Band
Title
1429.0 cm-1: ν3 (Eg) of (CO3)2- in Siderite
Type
Raman scattering
Assignments summary
Assignment Symmetry Mode Specie(s) Molecule/Atom Bond Multiplicity Degeneracy Contribution Resonance
ν3 (Eg) Eg stretching asym. (CO3)2- ……C…O-2/3 mode degeneracy double full
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)
1429 ± 1 - 65 ± 2 symmetric 0.0033 vvw 0.025 w 295.0 1
Label
ν3 (Eg)
Symmetry
Eg
Category
fundamental vibration

Evaluation

Level
fully assigned
Evaluation
validated
# Multiplicity type Degeneracy Other band
1 mode degeneracy double
Contribution level
full

Vibration modes

Label (type)
ν3 (stretching asym.)       Bond: ……C…O-2/3
Comments
C-O antisymmetric stretch
Composition
Fe>0.95, Mg<0.05, Mn<0.04
Texture
crystal in plot

Temperature

Temperature
295.0 ± 5.0 K

Pressure

Pressure
1 bar
Laser wavelength
532.0 nm
Sample orientation mode
unoriented
Method #1
spectrum fit
Fit function
Gaussian
Overlap
isolated
Peak
1429 ± 1 cm-1 (fit peak)
Evaluation
validated
Quality
B
Comments
increases with Mg fraction
FWHM
65 ± 2 cm-1 (fit fwhm)
Shape
symmetric
Evaluation
validated
Quality
D
Comments
decreases with Mg fraction
Method
baseline corrected peak intensity
Relative intensity
0.0033 ± 7.0e-04
Strength
very very weak (vvw)
Evaluation
validated
Quality
D
Comments
decreases with Mg fraction
Method
width x peak intensity
Relative intensity
0.025 ± 0.005
Strength
weak (w)
Evaluation
recommended
Quality
D