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

using model chemistry: B3LYP/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at B3LYP/3-21G
 hartrees
Energy at 0K-871.852351
Energy at 298.15K-871.858046
Nuclear repulsion energy209.506756
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 B3LYP/3-21G
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 3201 3089 4.52      
2 A 3177 3066 5.71      
3 A 3086 2977 11.72      
4 A 1533 1479 0.20      
5 A 1527 1473 11.49      
6 A 1387 1339 1.79      
7 A 993 958 2.93      
8 A 985 951 6.06      
9 A 628 606 1.98      
10 A 420 406 0.01      
11 A 191 185 0.99      
12 A 112 108 0.04      
13 A 72 70 1.82      
14 B 3201 3089 5.16      
15 B 3176 3065 0.80      
16 B 3085 2977 8.26      
17 B 1538 1484 25.59      
18 B 1522 1468 16.59      
19 B 1380 1332 6.52      
20 B 996 961 19.83      
21 B 982 948 4.31      
22 B 627 605 1.58      
23 B 222 214 1.89      
24 B 129 125 0.60      

Unscaled Zero Point Vibrational Energy (zpe) 17084.6 cm-1
Scaled (by 0.9649) Zero Point Vibrational Energy (zpe) 16484.9 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 B3LYP/3-21G
ABC
0.23872 0.08184 0.07648

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/3-21G

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 1.137 -0.519
S2 0.000 -1.137 -0.519
C3 1.298 1.444 0.843
C4 -1.298 -1.444 0.843
H5 1.423 2.528 0.885
H6 0.927 1.067 1.795
H7 2.230 0.960 0.558
H8 -1.423 -2.528 0.885
H9 -0.927 -1.067 1.795
H10 -2.230 -0.960 0.558

Atom - Atom Distances (Å)
  S1 S2 C3 C4 H5 H6 H7 H8 H9 H10
S12.27381.90603.19372.43562.49362.48294.17503.32753.2450
S22.27383.19371.90604.17503.32753.24502.43562.49362.4829
C31.90603.19373.88291.09251.08921.08854.81533.48734.2784
C43.19371.90603.88294.81533.48734.27841.09251.08921.0885
H52.43564.17501.09254.81531.79191.79385.80324.39115.0619
H62.49363.32751.08923.48731.79191.80014.39112.82703.9502
H72.48293.24501.08854.27841.79381.80015.06193.95024.8558
H84.17502.43564.81531.09255.80324.39115.06191.79191.7938
H93.32752.49363.48731.08924.39112.82703.95021.79191.8001
H103.24502.48294.27841.08855.06193.95024.85581.79381.8001

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 99.272 S1 C3 H5 105.398
S1 C3 H6 109.691 S1 C3 H7 108.948
S2 S1 C3 99.272 S2 C4 H8 105.398
S2 C4 H9 109.691 S2 C4 H10 108.948
H5 C3 H6 110.434 H5 C3 H7 110.664
H6 C3 H7 111.511 H8 C4 H9 110.434
H8 C4 H10 110.664 H9 C4 H10 111.511
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S 0.070     -0.114
2 S 0.070     -0.108
3 C -0.784     -0.346
4 C -0.784     -0.389
5 H 0.237     0.174
6 H 0.231     0.146
7 H 0.247     0.140
8 H 0.237     0.188
9 H 0.231     0.158
10 H 0.247     0.151


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 2.542 2.542
CHELPG        
AIM        
ESP 0.003 -0.010 2.521 2.521


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -38.941 3.937 0.000
y 3.937 -38.664 0.000
z 0.000 0.000 -41.670
Traceless
 xyz
x 1.226 3.937 0.000
y 3.937 1.642 0.000
z 0.000 0.000 -2.868
Polar
3z2-r2-5.735
x2-y2-0.277
xy3.937
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 11.658 0.001 -0.727
y 0.001 6.574 -0.001
z -0.727 -0.001 6.310


<r2> (average value of r2) Å2
<r2> 169.821
(<r2>)1/2 13.032