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Acetaldehyde

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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 CH3 d-str 3005  C 3005 M gas 3001 W liq.
a' 2 CH3 s-str 2917  D 2917 S p liq.
a' 3 CH str 2822  C 2822 M gas 2843 W p liq.
a' 4 CO str 1743  C 1743 VS gas 1714 S p liq.
a' 5 CH3 d-deform 1441  C 1441 S gas 1426 S liq.
a' 6 CH bend 1400  C 1400 S gas 1391 S liq.
a' 7 CH3 s-deform 1352  C 1352 S gas 1342 M liq.
a' 8 CC str 1113  C 1113 S gas 1109 M p liq.
a' 9 CH3 rock 919  C 919 M gas 911 M liq.
a' 10 CCO deform 509  C 509 S gas 512 S p liq.
a 11 CH3 d-str 2967  C 2967 M gas 2964 W liq.
a 12 CH3 d-deform 1420  C 1420 S gas 1426 S dp liq.
a 13 CH3 rock 867  C 867 M gas 885 M liq.
a 14 CH bend 763  C 763 W gas 767 M dp liq.
a 15 Torsion 150  C 150 W gas MW: «nu»150 ()A), «nu»148 ()E)

Source: Shimanouchi, 1972

Notes

VSVery strong
SStrong
MMedium
WWeak
pPolarized
dpDepolarized
MWTorsional Frequency calculated from microwave spectroscopic data.
C3~6 cm-1 uncertainty
D6~15 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