Standards, 1972, 1-160. [all data]


Notes

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