Band
Title
3864.0 cm-1: ν3+ν4 of C2H2 in C2H2 - phase II
Band type
Type
absorption
Assignments summary
Assignment Symmetry Mode Specie(s) Molecule/Atom Bond Multiplicity Degeneracy Contribution Resonance
ν3+ν4 unknown combination vibration C2H2 C2H2 ≥ C-H unknown
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)
3864 ± 1 - - undefined 115 ± 5 0.00147 m 20.0
3864 ± 1 - - undefined 155 ± 7 0.002 m 65.0
Band assignment #1
Assignment
Label
ν3+ν4
Symmetry
unknown
Category
combination vibration

Evaluation

Level
partly assigned
Evaluation
uncertain
Comments
Bottger & Eggers 1964
# Multiplicity type Degeneracy Other band
1 unknown
Primary specie
C2H2

Vibration modes

Label (type)
ν3 (stretching asym.)       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
3864 ± 1 cm-1 (peak)
Evaluation
validated
Quality
B
Shape
undefined
Evaluation
undefined
Quality
undefined
Method
baseline corrected peak intensity
Absorption coefficient
115 ± 5 cm-1
Relative intensity
0.00147 ± 7.0e-05
Strength
medium (m)
Evaluation
undefined
Quality
B
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
strongly blended
Peak
3864 ± 1 cm-1 (peak)
Evaluation
validated
Quality
B
Shape
undefined
Evaluation
undefined
Quality
undefined
Method
baseline corrected peak intensity
Absorption coefficient
155 ± 7 cm-1
Relative intensity
0.002 ± 1.0e-04
Strength
medium (m)
Evaluation
undefined
Quality
B
Method
width x peak intensity
Evaluation
validated
Quality
undefined
Publications