Band
Title
4075.5 cm-1: ν1+ν5 of C2H2 in C2H2 - Metastable phase
Band type
Type
absorption
Assignments summary
Assignment Symmetry Mode Specie(s) Molecule/Atom Bond Multiplicity Degeneracy Contribution Resonance
ν1+ν5 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)
4075.5 ± 1 - - asymmetric 0.0027 m 50.0
Band assignment #1
Assignment
Label
ν1+ν5
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)
ν1 (stretching sym.)       Bond: ≥ C-H
Texture
film

Temperature

Temperature
50.0 ± 5.0 K
Formation temperature
12.0 K
Temperature max
50.0 K
Method #1
spectrum measurement
Overlap
multiple
Peak
4075.5 ± 1 cm-1 (peak)
Evaluation
validated
Quality
B
Comments
possibly double band 4070, 4076 cm-1
Shape
asymmetric
Evaluation
undefined
Quality
undefined
Method
baseline corrected peak intensity
Relative intensity
0.0027 ± 1.0e-04
Strength
medium (m)
Evaluation
undefined
Quality
B
Method
width x peak intensity
Evaluation
validated
Quality
undefined
Publication