Band
Title
1893.0 cm-1: ν4+nuLz 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
ν4+nuLz 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)
1900 ± 5 - - asymmetric high frequency wing s 20.0
1893 ± 7 - 70 ± 5 asymmetric high frequency wing 290 ± 20 0.006 s m 90.0
Band assignment #1
Assignment
Label
ν4+nuLz
Category
combination

Evaluation

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

Vibration modes

Label (type)
ν4 (deformation asym.)       Bond: NH3

Rotation modes

Label (type)
νLz (libration)
Texture
film

Temperature

Temperature
20.0 ± 10.0 K
Method #1
spectrum measurement
Overlap
moderately blended
Peak
1900 ± 5 cm-1 (peak)
Evaluation
validated
Quality
C
Shape
asymmetric high frequency wing
Evaluation
undefined
Method
estimated
Strength
strong (s)
Evaluation
undefined
Texture
film

Temperature

Temperature
90.0 ± 15.0 K
Method #1
spectrum measurement
Overlap
moderately blended
Peak
1893 ± 7 cm-1 (peak)
Evaluation
validated
Quality
D
FWHM
70 ± 5 cm-1 (fwhm)
Shape
asymmetric high frequency wing
Evaluation
undefined
Quality
E
Comments
with a small shoulder around 1925 cm-1
Method
baseline corrected peak intensity
Absorption coefficient
290 ± 20 cm-1
Relative intensity
0.006 ± 4.0e-04
Strength
strong (s)
Evaluation
undefined
Quality
C
Method
estimated
Strength
medium (m)
Evaluation
undefined
Publications
Comments
nu2+nu5''