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

using model chemistry: QCISD/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 QCISD/6-311G*
 hartrees
Energy at 0K-874.896959
Energy at 298.15K-874.903213
HF Energy-874.305561
Nuclear repulsion energy221.242429
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/6-311G*
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 3153 3018 5.01      
2 A 3139 3005 8.68      
3 A 3054 2924 24.38      
4 A 1502 1438 0.49      
5 A 1496 1432 8.15      
6 A 1419 1359 1.34      
7 A 1021 978 7.37      
8 A 1012 969 2.56      
9 A 733 702 0.23      
10 A 500 479 0.18      
11 A 243 233 1.56      
12 A 172 165 0.07      
13 A 100 95 1.13      
14 B 3152 3018 12.94      
15 B 3138 3004 10.11      
16 B 3052 2922 23.32      
17 B 1507 1443 19.81      
18 B 1487 1424 11.31      
19 B 1411 1351 2.81      
20 B 1019 975 20.97      
21 B 1013 970 5.28      
22 B 730 699 1.42      
23 B 272 260 1.48      
24 B 185 177 0.38      

Unscaled Zero Point Vibrational Energy (zpe) 17253.6 cm-1
Scaled (by 0.9574) Zero Point Vibrational Energy (zpe) 16518.6 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/6-311G*
ABC
0.26379 0.09336 0.08551

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

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 1.039 -0.505
S2 0.000 -1.039 -0.505
C3 1.204 1.386 0.811
C4 -1.204 -1.386 0.811
H5 1.307 2.475 0.869
H6 0.856 1.014 1.778
H7 2.174 0.945 0.573
H8 -1.307 -2.475 0.869
H9 -0.856 -1.014 1.778
H10 -2.174 -0.945 0.573

Atom - Atom Distances (Å)
  S1 S2 C3 C4 H5 H6 H7 H8 H9 H10
S12.07781.81713.01042.37912.43882.42833.99303.18753.1343
S22.07783.01041.81713.99303.18753.13432.37912.43882.4283
C31.81713.01043.67161.09491.09301.09204.60593.30724.1106
C43.01041.81713.67164.60593.30724.11061.09491.09301.0920
H52.37913.99301.09494.60591.77861.78275.59744.20414.8886
H62.43883.18751.09303.30721.77861.78684.20412.65383.8038
H72.42833.13431.09204.11061.78271.78684.88863.80384.7404
H83.99302.37914.60591.09495.59744.20414.88861.77861.7827
H93.18752.43883.30721.09304.20412.65383.80381.77861.7868
H103.13432.42834.11061.09204.88863.80384.74041.78271.7868

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 101.021 S1 C3 H5 106.945
S1 C3 H6 111.427 S1 C3 H7 110.687
S2 S1 C3 101.021 S2 C4 H8 106.945
S2 C4 H9 111.427 S2 C4 H10 110.687
H5 C3 H6 108.771 H5 C3 H7 109.214
H6 C3 H7 109.718 H8 C4 H9 108.771
H8 C4 H10 109.214 H9 C4 H10 109.718
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability