Band
Title
1292.0 cm-1: ν68 of C4H2 in C4H2 - phase I
Type
absorption
Assignments summary
Assignment Symmetry Mode Specie(s) Molecule/Atom Bond Multiplicity Degeneracy Contribution Resonance
ν68 combination vibration C4H2 C4H2 -C ≡ C-H
-C ≡ 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)
1294 ± 1 - - asymmetric high frequency wing 0.18 vs 10.0
1292 ± 1 - - asymmetric high frequency wing 0.17 vs 95.0
Label
ν68
Category
combination vibration

Evaluation

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

Vibration modes

Label (type)
ν6 (bending sym.)       Bond: -C ≡ C-H
ν8 (bending out-p)       Bond: -C ≡ C-H
Texture
film

Temperature

Temperature
10.0 ± 1.0 K
Comments
annealed to 70-110K
Method #1
spectrum measurement
Overlap
isolated
Peak
1294 ± 1 cm-1 (peak)
Evaluation
validated
Quality
B
Comments
with weak broad shoulder near 1330 cm-3
Shape
asymmetric high frequency wing
Evaluation
undefined
Quality
undefined
Method
baseline corrected peak intensity
Relative intensity
0.18 ± 0.003
Strength
very strong (vs)
Evaluation
undefined
Quality
A
Texture
film

Temperature

Temperature
95.0 ± 1.0 K
Comments
annealed to 70-110K
Method #1
spectrum measurement
Overlap
isolated
Peak
1292 ± 1 cm-1 (peak)
Evaluation
validated
Quality
B
Comments
with weak broad shoulder near 1330 cm-4
Shape
asymmetric high frequency wing
Evaluation
undefined
Quality
undefined
Method
baseline corrected peak intensity
Relative intensity
0.17 ± 0.003
Strength
very strong (vs)
Evaluation
undefined
Quality
A