Band
Title
3369.0 cm-1: ν3 of NH3 in natural NH3 - phase I
Type
absorption
Assignments summary
Assignment Symmetry Mode Specie(s) Molecule/Atom Bond Multiplicity Degeneracy Contribution Resonance
ν3 F stretching asym. NH3 NH3 >N-H mode degeneracy triple
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)
3365 ± 5 - - sharp shoulder vs 20.0
3369 ± 2 - 8.5 ± 1 sharp shoulder 18000 ± 2000 0.375 vs vs 90.0
Label
ν3
Symmetry
F
Category
fundamental vibration

Evaluation

Level
fully assigned
Evaluation
validated
# Multiplicity type Degeneracy Other band
1 mode degeneracy triple

Vibration modes

Label (type)
ν3 (stretching asym.)       Bond: >N-H
Comments
F
Texture
film

Temperature

Temperature
20.0 ± 10.0 K
Method #1
spectrum measurement
Overlap
shoulder-tail
Peak
3365 ± 5 cm-1 (peak)
Evaluation
validated
Quality
C
Shape
sharp shoulder
Evaluation
undefined
Method
estimated
Strength
very strong (vs)
Evaluation
undefined
Texture
film

Temperature

Temperature
90.0 ± 15.0 K
Method #1
spectrum measurement
Overlap
shoulder-tail
Peak
3369 ± 2 cm-1 (peak)
Evaluation
validated
Quality
B
FWHM
8.5 ± 1 cm-1 (hwhm)
Shape
sharp shoulder
Evaluation
undefined
Quality
C
Method
baseline corrected peak intensity
Absorption coefficient
18000 ± 2000 cm-1
Relative intensity
0.375 ± 0.04
Strength
very strong (vs)
Evaluation
undefined
Quality
D
Method
estimated
Strength
very strong (vs)
Evaluation
undefined