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: CCD/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 CCD/6-31G**
 hartrees
Energy at 0K-874.853360
Energy at 298.15K-874.859599
HF Energy-874.257026
Nuclear repulsion energy221.552955
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 CCD/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 3243 3040 5.09      
2 A 3229 3027 8.53      
3 A 3133 2937 19.63      
4 A 1540 1444 0.65      
5 A 1525 1430 5.28      
6 A 1436 1346 2.85      
7 A 1029 965 3.85      
8 A 1022 958 2.83      
9 A 748 701 0.07      
10 A 524 491 0.10      
11 A 241 226 1.49      
12 A 160 150 0.00      
13 A 97 91 1.15      
14 B 3242 3040 11.77      
15 B 3228 3027 7.97      
16 B 3131 2936 18.83      
17 B 1543 1447 14.29      
18 B 1518 1423 7.55      
19 B 1428 1339 6.66      
20 B 1027 963 15.14      
21 B 1020 957 2.12      
22 B 743 697 1.08      
23 B 271 254 1.16      
24 B 171 160 0.34      

Unscaled Zero Point Vibrational Energy (zpe) 17624.0 cm-1
Scaled (by 0.9376) Zero Point Vibrational Energy (zpe) 16524.3 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 CCD/6-31G**
ABC
0.26777 0.09287 0.08512

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

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 1.033 -0.502
S2 0.000 -1.033 -0.502
C3 1.204 1.407 0.806
C4 -1.204 -1.407 0.806
H5 1.293 2.491 0.849
H6 0.864 1.045 1.774
H7 2.174 0.977 0.573
H8 -1.293 -2.491 0.849
H9 -0.864 -1.045 1.774
H10 -2.174 -0.977 0.573

Atom - Atom Distances (Å)
  S1 S2 C3 C4 H5 H6 H7 H8 H9 H10
S12.06531.81683.01852.37142.43432.42623.98933.20023.1501
S22.06533.01851.81683.98933.20023.15012.37142.43432.4262
C31.81683.01853.70321.08911.08751.08664.62933.35014.1415
C43.01851.81683.70324.62933.35014.14151.08911.08751.0866
H52.37143.98931.08914.62931.76971.77385.61354.24404.9121
H62.43433.20021.08753.35011.76971.77874.24402.71173.8425
H72.42623.15011.08664.14151.77381.77874.91213.84254.7680
H83.98932.37144.62931.08915.61354.24404.91211.76971.7738
H93.20022.43433.35011.08754.24402.71173.84251.76971.7787
H103.15012.42624.14151.08664.91213.84254.76801.77381.7787

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 101.880 S1 C3 H5 106.691
S1 C3 H6 111.410 S1 C3 H7 110.840
S2 S1 C3 101.880 S2 C4 H8 106.691
S2 C4 H9 111.410 S2 C4 H10 110.840
H5 C3 H6 108.787 H5 C3 H7 109.227
H6 C3 H7 109.797 H8 C4 H9 108.787
H8 C4 H10 109.227 H9 C4 H10 109.797
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability