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: MP2/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at MP2/6-311G*
 hartrees
Energy at 0K-874.841286
Energy at 298.15K-874.847598
HF Energy-874.305792
Nuclear repulsion energy222.422049
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 MP2/6-311G*
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 3199 3040 3.58      
2 A 3185 3027 7.05      
3 A 3088 2935 21.31      
4 A 1510 1435 0.67      
5 A 1504 1429 9.18      
6 A 1425 1355 0.85      
7 A 1029 978 8.41      
8 A 1017 967 2.59      
9 A 746 709 0.16      
10 A 510 485 0.26      
11 A 247 235 1.63      
12 A 177 168 0.12      
13 A 102 97 1.12      
14 B 3198 3039 8.18      
15 B 3185 3027 5.37      
16 B 3086 2933 18.90      
17 B 1515 1440 21.98      
18 B 1494 1420 13.30      
19 B 1417 1347 1.48      
20 B 1024 974 23.87      
21 B 1020 969 6.41      
22 B 743 706 1.91      
23 B 275 262 1.70      
24 B 192 183 0.41      

Unscaled Zero Point Vibrational Energy (zpe) 17444.9 cm-1
Scaled (by 0.9503) Zero Point Vibrational Energy (zpe) 16577.9 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 MP2/6-311G*
ABC
0.26519 0.09480 0.08649

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-311G*

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 -0.429 0.934 -0.533
S2 0.429 -0.934 -0.533
C3 0.429 1.719 0.856
C4 -0.429 -1.719 0.856
H5 0.071 2.750 0.895
H6 0.194 1.226 1.799
H7 1.506 1.717 0.693
H8 -0.071 -2.750 0.895
H9 -0.194 -1.226 1.799
H10 -1.506 -1.717 0.693

Atom - Atom Distances (Å)
  S1 S2 C3 C4 H5 H6 H7 H8 H9 H10
S12.05591.81052.99482.36282.43122.41983.96733.18763.1131
S22.05592.99481.81053.96733.18763.11312.36282.43122.4198
C31.81052.99483.54351.09191.09011.08944.49713.15483.9464
C42.99481.81053.54354.49713.15483.94641.09191.09011.0894
H52.36283.96731.09194.49711.77651.77975.50194.08644.7412
H62.43123.18761.09013.15481.77651.78474.08642.48293.5742
H72.41983.11311.08943.94641.77971.78474.74123.57424.5672
H83.96732.36284.49711.09195.50194.08644.74121.77651.7797
H93.18762.43123.15481.09014.08642.48293.57421.77651.7847
H103.11312.41983.94641.08944.74123.57424.56721.77971.7847

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 101.342 S1 C3 H5 106.340
S1 C3 H6 111.464 S1 C3 H7 110.644
S2 S1 C3 101.342 S2 C4 H8 106.340
S2 C4 H9 111.464 S2 C4 H10 110.644
H5 C3 H6 109.008 H5 C3 H7 109.349
H6 C3 H7 109.944 H8 C4 H9 109.008
H8 C4 H10 109.349 H9 C4 H10 109.944
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability