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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-872.075684
Energy at 298.15K-872.081708
Nuclear repulsion energy219.691724
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 3158 3038 5.19      
2 A 3139 3019 7.80      
3 A 3061 2944 14.45      
4 A 1541 1483 0.77      
5 A 1533 1475 9.22      
6 A 1411 1357 0.18      
7 A 1009 970 9.05      
8 A 1006 968 1.36      
9 A 667 641 0.08      
10 A 483 465 0.32      
11 A 230 221 1.28      
12 A 131 126 0.10      
13 A 102 98 1.28      
14 B 3158 3038 8.16      
15 B 3138 3019 3.13      
16 B 3059 2943 16.25      
17 B 1546 1487 22.84      
18 B 1527 1469 16.02      
19 B 1404 1351 0.92      
20 B 1014 976 23.78      
21 B 999 961 5.15      
22 B 665 640 2.26      
23 B 265 255 1.18      
24 B 147 141 0.49      

Unscaled Zero Point Vibrational Energy (zpe) 17196.1 cm-1
Scaled (by 0.962) Zero Point Vibrational Energy (zpe) 16542.6 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
0.26579 0.09069 0.08307

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 1.033 -0.505
S2 0.000 -1.033 -0.505
C3 1.220 1.442 0.813
C4 -1.220 -1.442 0.813
H5 1.319 2.533 0.815
H6 0.864 1.112 1.792
H7 2.186 0.987 0.589
H8 -1.319 -2.533 0.815
H9 -0.864 -1.112 1.792
H10 -2.186 -0.987 0.589

Atom - Atom Distances (Å)
  S1 S2 C3 C4 H5 H6 H7 H8 H9 H10
S12.06571.84173.05782.39412.45462.44514.02443.25903.1714
S22.06573.05781.84174.02443.25903.17142.39412.45462.4451
C31.84173.05783.77771.09521.09221.09154.71683.43864.1898
C43.05781.84173.77774.71683.43864.18981.09521.09221.0915
H52.39414.02441.09524.71681.78321.78645.71194.35994.9732
H62.45463.25901.09223.43861.78321.79184.35992.81673.8933
H72.44513.17141.09154.18981.78641.79184.97323.89334.7979
H84.02442.39414.71681.09525.71194.35994.97321.78321.7864
H93.25902.45463.43861.09224.35992.81673.89331.78321.7918
H103.17142.44514.18981.09154.97323.89334.79791.78641.7918

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 102.845 S1 C3 H5 106.417
S1 C3 H6 110.980 S1 C3 H7 110.304
S2 S1 C3 102.845 S2 C4 H8 106.417
S2 C4 H9 110.980 S2 C4 H10 110.304
H5 C3 H6 109.221 H5 C3 H7 109.554
H6 C3 H7 110.279 H8 C4 H9 109.221
H8 C4 H10 109.554 H9 C4 H10 110.279
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 0.051      
2 S 0.051      
3 C -0.729      
4 C -0.729      
5 H 0.225      
6 H 0.219      
7 H 0.233      
8 H 0.225      
9 H 0.219      
10 H 0.233      


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 2.230 2.230
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -38.845 3.484 0.000
y 3.484 -37.977 0.000
z 0.000 0.000 -40.929
Traceless
 xyz
x 0.608 3.484 0.000
y 3.484 1.910 0.000
z 0.000 0.000 -2.518
Polar
3z2-r2-5.036
x2-y2-0.867
xy3.484
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 10.613 0.000 -0.431
y 0.000 6.567 -0.000
z -0.431 -0.000 6.117


<r2> (average value of r2) Å2
<r2> 157.779
(<r2>)1/2 12.561