Band
Title
4656.0 cm-1: [ν1 + ν1] of 14N2 and 2ν1 + νL of 14N2 in natural N2 - phase alpha
Band type
Type
absorption
Assignments summary
Assignment Symmetry Mode Specie(s) Molecule/Atom Bond Multiplicity Degeneracy Contribution Resonance
[ν1 + ν1] other 14N2 N2 14N≡ 14N no major
2ν1 + νL combination 14N2 N2 14N≡ 14N no minor
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)
4656 ± 0.5 1.25 ± 0.2 gaussian 0.3 ± 0.05 0.65 w 0.41 ± 0.01 vvw 20.0
Band assignment #1
Assignment
Label
[ν1 + ν1]
Category
other
Method
comparison with fundamental band

Evaluation

Level
fully assigned
Evaluation
validated
Comments
double phonon transition
# Multiplicity type Degeneracy Other band
1 no
Contribution level
major
Primary specie
14N2

Vibration modes

Label (type)
ν1 (stretching)       Bond: 14N≡ 14N
Label
2ν1 + νL
Category
combination

Evaluation

Level
fully assigned
Evaluation
undefined
# Multiplicity type Degeneracy Other band
1 no
Contribution level
minor
Contribution comments
hidden in the ν1 + ν1 mode
Primary specie
14N2

Vibration modes

Label (type)
2ν1 (stretching)       Bond: 14N≡ 14N

Rotation modes

Label (type)
νL (libration)
Comments
Tg⁻

Temperature

Temperature
20.0 ± 5.0 K
Formation temperature
35.6 K
Temperature max
35.6 K
Method #1
spectrum fit
Fit function
Gaussian
Overlap
slightly blended
Center
4656 ± 0.5 cm-1 (half-max center)
Evaluation
validated
Quality
A
FWHM
1.25 ± 0.2 cm-1 (fwhm)
Shape
gaussian
Evaluation
validated
Quality
A
Method
fit intensity
Absorption coefficient
0.3 ± 0.05 cm-1
Relative intensity
0.65 ± 0.1
Strength
weak (w)
Evaluation
validated
Quality
D
Method
fit integrated intensity
Absorption coefficient
0.41 ± 0.01 cm-2
Strength
very very weak (vvw)
Evaluation
validated
Quality
B
Publications
Data publication experiment