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All results from a given calculation for S8 (Octasulfur)

using model chemistry: MP2/SDD

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/SDD
 hartrees
Energy at 0K-3180.246053
Energy at 298.15K-3180.245586
HF Energy-3179.733817
Nuclear repulsion energy1090.972863
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/SDD
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 363 351 0.00      
2 A1 153 148 0.00      
3 B1 347 335 0.00      
4 B2 182 176 1.82      
5 E1 365 352 0.01      
5 E1 365 352 0.01      
6 E1 139 134 0.59      
6 E1 139 134 0.59      
7 E2 381 367 0.00      
7 E2 381 367 0.00      
8 E2 114 110 0.00      
8 E2 114 110 0.00      
9 E2 48 47 0.00      
9 E2 48 47 0.00      
10 E3 365 352 0.00      
10 E3 365 352 0.00      
11 E3 181 174 0.00      
11 E3 181 174 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 2114.5 cm-1
Scaled (by 0.9653) Zero Point Vibrational Energy (zpe) 2041.1 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 MP2/SDD
ABC
0.01780 0.01780 0.00978

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/SDD

Point Group is D4d

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 2.596 0.576
S2 2.596 0.000 0.576
S3 0.000 -2.596 0.576
S4 -2.596 0.000 0.576
S5 -1.836 1.836 -0.576
S6 -1.836 -1.836 -0.576
S7 1.836 -1.836 -0.576
S8 1.836 1.836 -0.576

Atom - Atom Distances (Å)
  S1 S2 S3 S4 S5 S6 S7 S8
S13.67185.19283.67182.29704.93394.93392.2970
S23.67183.67185.19284.93394.93392.29702.2970
S35.19283.67183.67184.93392.29702.29704.9339
S43.67185.19283.67182.29702.29704.93394.9339
S52.29704.93394.93392.29703.67185.19283.6718
S64.93394.93392.29702.29703.67183.67185.1928
S74.93392.29702.29704.93395.19283.67183.6718
S82.29702.29704.93394.93393.67185.19283.6718

picture of Octasulfur state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 S5 S4 106.121 S1 S8 S2 106.121
S2 S7 S3 106.121 S3 S6 S4 106.121
S5 S1 S8 106.121 S5 S4 S6 106.121
S6 S3 S7 106.121 S7 S2 S8 106.121
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability