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

using model chemistry: mPW1PW91/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at mPW1PW91/3-21G
 hartrees
Energy at 0K-871.833147
Energy at 298.15K-871.838956
Nuclear repulsion energy211.729053
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 mPW1PW91/3-21G
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 3226 3079 3.12      
2 A 3202 3057 4.74      
3 A 3104 2963 11.33      
4 A 1533 1463 0.33      
5 A 1529 1459 14.59      
6 A 1400 1337 0.34      
7 A 1006 960 3.69      
8 A 999 954 6.89      
9 A 659 629 1.84      
10 A 440 420 0.00      
11 A 198 189 1.22      
12 A 118 113 0.03      
13 A 78 74 1.86      
14 B 3226 3079 3.13      
15 B 3202 3056 0.19      
16 B 3103 2962 6.41      
17 B 1538 1468 30.17      
18 B 1522 1453 20.83      
19 B 1393 1329 2.10      
20 B 1010 964 22.95      
21 B 996 951 5.41      
22 B 657 627 1.58      
23 B 229 219 2.08      
24 B 136 130 0.66      

Unscaled Zero Point Vibrational Energy (zpe) 17250.9 cm-1
Scaled (by 0.9546) Zero Point Vibrational Energy (zpe) 16467.7 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 mPW1PW91/3-21G
ABC
0.24105 0.08445 0.07857

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/3-21G

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 1.124 -0.518
S2 0.000 -1.124 -0.518
C3 1.274 1.413 0.841
C4 -1.274 -1.413 0.841
H5 1.408 2.496 0.896
H6 0.897 1.032 1.789
H7 2.208 0.928 0.563
H8 -1.408 -2.496 0.896
H9 -0.897 -1.032 1.789
H10 -2.208 -0.928 0.563

Atom - Atom Distances (Å)
  S1 S2 C3 C4 H5 H6 H7 H8 H9 H10
S12.24871.88573.14802.42182.47772.46654.13393.28333.2028
S22.24873.14801.88574.13393.28333.20282.42182.47772.4665
C31.88573.14803.80561.09231.08911.08854.74103.40494.2057
C43.14801.88573.80564.74103.40494.20571.09231.08911.0885
H52.42184.13391.09234.74101.78891.79135.73104.30784.9913
H62.47773.28331.08913.40491.78891.79834.30782.73523.8720
H72.46653.20281.08854.20571.79131.79834.99133.87204.7909
H84.13392.42184.74101.09235.73104.30784.99131.78891.7913
H93.28332.47773.40491.08914.30782.73523.87201.78891.7983
H103.20282.46654.20571.08854.99133.87204.79091.79131.7983

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 98.803 S1 C3 H5 105.721
S1 C3 H6 109.882 S1 C3 H7 109.100
S2 S1 C3 98.803 S2 C4 H8 105.721
S2 C4 H9 109.882 S2 C4 H10 109.100
H5 C3 H6 110.180 H5 C3 H7 110.451
H6 C3 H7 111.346 H8 C4 H9 110.180
H8 C4 H10 110.451 H9 C4 H10 111.346
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S 0.083      
2 S 0.083      
3 C -0.875      
4 C -0.875      
5 H 0.264      
6 H 0.256      
7 H 0.273      
8 H 0.264      
9 H 0.256      
10 H 0.273      


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 2.633 2.633
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -38.935 3.977 0.000
y 3.977 -38.743 0.000
z 0.000 0.000 -41.662
Traceless
 xyz
x 1.267 3.977 0.000
y 3.977 1.556 0.000
z 0.000 0.000 -2.823
Polar
3z2-r2-5.647
x2-y2-0.193
xy3.977
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> 166.116
(<r2>)1/2 12.889