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

using model chemistry: B3PW91/cc-pVDZ

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/cc-pVDZ
 hartrees
Energy at 0K-876.121136
Energy at 298.15K-876.127172
Nuclear repulsion energy219.748926
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/cc-pVDZ
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 3170 3059 4.01      
2 A 3154 3044 5.53      
3 A 3050 2943 15.54      
4 A 1443 1392 0.32      
5 A 1430 1380 6.90      
6 A 1315 1269 1.34      
7 A 955 922 5.06      
8 A 951 918 0.66      
9 A 698 674 0.05      
10 A 503 486 0.49      
11 A 229 221 1.18      
12 A 142 137 0.19      
13 A 100 97 1.31      
14 B 3170 3059 5.27      
15 B 3154 3043 2.47      
16 B 3048 2942 22.78      
17 B 1447 1396 18.55      
18 B 1425 1375 11.74      
19 B 1307 1262 7.11      
20 B 956 923 16.03      
21 B 946 913 3.11      
22 B 698 673 4.28      
23 B 259 250 1.41      
24 B 151 146 0.44      

Unscaled Zero Point Vibrational Energy (zpe) 16850.0 cm-1
Scaled (by 0.965) Zero Point Vibrational Energy (zpe) 16260.3 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 B3PW91/cc-pVDZ
ABC
0.27338 0.08933 0.08297

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/cc-pVDZ

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 1.037 -0.490
S2 0.000 -1.037 -0.490
C3 1.235 1.452 0.788
C4 -1.235 -1.452 0.788
H5 1.320 2.550 0.773
H6 0.905 1.131 1.786
H7 2.209 1.008 0.544
H8 -1.320 -2.550 0.773
H9 -0.905 -1.131 1.786
H10 -2.209 -1.008 0.544

Atom - Atom Distances (Å)
  S1 S2 C3 C4 H5 H6 H7 H8 H9 H10
S12.07411.82463.05832.37232.45082.43964.02573.27103.1830
S22.07413.05831.82464.02573.27103.18302.37232.45082.4396
C31.82463.05833.81231.10151.09901.09854.74843.49994.2394
C43.05831.82463.81234.74843.49994.23941.10151.09901.0985
H52.37234.02571.10154.74841.79191.79515.74344.41955.0169
H62.45083.27101.09903.49991.79191.80514.41952.89773.9770
H72.43963.18301.09854.23941.79511.80515.01693.97704.8566
H84.02572.37234.74841.10155.74344.41955.01691.79191.7951
H93.27102.45083.49991.09904.41952.89773.97701.79191.8051
H103.18302.43964.23941.09855.01693.97704.85661.79511.8051

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 103.147 S1 C3 H5 105.665
S1 C3 H6 111.492 S1 C3 H7 110.679
S2 S1 C3 103.147 S2 C4 H8 105.665
S2 C4 H9 111.492 S2 C4 H10 110.679
H5 C3 H6 109.040 H5 C3 H7 109.366
H6 C3 H7 110.461 H8 C4 H9 109.040
H8 C4 H10 109.366 H9 C4 H10 110.461
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S -0.074      
2 S -0.074      
3 C -0.182      
4 C -0.182      
5 H 0.084      
6 H 0.081      
7 H 0.090      
8 H 0.084      
9 H 0.081      
10 H 0.090      


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 2.056 2.056
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -38.404 3.370 0.000
y 3.370 -37.158 0.000
z 0.000 0.000 -40.502
Traceless
 xyz
x 0.426 3.370 0.000
y 3.370 2.296 0.000
z 0.000 0.000 -2.721
Polar
3z2-r2-5.443
x2-y2-1.247
xy3.370
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> 157.956
(<r2>)1/2 12.568