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

using model chemistry: HF/CEP-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/CEP-31G*
 hartrees
Energy at 0K-34.342531
Energy at 298.15K-34.348887
Nuclear repulsion energy64.782853
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/CEP-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 3349 3007 20.07      
2 A 3331 2991 17.67      
3 A 3242 2911 44.69      
4 A 1607 1443 0.15      
5 A 1595 1433 5.52      
6 A 1497 1344 9.77      
7 A 1068 959 3.27      
8 A 1064 955 2.03      
9 A 773 694 1.68      
10 A 563 506 0.44      
11 A 250 225 1.62      
12 A 169 151 0.01      
13 A 99 89 1.88      
14 B 3348 3006 37.03      
15 B 3329 2990 31.50      
16 B 3240 2909 61.26      
17 B 1610 1445 14.41      
18 B 1591 1429 7.55      
19 B 1488 1336 22.41      
20 B 1073 963 15.74      
21 B 1055 948 1.16      
22 B 766 688 1.81      
23 B 280 251 1.35      
24 B 177 159 0.40      

Unscaled Zero Point Vibrational Energy (zpe) 18280.5 cm-1
Scaled (by 0.898) Zero Point Vibrational Energy (zpe) 16415.9 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/CEP-31G*
ABC
0.27244 0.08999 0.08358

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

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 1.033 -0.490
S2 0.000 -1.033 -0.490
C3 1.241 1.440 0.790
C4 -1.241 -1.440 0.790
H5 1.313 2.527 0.806
H6 0.925 1.087 1.769
H7 2.207 1.015 0.532
H8 -1.313 -2.527 0.806
H9 -0.925 -1.087 1.769
H10 -2.207 -1.015 0.532

Atom - Atom Distances (Å)
  S1 S2 C3 C4 H5 H6 H7 H8 H9 H10
S12.06671.82823.04852.37432.44212.43204.01043.23373.1794
S22.06673.04851.82824.01043.23373.17942.37432.44212.4320
C31.82823.04853.80111.08991.08771.08664.71803.46934.2398
C43.04851.82823.80114.71803.46934.23981.08991.08771.0866
H52.37434.01041.08994.71801.77521.77795.69614.35915.0012
H62.44213.23371.08773.46931.77521.78284.35912.85533.9698
H72.43203.17941.08664.23981.77791.78285.00123.96984.8578
H84.01042.37434.71801.08995.69614.35915.00121.77521.7779
H93.23372.44213.46931.08774.35912.85533.96981.77521.7828
H103.17942.43204.23981.08665.00123.96984.85781.77791.7828

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 102.846 S1 C3 H5 106.132
S1 C3 H6 111.201 S1 C3 H7 110.501
S2 S1 C3 102.846 S2 C4 H8 106.132
S2 C4 H9 111.201 S2 C4 H10 110.501
H5 C3 H6 109.214 H5 C3 H7 109.542
H6 C3 H7 110.157 H8 C4 H9 109.214
H8 C4 H10 109.542 H9 C4 H10 110.157
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/CEP-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S -0.086      
2 S -0.086      
3 C -0.369      
4 C -0.369      
5 H 0.147      
6 H 0.145      
7 H 0.163      
8 H 0.147      
9 H 0.145      
10 H 0.163      


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 2.454 2.454
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -37.251 3.901 0.000
y 3.901 -36.626 0.000
z 0.000 0.000 -39.778
Traceless
 xyz
x 0.951 3.901 0.000
y 3.901 1.888 0.000
z 0.000 0.000 -2.840
Polar
3z2-r2-5.680
x2-y2-0.625
xy3.901
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 8.206 -2.200 0.000
y -2.200 8.559 0.000
z 0.000 0.000 6.718


<r2> (average value of r2) Å2
<r2> 113.468
(<r2>)1/2 10.652