Band
Title
1409.0 cm-1: ν2+νL of NH3 in natural NH3 - phase I
Band type
Type
absorption
Assignments summary
Assignment Symmetry Mode Specie(s) Molecule/Atom Bond Multiplicity Degeneracy Contribution Resonance
ν2+νL combination NH3 NH3 NH3 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)
1409 ± 2 - 55 ± 5 asymmetric high frequency wing 250 ± 50 0.0052 s m 90.0
Band assignment #1
Assignment
Label
ν2+νL
Category
combination

Evaluation

Level
fully assigned
Evaluation
validated
# Multiplicity type Degeneracy Other band
1 no
Primary specie
NH3

Vibration modes

Label (type)
ν2 (deformation sym.)       Bond: NH3

Rotation modes

Label (type)
νL (libration)
Texture
film

Temperature

Temperature
90.0 ± 15.0 K
Method #1
spectrum measurement
Overlap
strongly blended
Peak
1409 ± 2 cm-1 (peak)
Evaluation
validated
Quality
B
FWHM
55 ± 5 cm-1 (fwhm)
Shape
asymmetric high frequency wing
Evaluation
undefined
Quality
E
Comments
with a broad shoulder around 1430 cm-1
Method
baseline corrected peak intensity
Absorption coefficient
250 ± 50 cm-1
Relative intensity
0.0052 ± 0.001
Strength
strong (s)
Evaluation
undefined
Quality
D
Method
estimated
Strength
medium (m)
Evaluation
undefined
Publications