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

using model chemistry: CISD/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at CISD/6-31G*
 hartrees
Energy at 0K-897.252411
Energy at 298.15K-897.256271
HF Energy-896.516234
Nuclear repulsion energy386.840437
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 CISD/6-31G*
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 1253 1160 312.61      
2 A1 877 812 255.92      
3 A1 789 730 101.50      
4 A1 616 570 9.09      
5 A1 412 382 67.39      
6 A2 389 360 0.00      
7 B1 1427 1321 313.81      
8 B1 591 547 62.86      
9 B1 116 107 46.34      
10 B2 875 810 447.44      
11 B2 674 624 0.91      
12 B2 485 449 0.86      

Unscaled Zero Point Vibrational Energy (zpe) 4250.8 cm-1
Scaled (by 0.9258) Zero Point Vibrational Energy (zpe) 3935.4 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 CISD/6-31G*
ABC
0.17748 0.08231 0.08087

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Mg1 0.000 0.000 -1.898
S2 0.000 0.000 0.582
O3 0.000 1.195 -0.468
O4 0.000 -1.195 -0.468
O5 -1.242 0.000 1.310
O6 1.242 0.000 1.310

Atom - Atom Distances (Å)
  Mg1 S2 O3 O4 O5 O6
Mg12.48001.86341.86343.43993.4399
S22.48001.59071.59071.43931.4393
O31.86341.59072.38962.47612.4761
O41.86341.59072.38962.47612.4761
O53.43991.43932.47612.47612.4831
O63.43991.43932.47612.47612.4831

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 91.429 Mg1 O4 S2 91.429
O3 Mg1 O4 79.766 O3 S2 O4 97.377
O3 S2 O5 109.507 O3 S2 O6 109.507
O4 S2 O5 109.507 O4 S2 O6 109.507
O5 S2 O6 119.226
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability