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

using model chemistry: B1B95/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at B1B95/3-21G*
 hartrees
Energy at 0K-872.077437
Energy at 298.15K-872.083581
Nuclear repulsion energy222.171425
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 B1B95/3-21G*
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 3177 3034 3.30      
2 A 3159 3016 7.04      
3 A 3073 2934 14.72      
4 A 1532 1463 1.87      
5 A 1530 1461 10.50      
6 A 1414 1351 0.05      
7 A 1015 970 10.49      
8 A 1009 963 0.84      
9 A 698 666 0.05      
10 A 512 489 0.38      
11 A 236 225 1.50      
12 A 141 135 0.06      
13 A 111 106 1.20      
14 B 3176 3033 6.47      
15 B 3157 3014 2.37      
16 B 3071 2932 12.39      
17 B 1538 1469 25.38      
18 B 1522 1453 18.83      
19 B 1406 1343 0.06      
20 B 1018 972 25.89      
21 B 1003 958 6.40      
22 B 696 664 2.84      
23 B 270 258 1.33      
24 B 159 152 0.49      

Unscaled Zero Point Vibrational Energy (zpe) 17310.3 cm-1
Scaled (by 0.9549) Zero Point Vibrational Energy (zpe) 16529.7 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 B1B95/3-21G*
ABC
0.26711 0.09399 0.08555

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/3-21G*

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 -0.451 0.915 -0.506
S2 0.451 -0.915 -0.506
C3 0.451 1.791 0.814
C4 -0.451 -1.791 0.814
H5 0.062 2.813 0.838
H6 0.279 1.322 1.784
H7 1.519 1.815 0.593
H8 -0.062 -2.813 0.838
H9 -0.279 -1.322 1.784
H10 -1.519 -1.815 0.593

Atom - Atom Distances (Å)
  S1 S2 C3 C4 H5 H6 H7 H8 H9 H10
S12.04031.82353.01102.38182.43812.42853.98223.20643.1302
S22.04033.01101.82353.98223.20643.13022.38182.43812.4285
C31.82353.01103.69431.09401.09141.09064.63313.34184.1148
C43.01101.82353.69434.63313.34184.11481.09401.09141.0906
H52.38183.98221.09404.63311.77941.78325.62814.25624.8966
H62.43813.20641.09143.34181.77941.78894.25622.70253.8066
H72.42853.13021.09064.11481.78321.78894.89663.80664.7327
H83.98222.38184.63311.09405.62814.25624.89661.77941.7832
H93.20642.43813.34181.09144.25622.70253.80661.77941.7889
H103.13022.42854.11481.09064.89663.80664.73271.78321.7889

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 102.249 S1 C3 H5 106.772
S1 C3 H6 111.031 S1 C3 H7 110.357
S2 S1 C3 102.249 S2 C4 H8 106.772
S2 C4 H9 111.031 S2 C4 H10 110.357
H5 C3 H6 109.026 H5 C3 H7 109.428
H6 C3 H7 110.148 H8 C4 H9 109.026
H8 C4 H10 109.428 H9 C4 H10 110.148
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S 0.058      
2 S 0.058      
3 C -0.788      
4 C -0.788      
5 H 0.244      
6 H 0.236      
7 H 0.251      
8 H 0.244      
9 H 0.236      
10 H 0.251      


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 2.281 2.281
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -41.274 1.788 0.000
y 1.788 -35.285 0.000
z 0.000 0.000 -40.723
Traceless
 xyz
x -3.270 1.788 0.000
y 1.788 5.714 0.000
z 0.000 0.000 -2.444
Polar
3z2-r2-4.888
x2-y2-5.989
xy1.788
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.044 -0.246 0.000
y -0.246 10.356 0.000
z 0.000 0.000 6.557


<r2> (average value of r2) Å2
<r2> 153.977
(<r2>)1/2 12.409