Band
Title
2910.5 cm-1: ν9 of 12C1H316O1H and 2ν4 of 12C1H316O1H in natural CH3OH - phase alpha
Type
absorption
Assignments summary
Assignment Symmetry Mode Specie(s) Molecule/Atom Bond Multiplicity Degeneracy Contribution Resonance
ν9 A" stretching asym. 12CH316OH CH3OH 12C-1H no Fermi resonance
4 A' bending asym. 12CH316OH CH3OH -12C ≤ H3 no Fermi resonance
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)
2910.5 ± 0.3 - 12 ± 3 shoulder 0.03 s 35.0
2907 ± 1.5 - - symmetric 0.013 m 120.0
Label
ν9
Symmetry
A"
Category
fundamental vibration
Method
comparison with gas phase

Evaluation

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

Vibration modes

Label (type)
ν9 (stretching asym.)       Bond: 12C-1H

Resonance #1

Type
Fermi resonance
Band
4 (2910.5 cm-1) of 12CH316OH
Comments
with 2ν4 CH3 overtone asym. bending
Label
4
Symmetry
A'
Category
overtone vibration

Evaluation

Level
uncertain assignment
Evaluation
undefined
# Multiplicity type Degeneracy Other band
1 no

Vibration modes

Label (type)
4 (bending asym.)       Bond: -12C ≤ H3

Resonance #1

Type
Fermi resonance
Band
ν9 (2910.5 cm-1) of 12CH316OH
Comments
with ν9 CH3 asym. strtching

Temperature

Temperature
35.0 ± 5.0 K
Method #1
spectrum measurement: direct measurement on the absorbance spectrum, manual linear baseline for peak intensity and FWHM
Overlap
shoulder-tail
Peak
2910.5 ± 0.3 cm-1 (peak)
Evaluation
validated
Quality
A
FWHM
12 ± 3 cm-1 (fwhm)
Shape
shoulder
Evaluation
validated
Quality
D
Method
peak intensity
Relative intensity
0.03 ± 0.01
Strength
strong (s)
Evaluation
undefined
Quality
E

Temperature

Temperature
120.0 ± 10.0 K
Method #1
spectrum measurement: direct measurement on the absorbance spectrum, manual linear baseline for peak intensity and FWHM
Overlap
isolated
Peak
2907 ± 1.5 cm-1 (peak)
Evaluation
validated
Quality
B
Shape
symmetric
Evaluation
validated
Method
peak intensity
Relative intensity
0.013 ± 0.005
Strength
medium (m)
Evaluation
undefined
Quality
E