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

using model chemistry: B3LYP/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 B3LYP/CEP-31G*
 hartrees
Energy at 0K-35.206451
Energy at 298.15K-35.212413
Nuclear repulsion energy63.847716
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 B3LYP/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 3158 3050 14.77      
2 A 3139 3032 13.53      
3 A 3054 2949 26.26      
4 A 1474 1423 0.13      
5 A 1461 1410 8.24      
6 A 1351 1305 3.20      
7 A 965 932 8.51      
8 A 963 930 0.11      
9 A 677 654 0.11      
10 A 487 471 0.39      
11 A 222 214 1.21      
12 A 144 139 0.02      
13 A 96 92 1.60      
14 B 3158 3049 24.03      
15 B 3139 3031 19.47      
16 B 3052 2947 38.53      
17 B 1478 1427 19.50      
18 B 1456 1406 11.98      
19 B 1344 1298 8.28      
20 B 969 936 23.84      
21 B 954 921 4.58      
22 B 676 653 2.27      
23 B 252 243 1.27      
24 B 154 148 0.49      

Unscaled Zero Point Vibrational Energy (zpe) 16909.0 cm-1
Scaled (by 0.9657) Zero Point Vibrational Energy (zpe) 16329.0 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 B3LYP/CEP-31G*
ABC
0.26581 0.08721 0.08080

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/CEP-31G*

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 1.049 -0.498
S2 0.000 -1.049 -0.498
C3 1.249 1.473 0.803
C4 -1.249 -1.473 0.803
H5 1.327 2.574 0.797
H6 0.919 1.139 1.799
H7 2.228 1.034 0.557
H8 -1.327 -2.574 0.797
H9 -0.919 -1.139 1.799
H10 -2.228 -1.034 0.557

Atom - Atom Distances (Å)
  S1 S2 C3 C4 H5 H6 H7 H8 H9 H10
S12.09871.85303.10092.40062.47612.46484.07043.30313.2270
S22.09873.10091.85304.07043.30313.22702.40062.47612.4648
C31.85303.10093.86261.10411.10121.10034.79753.53754.2931
C43.10091.85303.86264.79753.53754.29311.10411.10121.1003
H52.40064.07041.10414.79751.79781.80045.79234.45385.0704
H62.47613.30311.10123.53751.79781.80744.45382.92674.0205
H72.46483.22701.10034.29311.80041.80745.07044.02054.9113
H84.07042.40064.79751.10415.79234.45385.07041.79781.8004
H93.30312.47613.53751.10124.45382.92674.02051.79781.8074
H103.22702.46484.29311.10035.07044.02054.91131.80041.8074

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 103.210 S1 C3 H5 105.744
S1 C3 H6 111.332 S1 C3 H7 110.541
S2 S1 C3 103.210 S2 C4 H8 105.744
S2 C4 H9 111.332 S2 C4 H10 110.541
H5 C3 H6 109.218 H5 C3 H7 109.520
H6 C3 H7 110.366 H8 C4 H9 109.218
H8 C4 H10 109.520 H9 C4 H10 110.366
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/CEP-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S -0.078      
2 S -0.078      
3 C -0.490      
4 C -0.490      
5 H 0.181      
6 H 0.186      
7 H 0.201      
8 H 0.181      
9 H 0.186      
10 H 0.201      


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 2.332 2.332
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -36.894 3.727 0.000
y 3.727 -35.828 0.000
z 0.000 0.000 -39.234
Traceless
 xyz
x 0.638 3.727 0.000
y 3.727 2.235 0.000
z 0.000 0.000 -2.873
Polar
3z2-r2-5.746
x2-y2-1.065
xy3.727
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 8.744 -2.463 0.000
y -2.463 9.246 0.000
z 0.000 0.000 7.149


<r2> (average value of r2) Å2
<r2> 115.982
(<r2>)1/2 10.769