return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for MgCO3 (Magnesium Carbonate)

using model chemistry: M06-2X/STO-3G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at M06-2X/STO-3G
 hartrees
Energy at 0K-457.779665
Energy at 298.15K-457.781448
HF Energy-457.779665
Nuclear repulsion energy188.911195
The energy at 298.15K was derived from the energy at 0K and an integrated heat capacity that used the calculated vibrational frequencies.
Vibrational Frequencies calculated at M06-2X/STO-3G
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A1 1935 1935 163.12      
2 A1 984 984 16.57      
3 A1 933 933 50.88      
4 A1 581 581 46.12      
5 B1 685 685 22.11      
6 B1 179 179 37.30      
7 B2 1158 1158 175.11      
8 B2 842 842 0.02      
9 B2 513 513 0.70      

Unscaled Zero Point Vibrational Energy (zpe) 3905.6 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 3905.6 cm-1
See section III.C.1 List or set vibrational scaling factors to change the scale factors used here.
See section III.C.2 Calculate a vibrational scaling factor for a given set of molecules to determine the least squares best scaling factor.
Rotational Constants (cm-1) from geometry optimized at M06-2X/STO-3G
ABC
0.38383 0.14380 0.10461

See section I.F.4 to change rotational constant units
Geometric Data calculated at M06-2X/STO-3G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -0.688
O2 0.000 0.000 -1.932
Mg3 0.000 0.000 1.463
O4 0.000 1.172 0.127
O5 0.000 -1.172 0.127

Atom - Atom Distances (Å)
  C1 O2 Mg3 O4 O5
C11.24422.15071.42751.4275
O21.24423.39492.36952.3695
Mg32.15073.39491.77651.7765
O41.42752.36951.77652.3434
O51.42752.36951.77652.3434

picture of Magnesium Carbonate state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 O4 Mg3 83.568 C1 O5 Mg3 83.568
O2 C1 O4 124.834 O2 C1 O5 124.834
O4 C1 O5 110.333 O4 Mg3 O5 82.532
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at M06-2X/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.183      
2 O -0.286      
3 Mg 0.902      
4 O -0.399      
5 O -0.399      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 9.235 9.235
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -22.838 0.000 0.000
y 0.000 -30.942 0.000
z 0.000 0.000 -16.568
Traceless
 xyz
x 0.917 0.000 0.000
y 0.000 -11.239 0.000
z 0.000 0.000 10.321
Polar
3z2-r220.643
x2-y28.104
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 0.934 0.000 0.000
y 0.000 1.821 0.000
z 0.000 0.000 5.568


<r2> (average value of r2) Å2
<r2> 95.253
(<r2>)1/2 9.760