- Type
- absorption
- Assignments summary
- Characteristics summary
| Assignment | Symmetry | Mode | Specie(s) | Molecule/Atom | Bond | Multiplicity | Degeneracy | Contribution | Resonance |
|---|---|---|---|---|---|---|---|---|---|
| νR | hindered rotation | 12CH4 | CH4 | mode degeneracy | other | unknown |
| Peak position (cm-1) |
Center position (cm-1) |
Width (cm-1) |
Shape | Asymmetry factor | Peak intensity (cm-1) |
Peak intensity relative | Peak strength | Integrated intensity (cm-2) |
Integrated intensity relative | Integrated strength | Temperature (K) |
Pressure (bar) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 160 ± 10 | - | 130 ± 15 | asymmetric | 1 ± 0.1 | 1.25e-04 | vw | w | 77.0 |
- Label
- νR
- Category
- rotation
Evaluation
- Level
- partly assigned
- Evaluation
- undefined
- Comments
- unresolved rotational modes
- Contribution level
- unknown
- Contribution comments
- blended rotational structure
| # | Multiplicity type | Degeneracy | Other band |
|---|---|---|---|
| 1 | mode degeneracy | other |
- Primary specie
- 12CH4
- Label (type)
- νR (hindered rotation)
Rotation modes
- Texture
- crystal
- Temperature
- 77.0 ± 1.0 K
- Formation temperature
- 90.7 K
- Temperature max
- 90.7 K
Temperature
- Method #1
- spectrum measurement
- Method #2
- spectrum measurement
- Overlap
- isolated
- Peak
- 160 ± 10 cm-1 (peak)
- Evaluation
- validated
- Quality
- D
- Comments
- possible shoulder around 115 cm-1
- FWHM
- 130 ± 15 cm-1 (hwhm)
- Shape
- asymmetric
- Evaluation
- undefined
- Quality
- E
- Comments
- very broad
- Method
- peak intensity
- Absorption coefficient
- 1 ± 0.1 cm-1
- Relative intensity
- 1.25e-04 ± 1.25e-05
- Strength
- very weak (vw)
- Evaluation
- undefined
- Quality
- D
- Comments
- from figure of Savoie and Fournier (1970)
- Method
- extrapolated
- Strength
- weak (w)