Band
Title
1525.0 cm-1: ν3 of (CO3)2- in K2Ca(CO3)2 - phase beta
Type
Raman scattering
Assignments summary
Assignment Symmetry Mode Specie(s) Molecule/Atom Bond Multiplicity Degeneracy Contribution Resonance
ν3 unknown stretching asym. (CO3)2- CO-2/3 unknown
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)
1525 ± 5 - 60 ± 5 undefined 0.007 vw 295.0 1
Label
ν3
Symmetry
unknown
Category
fundamental vibration

Evaluation

Level
partly assigned
Evaluation
undefined
# Multiplicity type Degeneracy Other band
1 unknown

Vibration modes

Label (type)
ν3 (stretching asym.)       Bond: CO-2/3
Comments
in-phase and (in-plane) asymmetric stretch of CO32-
Composition
pure beta-K2Ca(CO3)2, formed at 3GPa/975°C
Texture
crystal

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
Voigt
Overlap
isolated
Peak
1525 ± 5 cm-1 (peak)
Evaluation
validated
Quality
C
FWHM
60 ± 5 cm-1 (hwhm)
Shape
undefined
Evaluation
validated
Quality
E
Comments
very broad
Method
estimated
Relative intensity
0.007 ± 0.0025
Strength
very weak (vw)
Evaluation
undefined
Quality
E