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

using model chemistry: CISD/3-21G

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 CISD/3-21G
 hartrees
Energy at 0K-791.221195
Energy at 298.15K-791.221023
HF Energy-791.100780
Nuclear repulsion energy64.496285
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/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 Σg 546 514 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 273.2 cm-1
Scaled (by 0.9413) Zero Point Vibrational Energy (zpe) 257.1 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/3-21G
B
0.23902

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

Point Group is D∞h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 1.050
S2 0.000 0.000 -1.050

Atom - Atom Distances (Å)
  S1 S2
S12.1004
S22.1004

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 CISD/3-21G
 hartrees
Energy at 0K-791.190171
Energy at 298.15K-791.189977
Nuclear repulsion energy63.772194
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/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 Σg 515 485 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 257.7 cm-1
Scaled (by 0.9413) Zero Point Vibrational Energy (zpe) 242.6 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 CISD/3-21G
B
0.23369

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

Point Group is D∞h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 1.062
S2 0.000 0.000 -1.062

Atom - Atom Distances (Å)
  S1 S2
S12.1243
S22.1243

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