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: HF/6-311G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at HF/6-311G**
 hartrees
Energy at 0K-874.316163
Energy at 298.15K-874.322581
Nuclear repulsion energy221.505066
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 HF/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 A 3290 2989 9.32      
2 A 3274 2974 9.84      
3 A 3191 2899 27.97      
4 A 1594 1448 0.17      
5 A 1587 1442 7.12      
6 A 1492 1355 5.57      
7 A 1073 975 7.42      
8 A 1071 973 0.27      
9 A 765 695 1.90      
10 A 542 492 0.28      
11 A 255 231 1.88      
12 A 178 162 0.02      
13 A 101 91 1.77      
14 B 3289 2988 16.61      
15 B 3272 2973 11.92      
16 B 3189 2897 32.24      
17 B 1598 1452 18.68      
18 B 1581 1437 9.01      
19 B 1483 1348 12.86      
20 B 1077 979 18.01      
21 B 1064 967 2.81      
22 B 758 689 1.80      
23 B 284 258 1.74      
24 B 187 170 0.43      

Unscaled Zero Point Vibrational Energy (zpe) 18095.9 cm-1
Scaled (by 0.9085) Zero Point Vibrational Energy (zpe) 16440.1 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 HF/6-311G**
ABC
0.27432 0.09121 0.08455

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

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 -0.460 0.924 -0.490
S2 0.460 -0.924 -0.490
C3 0.460 1.824 0.789
C4 -0.460 -1.824 0.789
H5 0.051 2.827 0.806
H6 0.327 1.369 1.761
H7 1.511 1.868 0.539
H8 -0.051 -2.827 0.806
H9 -0.327 -1.369 1.761
H10 -1.511 -1.868 0.539

Atom - Atom Distances (Å)
  S1 S2 C3 C4 H5 H6 H7 H8 H9 H10
S12.06451.81423.03102.35842.42542.41503.98983.21593.1552
S22.06453.03101.81423.98983.21593.15522.35842.42542.4150
C31.81423.03103.76241.08361.08131.08054.67923.42964.1921
C43.03101.81423.76244.67923.42964.19211.08361.08131.0805
H52.35843.98981.08364.67921.76431.76745.65514.32024.9546
H62.42543.21591.08133.42961.76431.77234.32022.81573.9175
H72.41503.15521.08054.19211.76741.77234.95463.91754.8040
H83.98982.35844.67921.08365.65514.32024.95461.76431.7674
H93.21592.42543.42961.08134.32022.81573.91751.76431.7723
H103.15522.41504.19211.08054.95463.91754.80401.76741.7723

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 102.591 S1 C3 H5 106.191
S1 C3 H6 111.249 S1 C3 H7 110.504
S2 S1 C3 102.591 S2 C4 H8 106.191
S2 C4 H9 111.249 S2 C4 H10 110.504
H5 C3 H6 109.165 H5 C3 H7 109.507
H6 C3 H7 110.131 H8 C4 H9 109.165
H8 C4 H10 109.507 H9 C4 H10 110.131
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-311G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S -0.013      
2 S -0.013      
3 C -0.378      
4 C -0.378      
5 H 0.128      
6 H 0.124      
7 H 0.139      
8 H 0.128      
9 H 0.124      
10 H 0.139      


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 2.412 2.412
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -42.469 2.088 0.000
y 2.088 -35.844 0.000
z 0.000 0.000 -41.904
Traceless
 xyz
x -3.595 2.088 0.000
y 2.088 6.342 0.000
z 0.000 0.000 -2.747
Polar
3z2-r2-5.494
x2-y2-6.624
xy2.088
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.957 -0.309 0.000
y -0.309 10.987 0.000
z 0.000 0.000 7.353


<r2> (average value of r2) Å2
<r2> 156.310
(<r2>)1/2 12.502