Band
Title
6443.0 cm-1: 2ν4 of C4H2 in C4H2 - phase I
Band type
Type
absorption
Assignments summary
Assignment Symmetry Mode Specie(s) Molecule/Atom Bond Multiplicity Degeneracy Contribution Resonance
2ν4 stretching asym. C4H2 C4H2 ≡ 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)
6439 ± 5 - - undefined 0.0125 s 10.0
6443 ± 5 - - undefined 0.012 s 95.0
Band assignment #1
Assignment
Label
2ν4
Category
overtone vibration

Evaluation

Level
partly assigned
Evaluation
undefined
# Multiplicity type Degeneracy Other band
1 no
Primary specie
C4H2

Vibration modes

Label (type)
2ν4 (stretching asym.)       Bond: ≡ C-H
Texture
film

Temperature

Temperature
10.0 ± 1.0 K
Comments
annealed to 70-110K
Method #1
spectrum measurement
Overlap
unknown
Peak
6439 ± 5 cm-1 (peak)
Evaluation
uncertain
Quality
C
Shape
undefined
Evaluation
undefined
Quality
undefined
Method
baseline corrected peak intensity
Relative intensity
0.0125 ± 0.006
Strength
strong (s)
Evaluation
undefined
Quality
E
Texture
film

Temperature

Temperature
95.0 ± 1.0 K
Comments
annealed to 70-110K
Method #1
spectrum measurement
Overlap
unknown
Peak
6443 ± 5 cm-1 (peak)
Evaluation
uncertain
Quality
C
Shape
undefined
Evaluation
undefined
Quality
undefined
Method
extrapolated
Relative intensity
0.012 ± 0.006
Strength
strong (s)
Evaluation
undefined
Quality
E
Comments
extrapolated from 10K
Publications