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

using model chemistry: HF/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at HF/6-31G*
 hartrees
Energy at 0K-874.247674
Energy at 298.15K-874.254063
HF Energy-874.247674
Nuclear repulsion energy221.749700
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 HF/6-31G*
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 3333 2994 8.03      
2 A 3315 2979 10.17      
3 A 3232 2904 26.46      
4 A 1625 1460 0.40      
5 A 1615 1451 6.25      
6 A 1518 1364 5.02      
7 A 1087 977 6.50      
8 A 1085 975 0.34      
9 A 774 696 1.40      
10 A 557 501 0.29      
11 A 254 229 1.70      
12 A 169 152 0.01      
13 A 103 92 1.73      
14 B 3332 2994 14.28      
15 B 3314 2978 8.76      
16 B 3230 2902 31.39      
17 B 1628 1463 16.23      
18 B 1609 1446 9.11      
19 B 1510 1357 11.89      
20 B 1091 980 15.85      
21 B 1076 967 1.38      
22 B 767 689 1.37      
23 B 285 256 1.36      
24 B 178 160 0.43      

Unscaled Zero Point Vibrational Energy (zpe) 18342.6 cm-1
Scaled (by 0.8985) Zero Point Vibrational Energy (zpe) 16480.8 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 HF/6-31G*
ABC
0.27535 0.09143 0.08442

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

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 -0.455 0.920 -0.492
S2 0.455 -0.920 -0.492
C3 0.455 1.828 0.791
C4 -0.455 -1.828 0.791
H5 0.049 2.833 0.800
H6 0.312 1.383 1.766
H7 1.508 1.870 0.555
H8 -0.049 -2.833 0.800
H9 -0.312 -1.383 1.766
H10 -1.508 -1.870 0.555

Atom - Atom Distances (Å)
  S1 S2 C3 C4 H5 H6 H7 H8 H9 H10
S12.05271.81553.03292.36222.42832.41883.98963.22793.1609
S22.05273.03291.81553.98963.22793.16092.36222.42832.4188
C31.81553.03293.76751.08341.08121.08054.68793.44184.1932
C43.03291.81553.76754.68793.44184.19321.08341.08121.0805
H52.36223.98961.08344.68791.76191.76525.66624.33954.9597
H62.42833.22791.08123.44181.76191.77034.33952.83463.9186
H72.41883.16091.08054.19321.76521.77034.95973.91864.8047
H83.98962.36224.68791.08345.66624.33954.95971.76191.7652
H93.22792.42833.44181.08124.33952.83463.91861.76191.7703
H103.16092.41884.19321.08054.95973.91864.80471.76521.7703

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 103.099 S1 C3 H5 106.393
S1 C3 H6 111.391 S1 C3 H7 110.710
S2 S1 C3 103.099 S2 C4 H8 106.393
S2 C4 H9 111.391 S2 C4 H10 110.710
H5 C3 H6 108.970 H5 C3 H7 109.328
H6 C3 H7 109.956 H8 C4 H9 108.970
H8 C4 H10 109.328 H9 C4 H10 109.956
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S 0.028      
2 S 0.028      
3 C -0.635      
4 C -0.635      
5 H 0.202      
6 H 0.195      
7 H 0.210      
8 H 0.202      
9 H 0.195      
10 H 0.210      


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 2.379 2.379
CHELPG 0.000 0.000 2.268 2.268
AIM        
ESP -0.002 -0.006 2.402 2.402


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -42.107 2.089 0.001
y 2.089 -35.671 -0.001
z 0.001 -0.001 -41.532
Traceless
 xyz
x -3.506 2.089 0.001
y 2.089 6.148 -0.001
z 0.001 -0.001 -2.642
Polar
3z2-r2-5.285
x2-y2-6.436
xy2.089
xz0.001
yz-0.001


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.368 -0.230 0.001
y -0.230 10.465 -0.000
z 0.001 -0.000 6.768


<r2> (average value of r2) Å2
<r2> 156.120
(<r2>)1/2 12.495