Band
Title
4317.0 cm-1: 2ν1 + νL,T of 12C16O in natural CO - phase alpha
Type
absorption
Assignments summary
Assignment Symmetry Mode Specie(s) Molecule/Atom Bond Multiplicity Degeneracy Contribution Resonance
1 + νL,T combination 12C16O CO 12C⁻≡ 16O⁺ 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)
4317 ± 3 44 ± 1.5 other 3.1 ± 0.1 3.6e-05 w 135 ± 10 0.00055 vw 21.0
Label
1 + νL,T
Category
combination
Method
comparison with phonon modes

Evaluation

Level
partly assigned
Evaluation
undefined
Comments
full bands of combination of phonons with 2ν1
# Multiplicity type Degeneracy Other band
1 no

Vibration modes

Label (type)
1 (stretching)       Bond: 12C⁻≡ 16O⁺

Rotation modes

Label (type)
νL (libration)

Phonon modes

Label (type)
νT (translation)
Comments
all types of phonons

Temperature

Temperature
21.0 ± 1.0 K
Formation temperature
21.0 K
Temperature max
21.0 K
Method #1
spectrum measurement
Overlap
strongly blended
Center
4317 ± 3 cm-1 (half-max center)
Evaluation
validated
Quality
C
Comments
position sensitive to the formation conditions of alpha-CO
FWHM
44 ± 1.5 cm-1 (fwhm)
Shape
other
Evaluation
validated
Quality
C
Comments
complex shape with 2 maxima and a shoulder on each side
Method
peak intensity
Absorption coefficient
3.1 ± 0.1 cm-1
Relative intensity
3.6e-05 ± 1.0e-06
Strength
weak (w)
Evaluation
validated
Quality
B
Method
width x peak intensity
Absorption coefficient
135 ± 10 cm-2
Relative intensity
0.00055 ± 4e-05
Strength
very weak (vw)
Evaluation
undefined
Quality
C