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

using model chemistry: QCISD/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at QCISD/3-21G*
 hartrees
Energy at 0K-460.020980
Energy at 298.15K-460.022741
HF Energy-459.534738
Nuclear repulsion energy185.258371
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 QCISD/3-21G*
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 1803 1732 315.60      
2 A1 816 784 23.65      
3 A1 799 768 74.16      
4 A1 529 509 77.08      
5 B1 734 705 22.11      
6 B1 167 160 45.63      
7 B2 854 821 284.06      
8 B2 647 622 37.29      
9 B2 517 497 0.03      

Unscaled Zero Point Vibrational Energy (zpe) 3432.0 cm-1
Scaled (by 0.9611) Zero Point Vibrational Energy (zpe) 3298.5 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 QCISD/3-21G*
ABC
0.37498 0.13698 0.10033

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/3-21G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -0.727
O2 0.000 0.000 -1.945
Mg3 0.000 0.000 1.526
O4 0.000 1.185 0.100
O5 0.000 -1.185 0.100

Atom - Atom Distances (Å)
  C1 O2 Mg3 O4 O5
C11.21822.25331.44571.4457
O21.21823.47152.36432.3643
Mg32.25333.47151.85431.8543
O41.44572.36431.85432.3709
O51.44572.36431.85432.3709

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 85.175 C1 O5 Mg3 85.175
O2 C1 O4 124.916 O2 C1 O5 124.916
O4 C1 O5 110.169 O4 Mg3 O5 79.481
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability