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

using model chemistry: QCISD/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 QCISD/3-21G
 hartrees
Energy at 0K-791.230006
Energy at 298.15K-791.229818
HF Energy-791.099583
Nuclear repulsion energy63.911446
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 QCISD/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 523 507 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 261.5 cm-1
Scaled (by 0.9692) Zero Point Vibrational Energy (zpe) 253.4 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 QCISD/3-21G
B
0.23471

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

Point Group is D∞h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 1.060
S2 0.000 0.000 -1.060

Atom - Atom Distances (Å)
  S1 S2
S12.1196
S22.1196

picture of Sulfur diatomic state 1 conformation 1
More geometry information
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability

State 2 (1Σ)

Jump to S1C1
Energy calculated at QCISD/3-21G
 hartrees
Energy at 0K-791.203227
Energy at 298.15K-791.202992
Nuclear repulsion energy62.627778
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 QCISD/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 463 448 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 231.2 cm-1
Scaled (by 0.9692) Zero Point Vibrational Energy (zpe) 224.1 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 QCISD/3-21G
B
0.22538

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

Point Group is D∞h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 1.082
S2 0.000 0.000 -1.082

Atom - Atom Distances (Å)
  S1 S2
S12.1631
S22.1631

picture of Sulfur diatomic state 2 conformation 1
More geometry information
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability