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All results from a given calculation for S3 (Sulfur trimer)

using model chemistry: MP2/CEP-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
1 2 no D3H 1A1'

Conformer 1 (C2V)

Jump to S1C2
Energy calculated at MP2/CEP-31G
 hartrees
Energy at 0K-29.822889
Energy at 298.15K-29.823238
HF Energy-29.627117
Nuclear repulsion energy22.990208
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/CEP-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 485 468 0.00      
2 A1 216 209 2.64      
3 B2 917 887 934.75      

Unscaled Zero Point Vibrational Energy (zpe) 808.9 cm-1
Scaled (by 0.9663) Zero Point Vibrational Energy (zpe) 781.7 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/CEP-31G
ABC
0.58698 0.08055 0.07083

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/CEP-31G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 0.774
S2 0.000 1.809 -0.387
S3 0.000 -1.809 -0.387

Atom - Atom Distances (Å)
  S1 S2 S3
S12.14952.1495
S22.14953.6183
S32.14953.6183

picture of Sulfur trimer state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S2 S1 S3 114.631
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (D3H)

Jump to S1C1
Energy calculated at MP2/CEP-31G
 hartrees
Energy at 0K-29.808490
Energy at 298.15K-29.808642
HF Energy-29.645952
Nuclear repulsion energy24.361631
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/CEP-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' 461 445 0.00      
2 E' 343 331 0.19      
2 E' 343 331 0.19      

Unscaled Zero Point Vibrational Energy (zpe) 573.2 cm-1
Scaled (by 0.9663) Zero Point Vibrational Energy (zpe) 553.8 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/CEP-31G
ABC
0.19161 0.19161 0.09580

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/CEP-31G

Point Group is D3h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 1.354 0.000
S2 1.173 -0.677 0.000
S3 -1.173 -0.677 0.000

Atom - Atom Distances (Å)
  S1 S2 S3
S12.34592.3459
S22.34592.3459
S32.34592.3459

picture of Sulfur trimer state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S2 S1 S3 60.000
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability