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: PBEPBE/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at PBEPBE/6-31+G**
 hartrees
Energy at 0K-463.499794
Energy at 298.15K-463.501446
HF Energy-463.499794
Nuclear repulsion energy186.646301
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 PBEPBE/6-31+G**
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 1722 1702 347.19      
2 A1 868 858 55.83      
3 A1 778 769 3.69      
4 A1 504 498 69.23      
5 B1 752 743 5.53      
6 B1 160 158 35.68      
7 B2 897 887 555.68      
8 B2 621 613 7.43      
9 B2 404 399 7.47      

Unscaled Zero Point Vibrational Energy (zpe) 3352.4 cm-1
Scaled (by 0.9886) Zero Point Vibrational Energy (zpe) 3314.2 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 PBEPBE/6-31+G**
ABC
0.39478 0.13618 0.10125

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/6-31+G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -0.707
O2 0.000 0.000 -1.929
Mg3 0.000 0.000 1.557
O4 0.000 1.155 0.062
O5 0.000 -1.155 0.062

Atom - Atom Distances (Å)
  C1 O2 Mg3 O4 O5
C11.22212.26391.38791.3879
O21.22213.48602.30212.3021
Mg32.26393.48601.88931.8893
O41.38792.30211.88932.3107
O51.38792.30211.88932.3107

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 85.950 C1 O5 Mg3 85.950
O2 C1 O4 123.650 O2 C1 O5 123.650
O4 C1 O5 112.701 O4 Mg3 O5 75.400
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.674      
2 O -0.522      
3 Mg 0.823      
4 O -0.488      
5 O -0.488      


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 11.146 11.146
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -28.315 0.000 0.000
y 0.000 -37.668 0.000
z 0.000 0.000 -18.350
Traceless
 xyz
x -0.306 0.000 0.000
y 0.000 -14.336 0.000
z 0.000 0.000 14.642
Polar
3z2-r229.284
x2-y29.354
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.615 0.000 0.000
y 0.000 6.000 0.000
z 0.000 0.000 11.607


<r2> (average value of r2) Å2
<r2> 100.836
(<r2>)1/2 10.042