Band
Title
3293.0 cm-1: ν1+nuT (F) of NH3 and 2ν4 (F) of NH3 in natural NH3 - phase I
Type
absorption
Assignments summary
Assignment Symmetry Mode Specie(s) Molecule/Atom Bond Multiplicity Degeneracy Contribution Resonance
ν1+nuT (F) combination NH3 NH3 >N-H no
4 (F) deformation asym. 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)
3295 ± 5 - - unknown s 20.0
3293 ± 3 - 50 ± 10 asymmetric high frequency wing 1500 ± 500 0.031 s s 90.0
Label
ν1+nuT (F)
Category
combination

Evaluation

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

Vibration modes

Label (type)
ν1 (stretching sym.)       Bond: >N-H

Phonon modes

Label (type)
νT (translation)
Label
4 (F)
Category
overtone vibration

Evaluation

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

Vibration modes

Label (type)
4 (deformation asym.)       Bond: NH3
Texture
film

Temperature

Temperature
20.0 ± 10.0 K
Method #1
spectrum measurement
Overlap
moderately blended
Peak
3295 ± 5 cm-1 (peak)
Evaluation
validated
Quality
C
Shape
unknown
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
3293 ± 3 cm-1 (peak)
Evaluation
validated
Quality
C
FWHM
50 ± 10 cm-1 (fwhm)
Shape
asymmetric high frequency wing
Evaluation
undefined
Quality
E
Comments
with a broad shoulder around 3325 cm-1
Method
baseline corrected peak intensity
Absorption coefficient
1500 ± 500 cm-1
Relative intensity
0.031 ± 0.01
Strength
strong (s)
Evaluation
undefined
Quality
E
Method
estimated
Strength
strong (s)
Evaluation
undefined