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: MP3/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at MP3/6-31G*
 hartrees
Energy at 0K-874.798863
Energy at 298.15K-874.805088
HF Energy-874.247108
Nuclear repulsion energy221.401534
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 MP3/6-31G*
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 3224 3026 3.56      
2 A 3209 3012 7.61      
3 A 3120 2929 17.35      
4 A 1538 1443 0.49      
5 A 1524 1430 7.50      
6 A 1438 1350 1.19      
7 A 1033 970 5.48      
8 A 1027 964 2.73      
9 A 749 703 0.12      
10 A 524 492 0.14      
11 A 241 226 1.55      
12 A 158 148 0.00      
13 A 98 92 1.33      
14 B 3224 3026 8.59      
15 B 3209 3012 5.05      
16 B 3119 2927 15.00      
17 B 1541 1447 18.37      
18 B 1517 1424 10.65      
19 B 1431 1343 2.92      
20 B 1033 969 18.51      
21 B 1024 962 3.11      
22 B 744 699 1.24      
23 B 272 255 1.31      
24 B 169 159 0.41      

Unscaled Zero Point Vibrational Energy (zpe) 17582.9 cm-1
Scaled (by 0.9386) Zero Point Vibrational Energy (zpe) 16503.3 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 MP3/6-31G*
ABC
0.26762 0.09280 0.08497

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3/6-31G*

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 -0.456 0.926 -0.503
S2 0.456 -0.926 -0.503
C3 0.456 1.796 0.807
C4 -0.456 -1.796 0.807
H5 0.054 2.812 0.847
H6 0.307 1.321 1.779
H7 1.521 1.839 0.575
H8 -0.054 -2.812 0.847
H9 -0.307 -1.321 1.779
H10 -1.521 -1.839 0.575

Atom - Atom Distances (Å)
  S1 S2 C3 C4 H5 H6 H7 H8 H9 H10
S12.06431.81773.02102.37462.43762.42913.99463.20553.1526
S22.06433.02101.81773.99463.20553.15262.37462.43762.4291
C31.81773.02103.70601.09321.09161.09064.63653.35254.1436
C43.02101.81773.70604.63653.35254.14361.09321.09161.0906
H52.37463.99461.09324.63651.77671.78095.62534.25204.9176
H62.43763.20551.09163.35251.77671.78584.25202.71183.8429
H72.42913.15261.09064.14361.78091.78584.91763.84294.7717
H83.99462.37464.63651.09325.62534.25204.91761.77671.7809
H93.20552.43763.35251.09164.25202.71183.84291.77671.7858
H103.15262.42914.14361.09064.91763.84294.77171.78091.7858

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 102.005 S1 C3 H5 106.657
S1 C3 H6 111.375 S1 C3 H7 110.788
S2 S1 C3 102.005 S2 C4 H8 106.657
S2 C4 H9 111.375 S2 C4 H10 110.788
H5 C3 H6 108.819 H5 C3 H7 109.271
H6 C3 H7 109.842 H8 C4 H9 108.819
H8 C4 H10 109.271 H9 C4 H10 109.842
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability