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

using model chemistry: MP2/aug-cc-pVDZ

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/aug-cc-pVDZ
 hartrees
Energy at 0K-874.892090
Energy at 298.15K-874.898214
HF Energy-874.301377
Nuclear repulsion energy220.391291
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/aug-cc-pVDZ
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 3189 3059 2.57      
2 A 3172 3042 5.05      
3 A 3067 2941 18.60      
4 A 1458 1398 0.86      
5 A 1450 1391 5.55      
6 A 1331 1276 0.96      
7 A 972 933 1.66      
8 A 967 927 0.80      
9 A 716 687 0.11      
10 A 508 487 0.38      
11 A 232 222 0.94      
12 A 156 149 0.00      
13 A 95 91 1.22      
14 B 3189 3058 5.83      
15 B 3173 3042 5.48      
16 B 3065 2939 19.78      
17 B 1463 1403 12.79      
18 B 1442 1383 9.45      
19 B 1321 1267 6.19      
20 B 972 932 11.56      
21 B 963 924 1.47      
22 B 714 684 1.69      
23 B 263 252 0.88      
24 B 164 157 0.29      

Unscaled Zero Point Vibrational Energy (zpe) 17019.8 cm-1
Scaled (by 0.959) Zero Point Vibrational Energy (zpe) 16322.0 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 MP2/aug-cc-pVDZ
ABC
0.25925 0.09332 0.08501

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/aug-cc-pVDZ

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 1.042 -0.512
S2 0.000 -1.042 -0.512
C3 1.201 1.385 0.824
C4 -1.201 -1.385 0.824
H5 1.300 2.481 0.883
H6 0.830 1.005 1.787
H7 2.173 0.937 0.581
H8 -1.300 -2.481 0.883
H9 -0.830 -1.005 1.787
H10 -2.173 -0.937 0.581

Atom - Atom Distances (Å)
  S1 S2 C3 C4 H5 H6 H7 H8 H9 H10
S12.08421.82923.02022.38912.44452.43524.00633.18813.1360
S22.08423.02021.82924.00633.18813.13602.38912.44452.4352
C31.82923.02023.66671.10181.09931.09844.60523.28074.1030
C43.02021.82923.66674.60523.28074.10301.10181.09931.0984
H52.38914.00631.10184.60521.79371.79975.60234.18404.8823
H62.44453.18811.09933.28071.79371.80614.18402.60653.7738
H72.43523.13601.09844.10301.79971.80614.88233.77384.7330
H84.00632.38914.60521.10185.60234.18404.88231.79371.7997
H93.18812.44453.28071.09934.18402.60653.77381.79371.8061
H103.13602.43524.10301.09844.88233.77384.73301.79971.8061

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 100.818 S1 C3 H5 106.546
S1 C3 H6 110.689 S1 C3 H7 110.048
S2 S1 C3 100.818 S2 C4 H8 106.546
S2 C4 H9 110.689 S2 C4 H10 110.048
H5 C3 H6 109.159 H5 C3 H7 109.772
H6 C3 H7 110.539 H8 C4 H9 109.159
H8 C4 H10 109.772 H9 C4 H10 110.539
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability