Band
Title
738.0 cm-1: ν4 (Eg) of (CO3)2- in Magnesite
Type
Raman scattering
Assignments summary
Assignment Symmetry Mode Specie(s) Molecule/Atom Bond Multiplicity Degeneracy Contribution Resonance
ν4 (Eg) Eg bending sym. in-p (scissoring) (CO3)2- (CO3)2- 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)
738 ± 2.5 - 15 ± 1 asymmetric 0.075 m 0.12 m 295.0 1
Label
ν4 (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)
ν4 (bending sym. in-p (scissoring))       Bond: (CO3)2-
Comments
O-C-O in-plane deformation
Texture
single crystals and powders

Temperature

Temperature
295.0 ± 5.0 K

Pressure

Pressure
1 bar
Laser wavelength
514.0 nm
Sample orientation mode
unoriented
Method #1
various
Overlap
isolated
Peak
738 ± 2.5 cm-1 (various)
Evaluation
validated
Quality
B
FWHM
15 ± 1 cm-1 (fwhm)
Shape
asymmetric
Evaluation
undefined
Quality
C
Method
peak intensity
Relative intensity
0.075 ± 0.025
Strength
medium (m)
Evaluation
undefined
Quality
E
Method
width x peak intensity
Relative intensity
0.12 ± 0.01
Strength
medium (m)
Evaluation
undefined
Quality
C