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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-874.809069
Energy at 298.15K-874.815265
HF Energy-874.246828
Nuclear repulsion energy220.992258
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 3186 3034 4.70      
2 A 3170 3019 8.40      
3 A 3083 2936 19.56      
4 A 1527 1454 0.51      
5 A 1514 1441 6.78      
6 A 1426 1358 1.60      
7 A 1025 976 5.03      
8 A 1019 970 2.70      
9 A 738 702 0.11      
10 A 520 495 0.14      
11 A 240 228 1.49      
12 A 156 149 0.00      
13 A 98 93 1.29      
14 B 3185 3033 10.97      
15 B 3170 3019 7.15      
16 B 3082 2935 19.56      
17 B 1530 1457 16.99      
18 B 1507 1435 9.74      
19 B 1419 1351 4.15      
20 B 1025 976 17.36      
21 B 1016 968 2.80      
22 B 733 698 1.16      
23 B 270 257 1.19      
24 B 168 160 0.39      

Unscaled Zero Point Vibrational Energy (zpe) 17401.7 cm-1
Scaled (by 0.9523) Zero Point Vibrational Energy (zpe) 16571.7 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 QCISD/6-31G*
ABC
0.26710 0.09234 0.08465

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 1.207 1.414 0.807
C4 -1.207 -1.414 0.807
H5 1.297 2.505 0.845
H6 0.865 1.054 1.782
H7 2.183 0.980 0.573
H8 -1.297 -2.505 0.845
H9 -0.865 -1.054 1.782
H10 -2.183 -0.980 0.573

Atom - Atom Distances (Å)
  S1 S2 C3 C4 H5 H6 H7 H8 H9 H10
S12.06671.82123.02672.38032.44292.43414.00273.21293.1584
S22.06673.02671.82124.00273.21293.15842.38032.44292.4341
C31.82123.02673.71831.09601.09421.09324.65123.36674.1568
C43.02671.82123.71834.65123.36674.15681.09601.09421.0932
H52.38034.00271.09604.65121.78091.78495.64264.26864.9329
H62.44293.21291.09423.36671.78091.78984.26862.72693.8588
H72.43413.15841.09324.15681.78491.78984.93293.85884.7858
H84.00272.38034.65121.09605.64264.26864.93291.78091.7849
H93.21292.44293.36671.09424.26862.72693.85881.78091.7898
H103.15842.43414.15681.09324.93293.85884.78581.78491.7898

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 102.058 S1 C3 H5 106.708
S1 C3 H6 111.393 S1 C3 H7 110.784
S2 S1 C3 102.058 S2 C4 H8 106.708
S2 C4 H9 111.393 S2 C4 H10 110.784
H5 C3 H6 108.813 H5 C3 H7 109.239
H6 C3 H7 109.817 H8 C4 H9 108.813
H8 C4 H10 109.239 H9 C4 H10 109.817
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability