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All results from a given calculation for CH3SSCH3 (Disulfide, dimethyl)

using model chemistry: CID/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at CID/3-21G
 hartrees
Energy at 0K-870.208488
Energy at 298.15K-870.214392
Nuclear repulsion energy210.030230
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 CID/3-21G
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 3255 3033 3.73      
2 A 3233 3012 5.00      
3 A 3146 2931 13.75      
4 A 1580 1472 0.06      
5 A 1574 1466 10.80      
6 A 1447 1348 2.49      
7 A 1028 958 3.64      
8 A 1023 953 3.86      
9 A 661 615 2.45      
10 A 435 405 0.00      
11 A 202 188 0.97      
12 A 139 129 0.00      
13 A 78 73 1.73      
14 B 3255 3032 5.70      
15 B 3233 3012 0.89      
16 B 3143 2928 9.26      
17 B 1584 1476 20.99      
18 B 1568 1461 13.79      
19 B 1439 1341 9.16      
20 B 1032 961 16.45      
21 B 1021 951 3.04      
22 B 656 612 1.66      
23 B 236 220 1.56      
24 B 151 140 0.48      

Unscaled Zero Point Vibrational Energy (zpe) 17559.6 cm-1
Scaled (by 0.9316) Zero Point Vibrational Energy (zpe) 16358.5 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 CID/3-21G
ABC
0.23609 0.08327 0.07707

See section I.F.4 to change rotational constant units
Geometric Data calculated at CID/3-21G

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 1.139 -0.528
S2 0.000 -1.139 -0.528
C3 1.271 1.426 0.856
C4 -1.271 -1.426 0.856
H5 1.384 2.507 0.936
H6 0.895 1.017 1.790
H7 2.213 0.963 0.576
H8 -1.384 -2.507 0.936
H9 -0.895 -1.017 1.790
H10 -2.213 -0.963 0.576

Atom - Atom Distances (Å)
  S1 S2 C3 C4 H5 H6 H7 H8 H9 H10
S12.27711.90093.17942.43572.48762.47894.16553.28933.2450
S22.27713.17941.90094.16553.28933.24502.43572.48762.4789
C31.90093.17943.82081.08981.08721.08624.74653.39574.2334
C43.17941.90093.82084.74653.39574.23341.08981.08721.0862
H52.43574.16551.08984.74651.78621.78905.72804.28285.0109
H62.48763.28931.08723.39571.78621.79294.28282.70863.8791
H72.47893.24501.08624.23341.78901.79295.01093.87914.8260
H84.16552.43574.74651.08985.72804.28285.01091.78621.7890
H93.28932.48763.39571.08724.28282.70863.87911.78621.7929
H103.24502.47894.23341.08625.01093.87914.82601.78901.7929

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 98.703 S1 C3 H5 105.853
S1 C3 H6 109.695 S1 C3 H7 109.111
S2 S1 C3 98.703 S2 C4 H8 105.853
S2 C4 H9 109.695 S2 C4 H10 109.111
H5 C3 H6 110.268 H5 C3 H7 110.603
H6 C3 H7 111.165 H8 C4 H9 110.268
H8 C4 H10 110.603 H9 C4 H10 111.165
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability