Methane

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IR Spectrum

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Data compiled by: Coblentz Society, Inc.

Data compiled by: NIST Mass Spectrometry Data Center, William E. Wallace, director


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:   Td     Symmetry Number σ = 12


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

a1 1 Sym str 2917  A  ia 2917.0 gas
e 2 Deg deform 1534  A 1533 ia gas 1533.6 Observed through Coriolis interaction with ν4
f2 3 Deg str 3019  A 3018.9 gas 3019.5
f2 4 Deg deform 1306  C 1306.2 gas

Source: Shimanouchi, 1972

Notes

iaInactive
A0~1 cm-1 uncertainty
C3~6 cm-1 uncertainty

References

Go To: Top, IR Spectrum, 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

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