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All results from a given calculation for S8 (Octasulfur)

using model chemistry: MP2/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D4D 1A1
Energy calculated at MP2/6-31G**
 hartrees
Energy at 0K-3181.053160
Energy at 298.15K-3181.054374
HF Energy-3180.075505
Nuclear repulsion energy1202.593538
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 MP2/6-31G**
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 490 459 0.00      
2 A1 221 207 0.00      
3 B1 453 424 0.00      
4 B2 256 240 7.77      
5 E1 484 454 0.77      
5 E1 484 454 0.77      
6 E1 199 187 3.33      
6 E1 199 187 3.33      
7 E2 491 460 0.00      
7 E2 491 460 0.00      
8 E2 155 145 0.00      
8 E2 155 145 0.00      
9 E2 74 69 0.00      
9 E2 74 69 0.00      
10 E3 466 436 0.00      
10 E3 466 436 0.00      
11 E3 255 239 0.00      
11 E3 255 239 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 2834.9 cm-1
Scaled (by 0.9365) Zero Point Vibrational Energy (zpe) 2654.9 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 MP2/6-31G**
ABC
0.02155 0.02155 0.01171

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-31G**

Point Group is D4d

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 2.372 0.495
S2 2.372 0.000 0.495
S3 0.000 -2.372 0.495
S4 -2.372 0.000 0.495
S5 -1.677 1.677 -0.495
S6 -1.677 -1.677 -0.495
S7 1.677 -1.677 -0.495
S8 1.677 1.677 -0.495

Atom - Atom Distances (Å)
  S1 S2 S3 S4 S5 S6 S7 S8
S13.35484.74433.35482.06774.49354.49352.0677
S23.35483.35484.74434.49354.49352.06772.0677
S34.74433.35483.35484.49352.06772.06774.4935
S43.35484.74433.35482.06772.06774.49354.4935
S52.06774.49354.49352.06773.35484.74433.3548
S64.49354.49352.06772.06773.35483.35484.7443
S74.49352.06772.06774.49354.74433.35483.3548
S82.06772.06774.49354.49353.35484.74433.3548

picture of Octasulfur state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 S5 S4 108.435 S1 S8 S2 108.435
S2 S7 S3 108.435 S3 S6 S4 108.435
S5 S1 S8 108.435 S5 S4 S6 108.435
S6 S3 S7 108.435 S7 S2 S8 108.435
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability