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

using model chemistry: BLYP/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 BLYP/3-21G
 hartrees
Energy at 0K-871.750265
Energy at 298.15K-871.755790
Nuclear repulsion energy206.817352
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 BLYP/3-21G
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A 3122 3105 6.45      
2 A 3097 3080 7.26      
3 A 3008 2991 11.02      
4 A 1497 1489 0.28      
5 A 1489 1481 9.13      
6 A 1339 1332 2.81      
7 A 956 951 2.32      
8 A 950 944 6.12      
9 A 587 584 1.41      
10 A 395 393 0.02      
11 A 180 179 0.84      
12 A 106 105 0.12      
13 A 71 70 1.69      
14 B 3122 3105 7.65      
15 B 3096 3079 2.11      
16 B 3007 2990 9.45      
17 B 1501 1493 23.53      
18 B 1484 1476 14.36      
19 B 1332 1325 8.96      
20 B 959 953 19.12      
21 B 946 941 4.26      
22 B 588 584 1.45      
23 B 210 208 1.82      
24 B 121 121 0.60      

Unscaled Zero Point Vibrational Energy (zpe) 16580.9 cm-1
Scaled (by 0.9945) Zero Point Vibrational Energy (zpe) 16489.7 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 BLYP/3-21G
ABC
0.23495 0.07912 0.07416

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

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 1.151 -0.521
S2 0.000 -1.151 -0.521
C3 1.321 1.477 0.849
C4 -1.321 -1.477 0.849
H5 1.441 2.570 0.873
H6 0.950 1.108 1.812
H7 2.258 0.988 0.560
H8 -1.441 -2.570 0.873
H9 -0.950 -1.108 1.812
H10 -2.258 -0.988 0.560

Atom - Atom Distances (Å)
  S1 S2 C3 C4 H5 H6 H7 H8 H9 H10
S12.30281.93083.24522.45652.51942.50834.22753.38383.2928
S22.30283.24521.93084.22753.38383.29282.45652.51942.5083
C31.93083.24523.96331.09991.09621.09554.90023.57304.3551
C43.24521.93083.96334.90023.57304.35511.09991.09621.0955
H52.45654.22751.09994.90021.80591.80765.89364.48645.1422
H62.51943.38381.09623.57301.80591.81444.48642.91874.0309
H72.50833.29281.09554.35511.80761.81445.14224.03094.9287
H84.22752.45654.90021.09995.89364.48645.14221.80591.8076
H93.38382.51943.57301.09624.48642.91874.03091.80591.8144
H103.29282.50834.35511.09555.14224.03094.92871.80761.8144

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 99.717 S1 C3 H5 104.969
S1 C3 H6 109.571 S1 C3 H7 108.809
S2 S1 C3 99.717 S2 C4 H8 104.969
S2 C4 H9 109.571 S2 C4 H10 108.809
H5 C3 H6 110.640 H5 C3 H7 110.843
H6 C3 H7 111.766 H8 C4 H9 110.640
H8 C4 H10 110.843 H9 C4 H10 111.766
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S 0.058      
2 S 0.058      
3 C -0.732      
4 C -0.732      
5 H 0.223      
6 H 0.218      
7 H 0.233      
8 H 0.223      
9 H 0.218      
10 H 0.233      


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 2.458 2.458
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -38.858 3.893 0.000
y 3.893 -38.376 0.000
z 0.000 0.000 -41.572
Traceless
 xyz
x 1.116 3.893 0.000
y 3.893 1.839 0.000
z 0.000 0.000 -2.954
Polar
3z2-r2-5.909
x2-y2-0.482
xy3.893
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> 174.108
(<r2>)1/2 13.195