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All results from a given calculation for MgSO4 (Magnesium Sulfate)

using model chemistry: MP2/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at MP2/3-21G
 hartrees
Energy at 0K-892.220552
Energy at 298.15K-892.223774
HF Energy-891.625785
Nuclear repulsion energy361.957751
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 MP2/3-21G
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 1069 1020 162.71      
2 A1 720 687 136.13      
3 A1 679 648 179.75      
4 A1 503 480 20.59      
5 A1 359 343 38.65      
6 A2 300 286 0.00      
7 B1 1219 1164 126.32      
8 B1 453 432 56.35      
9 B1 123 117 38.71      
10 B2 696 664 186.27      
11 B2 570 544 73.64      
12 B2 378 360 6.23      

Unscaled Zero Point Vibrational Energy (zpe) 3533.6 cm-1
Scaled (by 0.9545) Zero Point Vibrational Energy (zpe) 3372.8 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 MP2/3-21G
ABC
0.15236 0.07376 0.07169

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/3-21G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Mg1 0.000 0.000 -1.949
S2 0.000 0.000 0.626
O3 0.000 1.275 -0.564
O4 0.000 -1.275 -0.564
O5 -1.354 0.000 1.400
O6 1.354 0.000 1.400

Atom - Atom Distances (Å)
  Mg1 S2 O3 O4 O5 O6
Mg12.57491.88301.88303.61253.6125
S22.57491.74401.74401.55951.5595
O31.88301.74402.55072.70482.7048
O41.88301.74402.55072.70482.7048
O53.61251.55952.70482.70482.7072
O63.61251.55952.70482.70482.7072

picture of Magnesium Sulfate state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Mg1 O3 S2 90.373 Mg1 O4 S2 90.373
O3 Mg1 O4 85.265 O3 S2 O4 93.988
O3 S2 O5 109.798 O3 S2 O6 109.798
O4 S2 O5 109.798 O4 S2 O6 109.798
O5 S2 O6 120.452
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability