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

using model chemistry: QCISD/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 QCISD/6-31G**
 hartrees
Energy at 0K-874.857887
Energy at 298.15K-874.864100
HF Energy-874.256974
Nuclear repulsion energy221.303828
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 QCISD/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 3230 3040 5.02      
2 A 3215 3026 9.24      
3 A 3121 2938 21.01      
4 A 1535 1445 0.72      
5 A 1520 1431 5.01      
6 A 1428 1345 3.33      
7 A 1025 965 3.66      
8 A 1017 958 2.78      
9 A 737 694 0.10      
10 A 520 490 0.12      
11 A 239 225 1.46      
12 A 158 149 0.00      
13 A 98 92 1.13      
14 B 3229 3040 12.85      
15 B 3214 3026 8.86      
16 B 3119 2936 20.89      
17 B 1539 1449 14.03      
18 B 1514 1425 7.41      
19 B 1421 1337 8.01      
20 B 1023 963 14.81      
21 B 1016 956 2.08      
22 B 733 690 1.04      
23 B 269 254 1.09      
24 B 169 159 0.33      

Unscaled Zero Point Vibrational Energy (zpe) 17544.1 cm-1
Scaled (by 0.9414) Zero Point Vibrational Energy (zpe) 16516.0 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 QCISD/6-31G**
ABC
0.26713 0.09266 0.08489

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

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 1.033 -0.503
S2 0.000 -1.033 -0.503
C3 1.205 1.410 0.808
C4 -1.205 -1.410 0.808
H5 1.294 2.495 0.849
H6 0.864 1.048 1.776
H7 2.176 0.979 0.574
H8 -1.294 -2.495 0.849
H9 -0.864 -1.048 1.776
H10 -2.176 -0.979 0.574

Atom - Atom Distances (Å)
  S1 S2 C3 C4 H5 H6 H7 H8 H9 H10
S12.06651.81993.02282.37442.43682.42863.99373.20443.1534
S22.06653.02281.81993.99373.20443.15342.37442.43682.4286
C31.81993.02283.70911.08981.08821.08724.63583.35504.1462
C43.02281.81993.70914.63583.35504.14621.08981.08821.0872
H52.37443.99371.08984.63581.77141.77545.62074.25014.9173
H62.43683.20441.08823.35501.77141.78024.25012.71593.8458
H72.42863.15341.08724.14621.77541.78024.91733.84584.7719
H83.99372.37444.63581.08985.62074.25014.91731.77141.7754
H93.20442.43683.35501.08824.25012.71593.84581.77141.7802
H103.15342.42864.14621.08724.91733.84584.77191.77541.7802

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 101.932 S1 C3 H5 106.672
S1 C3 H6 111.349 S1 C3 H7 110.780
S2 S1 C3 101.932 S2 C4 H8 106.672
S2 C4 H9 111.349 S2 C4 H10 110.780
H5 C3 H6 108.838 H5 C3 H7 109.283
H6 C3 H7 109.832 H8 C4 H9 108.838
H8 C4 H10 109.283 H9 C4 H10 109.832
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability