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All results from a given calculation for S8 (Octasulfur)

using model chemistry: MP2=FULL/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=FULL/6-31G*
 hartrees
Energy at 0K-3181.140372
Energy at 298.15K-3181.141556
HF Energy-3180.075605
Nuclear repulsion energy1203.549672
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=FULL/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 490 461 0.00      
2 A1 221 208 0.00      
3 B1 452 426 0.00      
4 B2 256 241 7.76      
5 E1 484 456 0.77      
5 E1 484 456 0.77      
6 E1 200 188 3.33      
6 E1 200 188 3.33      
7 E2 491 462 0.00      
7 E2 491 462 0.00      
8 E2 155 146 0.00      
8 E2 155 146 0.00      
9 E2 74 69 0.00      
9 E2 74 69 0.00      
10 E3 465 438 0.00      
10 E3 465 438 0.00      
11 E3 256 241 0.00      
11 E3 256 241 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 2832.9 cm-1
Scaled (by 0.9422) Zero Point Vibrational Energy (zpe) 2669.1 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=FULL/6-31G*
ABC
0.02159 0.02159 0.01173

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

Point Group is D4d

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 2.370 0.495
S2 2.370 0.000 0.495
S3 0.000 -2.370 0.495
S4 -2.370 0.000 0.495
S5 -1.676 1.676 -0.495
S6 -1.676 -1.676 -0.495
S7 1.676 -1.676 -0.495
S8 1.676 1.676 -0.495

Atom - Atom Distances (Å)
  S1 S2 S3 S4 S5 S6 S7 S8
S13.35184.74023.35182.06624.48974.48972.0662
S23.35183.35184.74024.48974.48972.06622.0662
S34.74023.35183.35184.48972.06622.06624.4897
S43.35184.74023.35182.06622.06624.48974.4897
S52.06624.48974.48972.06623.35184.74013.3518
S64.48974.48972.06622.06623.35183.35184.7401
S74.48972.06622.06624.48974.74013.35183.3518
S82.06622.06624.48974.48973.35184.74013.3518

picture of Octasulfur state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 S5 S4 108.405 S1 S8 S2 108.405
S2 S7 S3 108.405 S3 S6 S4 108.405
S5 S1 S8 108.405 S5 S4 S6 108.405
S6 S3 S7 108.405 S7 S2 S8 108.405
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability