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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-3181.054345
HF Energy-3180.075475
Nuclear repulsion energy1202.356970
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 490 462 0.00      
2 A1 221 208 0.00      
3 B1 453 427 0.00      
4 B2 256 242 7.75      
5 E1 484 456 0.76      
5 E1 484 456 0.76      
6 E1 199 188 3.34      
6 E1 199 188 3.34      
7 E2 491 463 0.00      
7 E2 491 463 0.00      
8 E2 155 146 0.00      
8 E2 155 146 0.00      
9 E2 74 70 0.00      
9 E2 74 70 0.00      
10 E3 465 439 0.00      
10 E3 465 439 0.00      
11 E3 255 241 0.00      
11 E3 255 241 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 2833.4 cm-1
Scaled (by 0.943) Zero Point Vibrational Energy (zpe) 2671.9 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
0.02154 0.02154 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 2.347 0.409
S2 2.347 0.000 0.409
S3 0.000 -2.347 0.409
S4 -2.347 0.000 0.409
S5 -1.659 1.659 -0.409
S6 -1.659 -1.659 -0.409
S7 1.659 -1.659 -0.409
S8 1.659 1.659 -0.409

Atom - Atom Distances (Å)
  S1 S2 S3 S4 S5 S6 S7 S8
S13.31854.69303.31851.97314.41214.41211.9731
S23.31853.31854.69304.41214.41211.97311.9731
S34.69303.31853.31854.41211.97311.97314.4121
S43.31854.69303.31851.97311.97314.41214.4121
S51.97314.41214.41211.97313.31854.69303.3185
S64.41214.41211.97311.97313.31853.31854.6930
S74.41211.97311.97314.41214.69303.31853.3185
S81.97311.97314.41214.41213.31854.69303.3185

picture of Octasulfur state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 S5 S4 114.478 S1 S8 S2 114.478
S2 S7 S3 114.478 S3 S6 S4 114.478
S5 S1 S8 114.478 S5 S4 S6 114.478
S6 S3 S7 114.478 S7 S2 S8 114.478
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability