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

using model chemistry: mPW1PW91/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at mPW1PW91/6-31G*
 hartrees
Energy at 0K-876.191411
Energy at 298.15K-876.197521
Nuclear repulsion energy221.029394
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 mPW1PW91/6-31G*
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 3199 3034 4.44      
2 A 3184 3020 7.21      
3 A 3091 2931 16.52      
4 A 1508 1430 0.45      
5 A 1497 1419 8.17      
6 A 1392 1320 1.29      
7 A 1001 949 7.47      
8 A 996 945 1.82      
9 A 719 682 0.11      
10 A 517 490 0.28      
11 A 233 221 1.71      
12 A 145 138 0.03      
13 A 101 96 1.52      
14 B 3199 3034 6.88      
15 B 3184 3019 2.95      
16 B 3090 2930 18.32      
17 B 1512 1434 21.65      
18 B 1490 1413 13.06      
19 B 1385 1313 2.83      
20 B 1002 950 21.49      
21 B 991 940 3.90      
22 B 717 680 2.67      
23 B 262 249 1.61      
24 B 158 150 0.51      

Unscaled Zero Point Vibrational Energy (zpe) 17286.4 cm-1
Scaled (by 0.9483) Zero Point Vibrational Energy (zpe) 16392.7 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 mPW1PW91/6-31G*
ABC
0.27400 0.09094 0.08388

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/6-31G*

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 1.029 -0.493
S2 0.000 -1.029 -0.493
C3 1.216 1.444 0.794
C4 -1.216 -1.444 0.794
H5 1.304 2.534 0.789
H6 0.881 1.122 1.781
H7 2.188 1.005 0.565
H8 -1.304 -2.534 0.789
H9 -0.881 -1.122 1.781
H10 -2.188 -1.005 0.565

Atom - Atom Distances (Å)
  S1 S2 C3 C4 H5 H6 H7 H8 H9 H10
S12.05761.81853.04142.36872.44112.43044.00503.25183.1690
S22.05763.04141.81854.00503.25183.16902.36872.44112.4304
C31.81853.04143.77561.09361.09141.09084.70923.45784.1994
C43.04141.81853.77564.70923.45784.19941.09361.09141.0908
H52.36874.00501.09364.70921.77731.78035.70004.37324.9768
H62.44113.25181.09143.45781.77731.78864.37322.85293.9269
H72.43043.16901.09084.19941.78031.78864.97683.92694.8150
H84.00502.36874.70921.09365.70004.37324.97681.77731.7803
H93.25182.44113.45781.09144.37322.85293.92691.77731.7886
H103.16902.43044.19941.09084.97683.92694.81501.78031.7886

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 103.204 S1 C3 H5 106.175
S1 C3 H6 111.593 S1 C3 H7 110.819
S2 S1 C3 103.204 S2 C4 H8 106.175
S2 C4 H9 111.593 S2 C4 H10 110.819
H5 C3 H6 108.861 H5 C3 H7 109.182
H6 C3 H7 110.095 H8 C4 H9 108.861
H8 C4 H10 109.182 H9 C4 H10 110.095
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S 0.027      
2 S 0.027      
3 C -0.672      
4 C -0.672      
5 H 0.214      
6 H 0.208      
7 H 0.222      
8 H 0.214      
9 H 0.208      
10 H 0.222      


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 2.320 2.320
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -38.352 3.726 0.000
y 3.726 -37.541 0.000
z 0.000 0.000 -40.621
Traceless
 xyz
x 0.729 3.726 0.000
y 3.726 1.945 0.000
z 0.000 0.000 -2.674
Polar
3z2-r2-5.349
x2-y2-0.810
xy3.726
xz0.000
yz0.000


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


<r2> (average value of r2) Å2
<r2> 156.377
(<r2>)1/2 12.505