Band
Title
3278.0 cm-1: ν4 of C4H2 in C4H2 - phase I
Band type
Type
absorption
Assignments summary
Assignment Symmetry Mode Specie(s) Molecule/Atom Bond Multiplicity Degeneracy Contribution Resonance
ν4 unknown 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)
3277 ± 1 - - undefined 1 vs 10.0
3278 ± 1 - - undefined 1 vs 95.0
Band assignment #1
Assignment
Label
ν4
Symmetry
unknown
Category
fundamental vibration

Evaluation

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

Vibration modes

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

Temperature

Temperature
10.0 ± 1.0 K
Comments
annealed to 70-110K
Method #1
spectrum measurement
Overlap
strongly blended
Peak
3277 ± 1 cm-1 (peak)
Evaluation
validated
Quality
B
Shape
undefined
Evaluation
undefined
Quality
undefined
Method
baseline corrected peak intensity
Relative intensity
1 ± 0.03
Strength
very strong (vs)
Evaluation
undefined
Quality
B
Texture
film

Temperature

Temperature
95.0 ± 1.0 K
Comments
annealed to 70-110K
Method #1
spectrum measurement
Overlap
strongly blended
Peak
3278 ± 1 cm-1 (peak)
Evaluation
validated
Quality
B
Shape
undefined
Evaluation
undefined
Quality
undefined
Method
baseline corrected peak intensity
Relative intensity
1 ± 0.03
Strength
very strong (vs)
Evaluation
undefined
Quality
B
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