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

using model chemistry: MP2/CEP-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 MP2/CEP-31G*
 hartrees
Energy at 0K-34.834446
Energy at 298.15K-34.840653
HF Energy-34.341493
Nuclear repulsion energy64.635307
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/CEP-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 3217 3054 9.35      
2 A 3202 3040 10.39      
3 A 3093 2936 28.77      
4 A 1498 1422 0.28      
5 A 1484 1409 7.54      
6 A 1400 1329 2.71      
7 A 1004 953 5.85      
8 A 1001 950 1.91      
9 A 737 700 0.23      
10 A 532 505 0.33      
11 A 239 227 1.34      
12 A 165 156 0.00      
13 A 97 92 1.49      
14 B 3217 3054 17.57      
15 B 3202 3040 15.20      
16 B 3091 2935 31.85      
17 B 1502 1426 16.89      
18 B 1477 1402 11.09      
19 B 1392 1321 6.43      
20 B 1007 956 22.08      
21 B 995 945 3.40      
22 B 734 696 1.50      
23 B 269 255 1.30      
24 B 178 169 0.46      

Unscaled Zero Point Vibrational Energy (zpe) 17364.3 cm-1
Scaled (by 0.9494) Zero Point Vibrational Energy (zpe) 16485.7 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/CEP-31G*
ABC
0.26328 0.09156 0.08413

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/CEP-31G*

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 1.037 -0.504
S2 0.000 -1.037 -0.504
C3 1.224 1.411 0.811
C4 -1.224 -1.411 0.811
H5 1.315 2.511 0.845
H6 0.879 1.045 1.792
H7 2.201 0.967 0.564
H8 -1.315 -2.511 0.845
H9 -0.879 -1.045 1.792
H10 -2.201 -0.967 0.564

Atom - Atom Distances (Å)
  S1 S2 C3 C4 H5 H6 H7 H8 H9 H10
S12.07431.83473.03632.39182.45852.44734.01733.22193.1626
S22.07433.03631.83474.01733.22193.16262.39182.45852.4473
C31.83473.03633.73541.10461.10231.10124.67203.37904.1768
C43.03631.83473.73544.67203.37904.17681.10461.10231.1012
H52.39184.01731.10464.67201.79871.80235.66904.28474.9536
H62.45853.22191.10233.37901.79871.80604.28472.73173.8789
H72.44733.16261.10124.17681.80231.80604.95363.87894.8082
H84.01732.39184.67201.10465.66904.28474.95361.79871.8023
H93.22192.45853.37901.10234.28472.73173.87891.79871.8060
H103.16262.44734.17681.10124.95363.87894.80821.80231.8060

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 101.751 S1 C3 H5 106.251
S1 C3 H6 111.205 S1 C3 H7 110.434
S2 S1 C3 101.751 S2 C4 H8 106.251
S2 C4 H9 111.205 S2 C4 H10 110.434
H5 C3 H6 109.183 H5 C3 H7 109.587
H6 C3 H7 110.094 H8 C4 H9 109.183
H8 C4 H10 109.587 H9 C4 H10 110.094
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability