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: B3PW91/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D4D 1A1
Energy calculated at B3PW91/3-21G
 hartrees
Energy at 0K-3169.417085
Energy at 298.15K-3169.416889
Nuclear repulsion energy1111.824963
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 B3PW91/3-21G
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 405 389 0.00      
2 A1 165 159 0.00      
3 B1 325 312 0.00      
4 B2 182 175 3.29      
5 E1 402 387 0.81      
5 E1 402 387 0.81      
6 E1 148 143 1.52      
6 E1 148 143 1.52      
7 E2 408 392 0.00      
7 E2 408 392 0.00      
8 E2 115 111 0.00      
8 E2 115 111 0.00      
9 E2 53 51 0.00      
9 E2 53 51 0.00      
10 E3 365 351 0.00      
10 E3 365 351 0.00      
11 E3 188 181 0.00      
11 E3 188 181 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 2217.8 cm-1
Scaled (by 0.9612) Zero Point Vibrational Energy (zpe) 2131.7 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 B3PW91/3-21G
ABC
0.01850 0.01850 0.01018

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/3-21G

Point Group is D4d

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 2.545 0.570
S2 2.545 0.000 0.570
S3 0.000 -2.545 0.570
S4 -2.545 0.000 0.570
S5 -1.800 1.800 -0.570
S6 -1.800 -1.800 -0.570
S7 1.800 -1.800 -0.570
S8 1.800 1.800 -0.570

Atom - Atom Distances (Å)
  S1 S2 S3 S4 S5 S6 S7 S8
S13.59925.09003.59922.25654.83864.83862.2565
S23.59923.59925.09004.83864.83862.25652.2565
S35.09003.59923.59924.83862.25652.25654.8386
S43.59925.09003.59922.25652.25654.83864.8386
S52.25654.83864.83862.25653.59925.09003.5992
S64.83864.83862.25652.25653.59923.59925.0900
S74.83862.25652.25654.83865.09003.59923.5992
S82.25652.25654.83864.83863.59925.09003.5992

picture of Octasulfur state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 S5 S4 105.783 S1 S8 S2 105.783
S2 S7 S3 105.783 S3 S6 S4 105.783
S5 S1 S8 105.783 S5 S4 S6 105.783
S6 S3 S7 105.783 S7 S2 S8 105.783
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S 0.000      
2 S 0.000      
3 S 0.000      
4 S 0.000      
5 S 0.000      
6 S 0.000      
7 S 0.000      
8 S 0.000      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 0.000 0.000
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -0.115 0.000 0.000
y 0.000 -0.115 0.000
z 0.000 0.000 0.229
Traceless
 xyz
x -0.172 0.000 0.000
y 0.000 -0.172 0.000
z 0.000 0.000 0.344
Polar
3z2-r20.687
x2-y20.000
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 28.940 0.000 0.000
y 0.000 28.940 0.000
z 0.000 0.000 13.320


<r2> (average value of r2) Å2
<r2> 938.731
(<r2>)1/2 30.639