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

using model chemistry: MP2/CEP-121G

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-121G
 hartrees
Energy at 0K-34.534111
Energy at 298.15K-34.539997
HF Energy-34.241593
Nuclear repulsion energy62.395950
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-121G
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 3136 3061 7.54      
2 A 3122 3047 12.12      
3 A 2995 2923 30.97      
4 A 1479 1443 0.16      
5 A 1464 1429 8.73      
6 A 1408 1374 3.77      
7 A 1002 978 5.32      
8 A 994 970 2.26      
9 A 663 647 0.41      
10 A 428 417 0.00      
11 A 199 194 1.27      
12 A 145 142 0.04      
13 A 76 74 1.58      
14 B 3136 3060 18.98      
15 B 3121 3046 11.45      
16 B 2994 2922 31.13      
17 B 1482 1447 17.77      
18 B 1458 1423 12.11      
19 B 1402 1368 6.71      
20 B 999 975 9.41      
21 B 996 973 9.80      
22 B 660 644 0.51      
23 B 222 217 1.87      
24 B 159 155 0.47      

Unscaled Zero Point Vibrational Energy (zpe) 16869.2 cm-1
Scaled (by 0.976) Zero Point Vibrational Energy (zpe) 16464.3 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-121G
ABC
0.23754 0.08209 0.07643

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/CEP-121G

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 1.133 -0.523
S2 0.000 -1.133 -0.523
C3 1.292 1.446 0.846
C4 -1.292 -1.446 0.846
H5 1.414 2.537 0.909
H6 0.934 1.054 1.807
H7 2.243 0.973 0.570
H8 -1.414 -2.537 0.909
H9 -0.934 -1.054 1.807
H10 -2.243 -0.973 0.570

Atom - Atom Distances (Å)
  S1 S2 C3 C4 H5 H6 H7 H8 H9 H10
S12.26541.90813.19252.45382.51132.49984.18533.32873.2643
S22.26543.19251.90814.18533.32873.26432.45382.51132.4998
C31.90813.19253.87851.09991.09841.09724.81583.48254.2922
C43.19251.90813.87854.81583.48254.29221.09991.09841.0972
H52.45384.18531.09994.81581.79941.80305.80904.38325.0798
H62.51133.32871.09843.48251.79941.80324.38322.81593.9661
H72.49983.26431.09724.29221.80301.80325.07983.96614.8894
H84.18532.45384.81581.09995.80904.38325.07981.79941.8030
H93.32872.51133.48251.09844.38322.81593.96611.79941.8032
H103.26432.49984.29221.09725.07983.96614.88941.80301.8032

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 99.446 S1 C3 H5 106.188
S1 C3 H6 110.373 S1 C3 H7 109.592
S2 S1 C3 99.446 S2 C4 H8 106.188
S2 C4 H9 110.373 S2 C4 H10 109.592
H5 C3 H6 109.882 H5 C3 H7 110.295
H6 C3 H7 110.427 H8 C4 H9 109.882
H8 C4 H10 110.295 H9 C4 H10 110.427
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability