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Ammonia

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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:   C3nu     Symmetry Number sigma = 3


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

a1 1 Sym str 3337  A 3336.2 symmetric level
a1 1 Sym str 3337  A 3337.2 antisymmetric level
a1 2 Sym deform 950  C 932.5 symmetric level
a1 2 Sym deform 950  C 968.3 antisymmetric level
e 3 Deg str 3444  A 3443.6 symmetric level
e 3 Deg str 3444  A 3443.9 antisymmetric level
e 4 Deg deform 1627  A 1626.1 symmetric level
e 4 Deg deform 1627  A 1627.4 antisymmetric level

Source: Shimanouchi, 1972

Notes

A0~1 cm-1 uncertainty
C3~6 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