return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for S8 (Octasulfur)

using model chemistry: QCISD/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D4D 1A1
Energy calculated at QCISD/6-311G*
 hartrees
Energy at 0K-3181.349556
Energy at 298.15K-3181.350543
HF Energy-3180.250700
Nuclear repulsion energy1192.304792
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/6-311G*
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 464 444 0.00      
2 A1 213 204 0.00      
3 B1 429 411 0.00      
4 B2 252 241 7.68      
5 E1 458 438 0.71      
5 E1 458 438 0.71      
6 E1 194 186 2.99      
6 E1 194 186 2.99      
7 E2 468 448 0.00      
7 E2 468 448 0.00      
8 E2 152 146 0.00      
8 E2 152 146 0.00      
9 E2 70 67 0.00      
9 E2 70 67 0.00      
10 E3 445 426 0.00      
10 E3 445 426 0.00      
11 E3 246 236 0.00      
11 E3 246 236 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 2712.3 cm-1
Scaled (by 0.9574) Zero Point Vibrational Energy (zpe) 2596.8 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 QCISD/6-311G*
ABC
0.02120 0.02120 0.01155

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/6-311G*

Point Group is D4d

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 2.388 0.506
S2 2.388 0.000 0.506
S3 0.000 -2.388 0.506
S4 -2.388 0.000 0.506
S5 -1.689 1.689 -0.506
S6 -1.689 -1.689 -0.506
S7 1.689 -1.689 -0.506
S8 1.689 1.689 -0.506

Atom - Atom Distances (Å)
  S1 S2 S3 S4 S5 S6 S7 S8
S13.37774.77683.37772.08964.52784.52782.0896
S23.37773.37774.77684.52784.52782.08962.0896
S34.77683.37773.37774.52782.08962.08964.5278
S43.37774.77683.37772.08962.08964.52784.5278
S52.08964.52784.52782.08963.37774.77683.3777
S64.52784.52782.08962.08963.37773.37774.7768
S74.52782.08962.08964.52784.77683.37773.3777
S82.08962.08964.52784.52783.37774.77683.3777

picture of Octasulfur state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 S5 S4 107.845 S1 S8 S2 107.845
S2 S7 S3 107.845 S3 S6 S4 107.845
S5 S1 S8 107.845 S5 S4 S6 107.845
S6 S3 S7 107.845 S7 S2 S8 107.845
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability