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

using model chemistry: LSDA/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 LSDA/3-21G
 hartrees
Energy at 0K-869.313627
Energy at 298.15K-869.319518
Nuclear repulsion energy213.718796
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 LSDA/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 3132 3080 0.62      
2 A 3104 3053 5.79      
3 A 3007 2958 10.31      
4 A 1465 1441 14.73      
5 A 1463 1439 4.13      
6 A 1341 1319 0.93      
7 A 963 947 1.42      
8 A 962 946 9.86      
9 A 659 649 0.56      
10 A 439 432 0.04      
11 A 194 191 1.65      
12 A 161 158 0.00      
13 A 93 91 1.27      
14 B 3133 3082 2.45      
15 B 3108 3057 0.08      
16 B 3009 2959 1.62      
17 B 1471 1447 35.07      
18 B 1452 1428 25.76      
19 B 1330 1308 0.26      
20 B 970 954 27.64      
21 B 959 944 10.51      
22 B 660 649 2.52      
23 B 233 229 2.95      
24 B 154 151 0.62      

Unscaled Zero Point Vibrational Energy (zpe) 16730.0 cm-1
Scaled (by 0.9836) Zero Point Vibrational Energy (zpe) 16455.6 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 LSDA/3-21G
ABC
0.23349 0.09014 0.08100

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

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 -0.484 1.010 -0.546
S2 0.484 -1.010 -0.546
C3 0.484 1.732 0.882
C4 -0.484 -1.732 0.882
H5 0.104 2.757 1.026
H6 0.305 1.140 1.793
H7 1.552 1.752 0.626
H8 -0.104 -2.757 1.026
H9 -0.305 -1.140 1.793
H10 -1.552 -1.752 0.626

Atom - Atom Distances (Å)
  S1 S2 C3 C4 H5 H6 H7 H8 H9 H10
S12.23941.87103.09182.42302.47182.46434.09953.18133.1845
S22.23943.09181.87104.09953.18133.18452.42302.47182.4643
C31.87103.09183.59741.10271.10091.09864.53033.11434.0437
C43.09181.87103.59744.53033.11434.04371.10271.10091.0986
H52.42304.09951.10274.53031.80181.80805.51873.99274.8203
H62.47183.18131.10093.11431.80181.81413.99272.35933.6290
H72.46433.18451.09864.04371.80801.81414.82033.62904.6812
H84.09952.42304.53031.10275.51873.99274.82031.80181.8080
H93.18132.47183.11431.10093.99272.35933.62901.80181.8141
H103.18452.46434.04371.09864.82033.62904.68121.80801.8141

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 97.152 S1 C3 H5 106.242
S1 C3 H6 109.823 S1 C3 H7 109.391
S2 S1 C3 97.152 S2 C4 H8 106.242
S2 C4 H9 109.823 S2 C4 H10 109.391
H5 C3 H6 109.704 H5 C3 H7 110.435
H6 C3 H7 111.127 H8 C4 H9 109.704
H8 C4 H10 110.435 H9 C4 H10 111.127
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at LSDA/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S 0.093      
2 S 0.093      
3 C -0.885      
4 C -0.885      
5 H 0.265      
6 H 0.253      
7 H 0.274      
8 H 0.265      
9 H 0.253      
10 H 0.274      


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 2.669 2.669
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -42.017 1.976 0.000
y 1.976 -36.056 0.000
z 0.000 0.000 -41.406
Traceless
 xyz
x -3.286 1.976 0.000
y 1.976 5.655 0.000
z 0.000 0.000 -2.369
Polar
3z2-r2-4.739
x2-y2-5.960
xy1.976
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.086 -0.617 0.000
y -0.617 11.096 0.000
z 0.000 0.000 6.792


<r2> (average value of r2) Å2
<r2> 0.000
(<r2>)1/2 0.000