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: MP2=FULL/cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at MP2=FULL/cc-pVDZ
 hartrees
Energy at 0K-462.819172
Energy at 298.15K-462.821054
HF Energy-462.105850
Nuclear repulsion energy187.674205
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 MP2=FULL/cc-pVDZ
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 1837 1746 429.19      
2 A1 900 856 97.52      
3 A1 816 776 9.50      
4 A1 541 514 92.30      
5 B1 805 765 13.70      
6 B1 166 157 48.43      
7 B2 1018 968 527.98      
8 B2 682 648 2.00      
9 B2 504 479 1.26      

Unscaled Zero Point Vibrational Energy (zpe) 3634.5 cm-1
Scaled (by 0.9504) Zero Point Vibrational Energy (zpe) 3454.3 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 MP2=FULL/cc-pVDZ
ABC
0.39783 0.13792 0.10242

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/cc-pVDZ

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 -1.917
Mg3 0.000 0.000 1.546
O4 0.000 1.151 0.064
O5 0.000 -1.151 0.064

Atom - Atom Distances (Å)
  C1 O2 Mg3 O4 O5
C11.21012.25271.38531.3853
O21.21013.46292.29122.2912
Mg32.25273.46291.87621.8762
O41.38532.29121.87622.3018
O51.38532.29121.87622.3018

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 85.982 C1 O5 Mg3 85.982
O2 C1 O4 123.820 O2 C1 O5 123.820
O4 C1 O5 112.360 O4 Mg3 O5 75.677
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability