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Formaldehyde

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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:   C2nu     Symmetry Number sigma = 2


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

a1 1 CH2 s-str 2783  A 2782.5 S gas 2781.6 S liq.
a1 2 CO str 1746  A 1746.1 VS gas 1742.3 W liq.
a1 3 CH2 scis 1500  A 1500.1 S gas 1499.7 M liq.
b1 4 CH2 a-str 2843  A 2843.1 VS gas 2866 W liq.
b1 5 CH2 rock 1249  A 1249.1 S gas
b2 6 CH2 wag 1167  A 1167.3 S gas

Source: Shimanouchi, 1972

Notes

VSVery strong
SStrong
MMedium
WWeak
A0~1 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