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

using model chemistry: B3PW91/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at B3PW91/6-31+G**
 hartrees
Energy at 0K-876.090333
Energy at 298.15K-876.096408
Nuclear repulsion energy220.289477
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 B3PW91/6-31+G**
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 3172 3045 4.79      
2 A 3158 3032 6.13      
3 A 3062 2940 18.02      
4 A 1474 1415 0.44      
5 A 1462 1404 9.05      
6 A 1361 1307 0.61      
7 A 981 942 5.22      
8 A 977 938 0.69      
9 A 704 676 0.01      
10 A 504 484 0.40      
11 A 230 221 1.55      
12 A 146 140 0.07      
13 A 101 97 1.55      
14 B 3172 3045 6.29      
15 B 3157 3031 3.42      
16 B 3060 2938 22.75      
17 B 1478 1419 23.78      
18 B 1456 1398 14.40      
19 B 1355 1301 1.85      
20 B 982 943 16.60      
21 B 971 932 2.32      
22 B 702 674 3.43      
23 B 259 249 1.30      
24 B 156 150 0.53      

Unscaled Zero Point Vibrational Energy (zpe) 17039.9 cm-1
Scaled (by 0.9601) Zero Point Vibrational Energy (zpe) 16360.0 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 B3PW91/6-31+G**
ABC
0.27489 0.08973 0.08308

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-31+G**

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 1.032 -0.491
S2 0.000 -1.032 -0.491
C3 1.226 1.458 0.789
C4 -1.226 -1.458 0.789
H5 1.313 2.549 0.773
H6 0.897 1.144 1.783
H7 2.198 1.017 0.557
H8 -1.313 -2.549 0.773
H9 -0.897 -1.144 1.783
H10 -2.198 -1.017 0.557

Atom - Atom Distances (Å)
  S1 S2 C3 C4 H5 H6 H7 H8 H9 H10
S12.06471.82283.05652.37072.44642.43484.01813.27263.1826
S22.06473.05651.82284.01813.27263.18262.37072.44642.4348
C31.82283.05653.80961.09451.09221.09184.74323.50204.2310
C43.05651.82283.80964.74323.50204.23101.09451.09221.0918
H52.37074.01811.09454.74321.77881.78185.73394.42055.0086
H62.44643.27261.09223.50201.77881.79124.42052.90793.9687
H72.43483.18261.09184.23101.78181.79125.00863.96874.8433
H84.01812.37074.74321.09455.73394.42055.00861.77881.7818
H93.27262.44643.50201.09224.42052.90793.96871.77881.7912
H103.18262.43484.23101.09185.00863.96874.84331.78181.7912

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 103.498 S1 C3 H5 105.996
S1 C3 H6 111.655 S1 C3 H7 110.805
S2 S1 C3 103.498 S2 C4 H8 105.996
S2 C4 H9 111.655 S2 C4 H10 110.805
H5 C3 H6 108.876 H5 C3 H7 109.174
H6 C3 H7 110.206 H8 C4 H9 108.876
H8 C4 H10 109.174 H9 C4 H10 110.206
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S 0.053      
2 S 0.053      
3 C -0.654      
4 C -0.654      
5 H 0.196      
6 H 0.196      
7 H 0.209      
8 H 0.196      
9 H 0.196      
10 H 0.209      


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 2.253 2.253
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -38.862 3.745 0.000
y 3.745 -37.910 0.000
z 0.000 0.000 -41.128
Traceless
 xyz
x 0.657 3.745 0.000
y 3.745 2.085 0.000
z 0.000 0.000 -2.742
Polar
3z2-r2-5.484
x2-y2-0.952
xy3.745
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> 157.937
(<r2>)1/2 12.567