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All results from a given calculation for S2 (Sulfur diatomic)

using model chemistry: MP2/STO-3G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D*H 3Σg
2 1 yes D*H 1Σ

State 1 (3Σg)

Jump to S2C1
Energy calculated at MP2/STO-3G
 hartrees
Energy at 0K-786.382764
Energy at 298.15K-786.382662
HF Energy-786.315068
Nuclear repulsion energy68.967000
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/STO-3G
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 Σg 740 645 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 370.0 cm-1
Scaled (by 0.8719) Zero Point Vibrational Energy (zpe) 322.6 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/STO-3G
B
0.27331

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

Point Group is D∞h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 0.982
S2 0.000 0.000 -0.982

Atom - Atom Distances (Å)
  S1 S2
S11.9643
S21.9643

picture of Sulfur diatomic state 1 conformation 1
More geometry information
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

State 2 (1Σ)

Jump to S1C1
Energy calculated at MP2/STO-3G
 hartrees
Energy at 0K-786.350131
Energy at 298.15K-786.350000
Nuclear repulsion energy67.939025
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/STO-3G
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 Σg 679 592 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 339.7 cm-1
Scaled (by 0.8719) Zero Point Vibrational Energy (zpe) 296.2 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/STO-3G
B
0.26522

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

Point Group is D∞h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 0.997
S2 0.000 0.000 -0.997

Atom - Atom Distances (Å)
  S1 S2
S11.9940
S21.9940

picture of Sulfur diatomic state 2 conformation 1
More geometry information
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability