Band
Title
920.0 cm-1: ν69 of C4H2 in C4H2 - phase I
Type
absorption
Assignments summary
Assignment Symmetry Mode Specie(s) Molecule/Atom Bond Multiplicity Degeneracy Contribution Resonance
ν69 combination vibration C4H2 C4H2 -C ≡ C-H
-C≡ 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)
920 ± 1 - - symmetric 0.019 s 10.0
920 ± 1 - - symmetric 0.017 s 95.0
Label
ν69
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
ν9 (bending out-p)       Bond: -C≡ C-C≡
Texture
film

Temperature

Temperature
10.0 ± 1.0 K
Comments
annealed to 70-110K
Method #1
spectrum measurement
Overlap
isolated
Peak
920 ± 1 cm-1 (peak)
Evaluation
validated
Quality
B
Shape
symmetric
Evaluation
undefined
Quality
undefined
Method
baseline corrected peak intensity
Relative intensity
0.019 ± 0.003
Strength
strong (s)
Evaluation
undefined
Quality
D
Texture
film

Temperature

Temperature
95.0 ± 1.0 K
Comments
annealed to 70-110K
Method #1
spectrum measurement
Overlap
isolated
Peak
920 ± 1 cm-1 (peak)
Evaluation
validated
Quality
B
Shape
symmetric
Evaluation
undefined
Quality
undefined
Method
extrapolated
Relative intensity
0.017 ± 0.003
Strength
strong (s)
Evaluation
undefined
Quality
D
Comments
extrapolated from 10K