Band
Title
936.0 cm-1: ν4T(Eg) of (CO3)2- in Calcite
Type
absorption
Assignments summary
Assignment Symmetry Mode Specie(s) Molecule/Atom Bond Multiplicity Degeneracy Contribution Resonance
ν4T(Eg) combination (CO3)2- (CO3)2- 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)
936 ± 1 - 18 ± 2 asymmetric 6.0e-04 w 295.0 1
Label
ν4T(Eg)
Category
combination

Evaluation

Level
uncertain assignment
Evaluation
undefined
Comments
attribution SSHADE
# Multiplicity type Degeneracy Other band
1 unknown

Vibration modes

Label (type)
ν4 (deformation asym.)       Bond: (CO3)2-
Comments
O-C-O in-plane deformation

Phonon modes

Label (type)
νT (translation)
Comments
CO32- translation, Ca2+ translation

Temperature

Temperature
295.0 ± 5.0 K

Pressure

Pressure
1 bar
Method #1
various
Overlap
strongly blended
Peak
936 ± 1 cm-1 (peak)
Evaluation
validated
Quality
B
Comments
with a strong shoulder on the high frequency wing
FWHM
18 ± 2 cm-1 (hwhm)
Shape
asymmetric
Evaluation
validated
Quality
D
Method
baseline corrected peak intensity
Relative intensity
6.0e-04 ± 2.0e-04
Strength
weak (w)
Evaluation
undefined
Quality
E