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: mPW1PW91/aug-cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at mPW1PW91/aug-cc-pVDZ
 hartrees
Energy at 0K-876.246171
Energy at 298.15K-876.252257
Nuclear repulsion energy220.504365
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 mPW1PW91/aug-cc-pVDZ
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 3182 3050 4.32      
2 A 3164 3032 5.45      
3 A 3064 2936 15.96      
4 A 1441 1381 0.38      
5 A 1430 1370 6.70      
6 A 1315 1260 0.38      
7 A 957 917 2.65      
8 A 954 914 0.47      
9 A 709 680 0.04      
10 A 514 492 0.48      
11 A 230 220 0.96      
12 A 152 146 0.10      
13 A 99 95 1.51      
14 B 3182 3049 5.67      
15 B 3164 3032 4.81      
16 B 3062 2934 22.45      
17 B 1445 1385 17.00      
18 B 1424 1365 10.95      
19 B 1307 1252 4.34      
20 B 958 918 12.54      
21 B 947 908 1.66      
22 B 708 678 3.22      
23 B 259 248 1.02      
24 B 154 147 0.38      

Unscaled Zero Point Vibrational Energy (zpe) 16910.7 cm-1
Scaled (by 0.9583) Zero Point Vibrational Energy (zpe) 16205.5 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 mPW1PW91/aug-cc-pVDZ
ABC
0.27263 0.09050 0.08368

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/aug-cc-pVDZ

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 -0.458 0.927 -0.493
S2 0.458 -0.927 -0.493
C3 0.458 1.834 0.794
C4 -0.458 -1.834 0.794
H5 0.054 2.854 0.788
H6 0.297 1.391 1.782
H7 1.525 1.863 0.553
H8 -0.054 -2.854 0.788
H9 -0.297 -1.391 1.782
H10 -1.525 -1.863 0.553

Atom - Atom Distances (Å)
  S1 S2 C3 C4 H5 H6 H7 H8 H9 H10
S12.06761.82123.04552.37022.44142.43004.01253.25183.1649
S22.06763.04551.82124.01253.25183.16492.37022.44142.4300
C31.82123.04553.78021.09761.09471.09434.71613.45674.2021
C43.04551.82123.78024.71613.45674.20211.09761.09471.0943
H52.37024.01251.09764.71611.78561.78925.70994.37494.9804
H62.44143.25181.09473.45671.78561.80004.37492.84553.9270
H72.43003.16491.09434.20211.78921.80004.98043.92704.8155
H84.01252.37024.71611.09765.70994.37494.98041.78561.7892
H93.25182.44143.45671.09474.37492.84553.92701.78561.8000
H103.16492.43004.20211.09434.98043.92704.81551.78921.8000

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 102.917 S1 C3 H5 105.915
S1 C3 H6 111.253 S1 C3 H7 110.426
S2 S1 C3 102.917 S2 C4 H8 105.915
S2 C4 H9 111.253 S2 C4 H10 110.426
H5 C3 H6 109.064 H5 C3 H7 109.425
H6 C3 H7 110.628 H8 C4 H9 109.064
H8 C4 H10 109.425 H9 C4 H10 110.628
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S 0.047      
2 S 0.047      
3 C 0.220      
4 C 0.220      
5 H -0.106      
6 H -0.101      
7 H -0.061      
8 H -0.106      
9 H -0.101      
10 H -0.061      


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 2.127 2.127
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -41.445 1.620 0.000
y 1.620 -35.055 0.000
z 0.000 0.000 -40.967
Traceless
 xyz
x -3.434 1.620 0.000
y 1.620 6.152 0.000
z 0.000 0.000 -2.718
Polar
3z2-r2-5.435
x2-y2-6.390
xy1.620
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 8.926 0.025 0.000
y 0.025 13.149 0.000
z 0.000 0.000 9.411


<r2> (average value of r2) Å2
<r2> 157.003
(<r2>)1/2 12.530