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All results from a given calculation for S8 (Octasulfur)

using model chemistry: MP4/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D4D 1A1
Energy calculated at MP4/6-31G*
 hartrees
Energy at 0K-3181.184222
Energy at 298.15K-3181.185206
HF Energy-3180.073975
Nuclear repulsion energy1194.172157
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 MP4/6-31G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A1 474 452        
2 A1 214 204        
3 B1 430 411        
4 B2 249 238        
5 E1 467 446        
5 E1 467 446        
6 E1 194 185        
6 E1 194 185        
7 E2 445 425        
7 E2 445 425        
8 E2 151 144        
8 E2 150 144        
9 E2 72 69        
9 E2 72 68        
10 E3 472 451        
10 E3 472 451        
11 E3 249 237        
11 E3 249 237        

Unscaled Zero Point Vibrational Energy (zpe) 2731.9 cm-1
Scaled (by 0.9548) Zero Point Vibrational Energy (zpe) 2608.4 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 MP4/6-31G*
ABC
0.02125 0.02125 0.01155

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4/6-31G*

Point Group is D4d

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 2.388 0.499
S2 2.388 0.000 0.499
S3 0.000 -2.388 0.499
S4 -2.388 0.000 0.499
S5 -1.689 1.689 -0.499
S6 -1.689 -1.689 -0.499
S7 1.689 -1.689 -0.499
S8 1.689 1.689 -0.499

Atom - Atom Distances (Å)
  S1 S2 S3 S4 S5 S6 S7 S8
S13.37764.77663.37762.08274.52454.52452.0827
S23.37763.37764.77664.52454.52452.08272.0827
S34.77663.37763.37764.52452.08272.08274.5245
S43.37764.77663.37762.08272.08274.52454.5245
S52.08274.52454.52452.08273.37764.77663.3776
S64.52454.52452.08272.08273.37763.37764.7766
S74.52452.08272.08274.52454.77663.37763.3776
S82.08272.08274.52454.52453.37764.77663.3776

picture of Octasulfur state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 S5 S4 108.363 S1 S8 S2 108.363
S2 S7 S3 108.363 S3 S6 S4 108.363
S5 S1 S8 108.363 S5 S4 S6 108.363
S6 S3 S7 108.363 S7 S2 S8 108.363
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability