Band
Title
3351.0 cm-1: ν1 of C2H2 in C2H2 - phase II
Band type
Type
absorption
Assignments summary
Assignment Symmetry Mode Specie(s) Molecule/Atom Bond Multiplicity Degeneracy Contribution Resonance
ν1 unknown stretching sym. C2H2 C2H2 ≥ C-H 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)
3349 ± 1 - - asymmetric 17 ± 2 2.2e-04 w 20.0
3351 ± 2 - - broad shoulder 15 ± 2 1.9e-04 w 65.0
Band assignment #1
Assignment
Label
ν1
Symmetry
unknown
Category
fundamental vibration

Evaluation

Level
uncertain assignment
Evaluation
validated
Comments
Ag or B1g
# Multiplicity type Degeneracy Other band
1 no
Primary specie
C2H2

Vibration modes

Label (type)
ν1 (stretching sym.)       Bond: ≥ C-H
Texture
film

Temperature

Temperature
20.0 ± 10.0 K
Temperature max
70.0 K
Method #1
spectrum measurement
Overlap
strongly blended
Peak
3349 ± 1 cm-1 (peak)
Evaluation
validated
Quality
B
Shape
asymmetric
Evaluation
undefined
Quality
undefined
Method
baseline corrected peak intensity
Absorption coefficient
17 ± 2 cm-1
Relative intensity
2.2e-04 ± 3.0e-05
Strength
weak (w)
Evaluation
undefined
Quality
D
Method
width x peak intensity
Evaluation
validated
Quality
undefined
Texture
film

Temperature

Temperature
65.0 ± 10.0 K
Temperature max
70.0 K
Method #1
spectrum measurement
Overlap
shoulder-tail
Peak
3351 ± 2 cm-1 (peak)
Evaluation
validated
Quality
B
Shape
broad shoulder
Evaluation
undefined
Quality
undefined
Method
estimated
Absorption coefficient
15 ± 2 cm-1
Relative intensity
1.9e-04 ± 3.0e-05
Strength
weak (w)
Evaluation
undefined
Quality
D
Method
width x peak intensity
Evaluation
validated
Quality
undefined
Publication