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

using model chemistry: mPW1PW91/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at mPW1PW91/6-311G*
 hartrees
Energy at 0K-876.254562
Energy at 298.15K-876.260707
Nuclear repulsion energy221.256560
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 mPW1PW91/6-311G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A 3175 3030 5.68      
2 A 3160 3015 8.74      
3 A 3071 2931 22.93      
4 A 1492 1424 0.49      
5 A 1485 1417 9.37      
6 A 1385 1322 1.18      
7 A 1000 954 9.45      
8 A 992 947 2.02      
9 A 715 682 0.21      
10 A 500 477 0.32      
11 A 234 223 1.84      
12 A 156 149 0.01      
13 A 100 95 1.35      
14 B 3174 3029 11.27      
15 B 3159 3015 6.40      
16 B 3069 2929 25.07      
17 B 1497 1429 24.19      
18 B 1479 1411 13.73      
19 B 1378 1315 2.36      
20 B 999 954 24.37      
21 B 990 945 6.10      
22 B 713 680 2.75      
23 B 262 250 1.95      
24 B 170 162 0.52      

Unscaled Zero Point Vibrational Energy (zpe) 17175.5 cm-1
Scaled (by 0.9544) Zero Point Vibrational Energy (zpe) 16392.3 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 mPW1PW91/6-311G*
ABC
0.27197 0.09155 0.08456

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/6-311G*

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 1.034 -0.494
S2 0.000 -1.034 -0.494
C3 1.217 1.423 0.794
C4 -1.217 -1.423 0.794
H5 1.310 2.510 0.809
H6 0.886 1.085 1.775
H7 2.185 0.985 0.555
H8 -1.310 -2.510 0.809
H9 -0.886 -1.085 1.775
H10 -2.185 -0.985 0.555

Atom - Atom Distances (Å)
  S1 S2 C3 C4 H5 H6 H7 H8 H9 H10
S12.06721.81413.02862.36492.43592.42423.99623.22773.1545
S22.06723.02861.81413.99623.22773.15452.36492.43592.4242
C31.81413.02863.74451.09121.08901.08824.67453.41654.1748
C43.02861.81413.74454.67453.41654.17481.09121.08901.0882
H52.36493.99621.09124.67451.77281.77575.66224.32154.9492
H62.43593.22771.08903.41651.77281.78424.32152.80123.8989
H72.42423.15451.08824.17481.77571.78424.94923.89894.7935
H83.99622.36494.67451.09125.66224.32154.94921.77281.7757
H93.22772.43593.41651.08904.32152.80123.89891.77281.7842
H103.15452.42424.17481.08824.94923.89894.79351.77571.7842

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 102.383 S1 C3 H5 106.298
S1 C3 H6 111.636 S1 C3 H7 110.788
S2 S1 C3 102.383 S2 C4 H8 106.298
S2 C4 H9 111.636 S2 C4 H10 110.788
H5 C3 H6 108.808 H5 C3 H7 109.129
H6 C3 H7 110.067 H8 C4 H9 108.808
H8 C4 H10 109.129 H9 C4 H10 110.067
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S 0.040      
2 S 0.040      
3 C -0.819      
4 C -0.819      
5 H 0.257      
6 H 0.254      
7 H 0.269      
8 H 0.257      
9 H 0.254      
10 H 0.269      


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 2.292 2.292
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -39.117 3.635 0.000
y 3.635 -38.202 0.000
z 0.000 0.000 -41.364
Traceless
 xyz
x 0.666 3.635 0.000
y 3.635 2.039 0.000
z 0.000 0.000 -2.705
Polar
3z2-r2-5.410
x2-y2-0.915
xy3.635
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> 155.993
(<r2>)1/2 12.490