Band
Title
2905.0 cm-1: ν1 of 12CH4 in CH4 - phase I
Type
Raman scattering
Assignments summary
Assignment Symmetry Mode Specie(s) Molecule/Atom Bond Multiplicity Degeneracy Contribution Resonance
ν1 stretching sym. 12CH4 CH4 12C-1H no
Characteristics summary
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)
2905 ± 2 - 4 ± 0.5 symmetric vs s 77.0
Label
ν1
Category
fundamental vibration

Evaluation

Level
fully assigned
Evaluation
validated
# Multiplicity type Degeneracy Other band
1 no

Vibration modes

Label (type)
ν1 (stretching sym.)       Bond: 12C-1H
Texture
crystal

Temperature

Temperature
77.0 ± 1.0 K
Formation temperature
90.7 K
Temperature max
90.7 K
Sample orientation mode
unoriented
Polarization orientation mode
depolarized
Comments
Hg lines
Method #1
spectrum measurement
Method #2
spectrum measurement
Overlap
isolated
Peak
2905 ± 2 cm-1 (peak)
Evaluation
validated
Quality
B
FWHM
4 ± 0.5 cm-1 (fwhm)
Shape
symmetric
Evaluation
validated
Quality
B
Method
extrapolated
Strength
very strong (vs)
Evaluation
validated
Quality
undefined
Method
extrapolated
Strength
strong (s)
Quality
undefined