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

using model chemistry: HF/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 HF/6-31G**
 hartrees
Energy at 0K-874.257358
Energy at 298.15K-874.263750
Nuclear repulsion energy221.748087
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 HF/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 3314 2991 7.94      
2 A 3297 2976 9.99      
3 A 3209 2896 25.83      
4 A 1608 1451 0.29      
5 A 1597 1441 6.57      
6 A 1501 1355 4.32      
7 A 1080 974 6.15      
8 A 1076 972 0.43      
9 A 773 698 1.35      
10 A 557 503 0.29      
11 A 254 229 1.72      
12 A 168 152 0.01      
13 A 102 92 1.74      
14 B 3313 2991 14.10      
15 B 3295 2974 8.59      
16 B 3207 2895 30.06      
17 B 1612 1455 16.61      
18 B 1591 1436 9.09      
19 B 1493 1348 10.80      
20 B 1083 978 15.70      
21 B 1068 964 1.39      
22 B 765 691 1.36      
23 B 285 257 1.41      
24 B 177 160 0.44      

Unscaled Zero Point Vibrational Energy (zpe) 18212.4 cm-1
Scaled (by 0.9026) Zero Point Vibrational Energy (zpe) 16438.5 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 HF/6-31G**
ABC
0.27587 0.09134 0.08436

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/6-31G**

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 1.026 -0.491
S2 0.000 -1.026 -0.491
C3 1.217 1.440 0.790
C4 -1.217 -1.440 0.790
H5 1.295 2.521 0.798
H6 0.892 1.104 1.765
H7 2.181 1.012 0.553
H8 -1.295 -2.521 0.798
H9 -0.892 -1.104 1.765
H10 -2.181 -1.012 0.553

Atom - Atom Distances (Å)
  S1 S2 C3 C4 H5 H6 H7 H8 H9 H10
S12.05281.81483.03402.36022.42752.41783.98993.22863.1625
S22.05283.03401.81483.98993.22863.16252.36022.42752.4178
C31.81483.03403.77051.08351.08141.08064.69003.44504.1966
C43.03401.81483.77054.69003.44504.19661.08351.08141.0806
H52.36023.98991.08354.69001.76251.76605.66774.34234.9619
H62.42753.22861.08143.44501.76251.77144.34232.83813.9225
H72.41783.16251.08064.19661.76601.77144.96193.92254.8081
H83.98992.36024.69001.08355.66774.34234.96191.76251.7660
H93.22862.42753.44501.08144.34232.83813.92251.76251.7714
H103.16252.41784.19661.08064.96193.92254.80811.76601.7714

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 103.169 S1 C3 H5 106.290
S1 C3 H6 111.362 S1 C3 H7 110.669
S2 S1 C3 103.169 S2 C4 H8 106.290
S2 C4 H9 111.362 S2 C4 H10 110.669
H5 C3 H6 109.005 H5 C3 H7 109.377
H6 C3 H7 110.041 H8 C4 H9 109.005
H8 C4 H10 109.377 H9 C4 H10 110.041
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S 0.025 -0.061    
2 S 0.025 0.056    
3 C -0.490 0.085    
4 C -0.490 0.065    
5 H 0.154 -0.061    
6 H 0.147 0.056    
7 H 0.163 0.085    
8 H 0.154 0.065    
9 H 0.147 -0.146    
10 H 0.163 -0.146    


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 2.390 2.390
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -39.138 3.853 0.000
y 3.853 -38.551 0.000
z 0.000 0.000 -41.502
Traceless
 xyz
x 0.889 3.853 0.000
y 3.853 1.769 0.000
z 0.000 0.000 -2.658
Polar
3z2-r2-5.316
x2-y2-0.586
xy3.853
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 10.540 0.000 -0.381
y 0.000 6.844 0.000
z -0.381 0.000 6.460


<r2> (average value of r2) Å2
<r2> 156.152
(<r2>)1/2 12.496