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: wB97X-D/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at wB97X-D/6-31G(2df,p)
 hartrees
Energy at 0K-463.804162
Energy at 298.15K-463.806089
HF Energy-463.804162
Nuclear repulsion energy190.536897
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 wB97X-D/6-31G(2df,p)
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 1874 1874 476.03      
2 A1 947 947 77.51      
3 A1 840 840 21.34      
4 A1 538 538 100.01      
5 B1 832 832 18.39      
6 B1 167 167 45.81      
7 B2 1086 1086 577.74      
8 B2 697 697 0.11      
9 B2 513 513 3.32      

Unscaled Zero Point Vibrational Energy (zpe) 3746.5 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 3746.5 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 wB97X-D/6-31G(2df,p)
ABC
0.41192 0.14186 0.10552

See section I.F.4 to change rotational constant units
Geometric Data calculated at wB97X-D/6-31G(2df,p)

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -0.698
O2 0.000 0.000 -1.896
Mg3 0.000 0.000 1.519
O4 0.000 1.131 0.070
O5 0.000 -1.131 0.070

Atom - Atom Distances (Å)
  C1 O2 Mg3 O4 O5
C11.19802.21681.36701.3670
O21.19803.41482.26792.2679
Mg32.21683.41481.83831.8383
O41.36702.26791.83832.2621
O51.36702.26791.83832.2621

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 86.194 C1 O5 Mg3 86.194
O2 C1 O4 124.167 O2 C1 O5 124.167
O4 C1 O5 111.666 O4 Mg3 O5 75.945
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at wB97X-D/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.579      
2 O -0.400      
3 Mg 0.930      
4 O -0.554      
5 O -0.554      


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 11.540 11.540
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -27.002 0.000 0.000
y 0.000 -36.479 0.000
z 0.000 0.000 -15.704
Traceless
 xyz
x -0.910 0.000 0.000
y 0.000 -15.126 0.000
z 0.000 0.000 16.036
Polar
3z2-r232.072
x2-y29.477
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.752 0.000 0.000
y 0.000 4.340 0.000
z 0.000 0.000 7.793


<r2> (average value of r2) Å2
<r2> 96.396
(<r2>)1/2 9.818