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

using model chemistry: B3PW91/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at B3PW91/3-21G
 hartrees
Energy at 0K-871.722569
Energy at 298.15K-871.728329
Nuclear repulsion energy210.901046
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 B3PW91/3-21G
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 3208 3084 3.92      
2 A 3184 3061 4.98      
3 A 3087 2967 10.90      
4 A 1525 1466 0.30      
5 A 1520 1461 14.01      
6 A 1389 1335 0.47      
7 A 998 959 3.53      
8 A 991 952 7.09      
9 A 648 623 1.69      
10 A 433 416 0.00      
11 A 195 188 1.16      
12 A 115 111 0.06      
13 A 75 72 1.89      
14 B 3208 3084 3.53      
15 B 3184 3060 0.42      
16 B 3086 2966 7.03      
17 B 1530 1471 29.68      
18 B 1514 1456 20.12      
19 B 1382 1329 2.45      
20 B 1001 962 22.70      
21 B 987 949 5.21      
22 B 647 621 1.55      
23 B 225 216 2.07      
24 B 133 128 0.68      

Unscaled Zero Point Vibrational Energy (zpe) 17133.2 cm-1
Scaled (by 0.9612) Zero Point Vibrational Energy (zpe) 16468.4 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 B3PW91/3-21G
ABC
0.24167 0.08312 0.07774

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/3-21G

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 1.128 -0.515
S2 0.000 -1.128 -0.515
C3 1.290 1.428 0.835
C4 -1.290 -1.428 0.835
H5 1.425 2.513 0.876
H6 0.920 1.058 1.792
H7 2.223 0.939 0.553
H8 -1.425 -2.513 0.876
H9 -0.920 -1.058 1.792
H10 -2.223 -0.939 0.553

Atom - Atom Distances (Å)
  S1 S2 C3 C4 H5 H6 H7 H8 H9 H10
S12.25611.89153.16592.42582.48422.47274.15033.30813.2175
S22.25613.16591.89154.15033.30813.21752.42582.48422.4727
C31.89153.16593.84991.09401.09051.09004.78673.46154.2458
C43.16591.89153.84994.78673.46154.24581.09401.09051.0900
H52.42584.15031.09404.78671.79211.79395.77834.36925.0329
H62.48423.30811.09053.46151.79211.80154.36922.80393.9243
H72.47273.21751.09004.24581.79391.80155.03293.92434.8257
H84.15032.42584.78671.09405.77834.36925.03291.79211.7939
H93.30812.48423.46151.09054.36922.80393.92431.79211.8015
H103.21752.47274.24581.09005.03293.92434.82571.79391.8015

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 99.137 S1 C3 H5 105.559
S1 C3 H6 109.899 S1 C3 H7 109.087
S2 S1 C3 99.137 S2 C4 H8 105.559
S2 C4 H9 109.899 S2 C4 H10 109.087
H5 C3 H6 110.246 H5 C3 H7 110.456
H6 C3 H7 111.421 H8 C4 H9 110.246
H8 C4 H10 110.456 H9 C4 H10 111.421
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S 0.079      
2 S 0.079      
3 C -0.861      
4 C -0.861      
5 H 0.260      
6 H 0.253      
7 H 0.269      
8 H 0.260      
9 H 0.253      
10 H 0.269      


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 2.602 2.602
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -38.824 4.021 0.000
y 4.021 -38.626 0.000
z 0.000 0.000 -41.642
Traceless
 xyz
x 1.310 4.021 0.000
y 4.021 1.607 0.000
z 0.000 0.000 -2.917
Polar
3z2-r2-5.834
x2-y2-0.198
xy4.021
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> 167.663
(<r2>)1/2 12.948