Band
Title
180.0 cm-1: νTxy (F) of NH3 in natural NH3 - phase I
Type
absorption
Assignments summary
Assignment Symmetry Mode Specie(s) Molecule/Atom Bond Multiplicity Degeneracy Contribution Resonance
νTxy (F) F translation 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)
183 ± 1 - 8 ± 2 asymmetric m 20.0
180 ± 1 - 14 ± 1 asymmetric 190 ± 60 0.004 m w 90.0
Label
νTxy (F)
Symmetry
F
Category
phonon mode
Method
Rhigini et al. 1978

Evaluation

Level
partly assigned
Evaluation
validated
# Multiplicity type Degeneracy Other band
1 no

Phonon modes

Label (type)
νTxy (translation)
Comments
F
Texture
film

Temperature

Temperature
20.0 ± 10.0 K
Method #1
spectrum measurement
Overlap
isolated
Peak
183 ± 1 cm-1 (peak)
Evaluation
validated
Quality
B
FWHM
8 ± 2 cm-1 (extrapolated)
Shape
asymmetric
Evaluation
undefined
Quality
D
Method
estimated
Strength
medium (m)
Evaluation
undefined
Texture
film

Temperature

Temperature
90.0 ± 15.0 K
Method #1
spectrum measurement
Overlap
isolated
Peak
180 ± 1 cm-1 (peak)
Evaluation
validated
Quality
B
FWHM
14 ± 1 cm-1 (fwhm)
Shape
asymmetric
Evaluation
undefined
Quality
C
Method
peak intensity
Absorption coefficient
190 ± 60 cm-1
Relative intensity
0.004 ± 0.001
Strength
medium (m)
Evaluation
validated
Quality
E
Method
estimated
Strength
weak (w)
Evaluation
undefined