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

using model chemistry: B3LYP/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 B3LYP/6-31G**
 hartrees
Energy at 0K-876.215975
Energy at 298.15K-876.222002
Nuclear repulsion energy218.891982
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/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 3166 3042 5.93      
2 A 3149 3026 8.18      
3 A 3060 2940 16.33      
4 A 1491 1432 0.46      
5 A 1477 1419 6.01      
6 A 1367 1314 3.00      
7 A 983 945 6.49      
8 A 979 941 1.07      
9 A 685 658 0.12      
10 A 487 468 0.25      
11 A 227 218 1.47      
12 A 144 138 0.04      
13 A 99 95 1.47      
14 B 3166 3042 9.36      
15 B 3149 3025 4.56      
16 B 3058 2938 19.68      
17 B 1495 1436 18.30      
18 B 1472 1414 9.78      
19 B 1360 1307 7.30      
20 B 984 946 18.38      
21 B 973 935 3.12      
22 B 683 656 2.20      
23 B 257 247 1.47      
24 B 154 148 0.44      

Unscaled Zero Point Vibrational Energy (zpe) 17032.7 cm-1
Scaled (by 0.9608) Zero Point Vibrational Energy (zpe) 16365.0 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/6-31G**
ABC
0.27077 0.08861 0.08193

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-31G**

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 1.041 -0.495
S2 0.000 -1.041 -0.495
C3 1.231 1.468 0.798
C4 -1.231 -1.468 0.798
H5 1.308 2.559 0.789
H6 0.900 1.142 1.786
H7 2.204 1.034 0.563
H8 -1.308 -2.559 0.789
H9 -0.900 -1.142 1.786
H10 -2.204 -1.034 0.563

Atom - Atom Distances (Å)
  S1 S2 C3 C4 H5 H6 H7 H8 H9 H10
S12.08251.83583.07942.37992.45432.44474.04003.28323.2065
S22.08253.07941.83584.04003.28323.20652.37992.45432.4447
C31.83583.07943.83101.09391.09151.09094.76023.51074.2554
C43.07941.83583.83104.76023.51074.25541.09391.09151.0909
H52.37994.04001.09394.76021.77991.78315.74764.42315.0288
H62.45433.28321.09153.51071.77991.79094.42312.90763.9824
H72.44473.20651.09094.25541.78311.79095.02883.98244.8681
H84.04002.37994.76021.09395.74764.42315.02881.77991.7831
H93.28322.45433.51071.09154.42312.90763.98241.77991.7909
H103.20652.44474.25541.09095.02883.98244.86811.78311.7909

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 103.433 S1 C3 H5 105.851
S1 C3 H6 111.399 S1 C3 H7 110.710
S2 S1 C3 103.433 S2 C4 H8 105.851
S2 C4 H9 111.399 S2 C4 H10 110.710
H5 C3 H6 109.065 H5 C3 H7 109.402
H6 C3 H7 110.293 H8 C4 H9 109.065
H8 C4 H10 109.402 H9 C4 H10 110.293
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S 0.014      
2 S 0.014      
3 C -0.460      
4 C -0.460      
5 H 0.147      
6 H 0.143      
7 H 0.156      
8 H 0.147      
9 H 0.143      
10 H 0.156      


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 2.249 2.249
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -38.520 3.672 0.000
y 3.672 -37.669 0.000
z 0.000 0.000 -40.757
Traceless
 xyz
x 0.693 3.672 0.000
y 3.672 1.970 0.000
z 0.000 0.000 -2.663
Polar
3z2-r2-5.326
x2-y2-0.851
xy3.672
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 11.270 -0.003 -0.407
y -0.003 7.060 -0.000
z -0.407 -0.000 6.683


<r2> (average value of r2) Å2
<r2> 159.419
(<r2>)1/2 12.626