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Acetic acid

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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:   Cs     Symmetry Number sigma = 1


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

a' 1 OH str 3583  B 3583 M gas
a' 2 CH3 d-str 3051  B 3051 VW gas
a' 3 CH3 s-str 2944  B 2944 VW gas
a' 4 C=O str 1788  B 1788 VS gas
a' 5 CH3 d-deform 1430  C 1430 sh gas SF(«nu»14)
a' 6 CH3 s-deform 1382  B 1382 M gas
a' 7 OH bend 1264  B 1264 M gas
a' 8 C-O str 1182  B 1182 S gas
a' 9 CH3 rock 989  B 989 M gas
a' 10 CC str 847  B 847 W gas
a' 11 OCO deform 657  B 657 S gas
a' 12 CCO deform 581  B 581 M gas
a 13 CH3 d-str 2996  B 2996 VW gas
a 14 CH3 d-deform 1430  C 1430 sh gas SF(«nu»5)
a 15 CH3 rock 1048  B 1048 W gas
a 16 C=O op-bend 642  B 642 S gas
a 17 C-O torsion 534  B 534 M gas
a 18 CH3 torsion 93  E CF

Source: Shimanouchi, 1972

Notes

VSVery strong
SStrong
MMedium
WWeak
VWVery weak
shShoulder
CFCalculated frequency
SFCalculation shows that the frequency approximately equals that of the vibration indicated in the parentheses.
B1~3 cm-1 uncertainty
C3~6 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