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 CH3SSCH3 (Disulfide, dimethyl)

using model chemistry: G4

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at G4
 hartrees
Energy at 0K-875.885345
Energy at 298.15K-875.877863
HF Energy-876.229744
Nuclear repulsion energy220.021812
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 B3LYP/6-31G(2df,p)
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A 3154 3044 4.82      
2 A 3135 3026 6.65      
3 A 3048 2942 13.73      
4 A 1475 1423 0.58      
5 A 1461 1410 4.29      
6 A 1343 1296 2.78      
7 A 967 934 3.58      
8 A 963 930 0.92      
9 A 685 661 0.05      
10 A 500 483 0.44      
11 A 229 221 1.01      
12 A 141 136 0.10      
13 A 101 97 1.40      
14 B 3154 3043 6.93      
15 B 3135 3025 4.28      
16 B 3047 2940 19.30      
17 B 1478 1426 13.86      
18 B 1455 1404 7.97      
19 B 1335 1288 10.92      
20 B 969 935 15.40      
21 B 957 923 2.16      
22 B 683 659 2.61      
23 B 259 250 1.13      
24 B 149 144 0.39      

Unscaled Zero Point Vibrational Energy (zpe) 16911.0 cm-1
Scaled (by 0.965) Zero Point Vibrational Energy (zpe) 16319.1 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 B3LYP/6-31G(2df,p)
ABC
0.27396 0.08955 0.08276

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-31G(2df,p)

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 1.031 -0.493
S2 0.000 -1.031 -0.493
C3 1.227 1.464 0.794
C4 -1.227 -1.464 0.794
H5 1.306 2.555 0.777
H6 0.893 1.145 1.782
H7 2.197 1.024 0.560
H8 -1.306 -2.555 0.777
H9 -0.893 -1.145 1.782
H10 -2.197 -1.024 0.560

Atom - Atom Distances (Å)
  S1 S2 C3 C4 H5 H6 H7 H8 H9 H10
S12.06261.82953.06372.37442.44642.43604.02203.27223.1874
S22.06263.06371.82954.02203.27223.18742.37442.44642.4360
C31.82953.06373.81991.09391.09111.09054.75033.50344.2387
C43.06371.82953.81994.75033.50344.23871.09391.09111.0905
H52.37444.02201.09394.75031.78061.78415.73864.41955.0127
H62.44643.27221.09113.50341.78061.79164.41952.90323.9678
H72.43603.18741.09054.23871.78411.79165.01273.96784.8478
H84.02202.37444.75031.09395.73864.41955.01271.78061.7841
H93.27222.44643.50341.09114.41952.90323.96781.78061.7916
H103.18742.43604.23871.09055.01273.96784.84781.78411.7916

picture of Disulfide, dimethyl state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 S2 C4 103.726 S1 C3 H5 106.169
S1 C3 H6 111.329 S1 C3 H7 110.596
S2 S1 C3 103.726 S2 C4 H8 106.169
S2 C4 H9 111.329 S2 C4 H10 110.596
H5 C3 H6 109.002 H5 C3 H7 109.391
H6 C3 H7 110.246 H8 C4 H9 109.002
H8 C4 H10 109.391 H9 C4 H10 110.246
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S -0.075      
2 S -0.075      
3 C -0.373      
4 C -0.373      
5 H 0.149      
6 H 0.144      
7 H 0.156      
8 H 0.149      
9 H 0.144      
10 H 0.156      


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 2.131 2.131
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å


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


<r2> (average value of r2) Å2
<r2> 157.872
(<r2>)1/2 12.565