Band
Title
2178.0 cm-1: ν2 of C4H2 in C4H2 - phase I
Band type
Type
absorption
Assignments summary
Assignment Symmetry Mode Specie(s) Molecule/Atom Bond Multiplicity Degeneracy Contribution Resonance
ν2 unknown stretching sym. C4H2 C4H2 -C≡ C- 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)
2178 ± 1 - - symmetric 0.0047 m 10.0
2178 ± 1 - - symmetric 0.0038 m 95.0
Band assignment #1
Assignment
Label
ν2
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)
ν2 (stretching sym.)       Bond: -C≡ C-
Texture
film

Temperature

Temperature
10.0 ± 1.0 K
Comments
annealed to 70-110K
Method #1
spectrum measurement
Overlap
isolated
Peak
2178 ± 1 cm-1 (peak)
Evaluation
validated
Quality
B
Shape
symmetric
Evaluation
undefined
Quality
undefined
Method
baseline corrected peak intensity
Relative intensity
0.0047 ± 0.0015
Strength
medium (m)
Evaluation
undefined
Quality
E
Texture
film

Temperature

Temperature
95.0 ± 1.0 K
Comments
annealed to 70-110K
Method #1
spectrum measurement
Overlap
isolated
Peak
2178 ± 1 cm-1 (peak)
Evaluation
validated
Quality
B
Shape
symmetric
Evaluation
undefined
Quality
undefined
Method
baseline corrected peak intensity
Relative intensity
0.0038 ± 0.0015
Strength
medium (m)
Evaluation
undefined
Quality
E
Publications