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

using model chemistry: B1B95/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at B1B95/6-31G*
 hartrees
Energy at 0K-876.211224
Energy at 298.15K-876.217358
Nuclear repulsion energy221.771647
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 B1B95/6-31G*
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 3200 3038 3.55      
2 A 3184 3022 8.21      
3 A 3091 2935 18.03      
4 A 1504 1428 0.23      
5 A 1496 1420 8.47      
6 A 1390 1319 1.27      
7 A 1000 950 6.80      
8 A 992 942 1.38      
9 A 721 684 0.13      
10 A 518 491 0.30      
11 A 233 221 1.80      
12 A 152 145 0.00      
13 A 102 97 1.29      
14 B 3199 3037 8.03      
15 B 3183 3022 3.51      
16 B 3090 2933 16.98      
17 B 1508 1432 20.41      
18 B 1488 1412 11.83      
19 B 1381 1311 3.28      
20 B 999 948 20.48      
21 B 989 939 4.10      
22 B 719 682 2.60      
23 B 261 248 1.60      
24 B 166 158 0.45      

Unscaled Zero Point Vibrational Energy (zpe) 17281.8 cm-1
Scaled (by 0.9493) Zero Point Vibrational Energy (zpe) 16405.6 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 B1B95/6-31G*
ABC
0.27221 0.09237 0.08477

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/6-31G*

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 -0.452 0.921 -0.498
S2 0.452 -0.921 -0.498
C3 0.452 1.811 0.800
C4 -0.452 -1.811 0.800
H5 0.044 2.825 0.819
H6 0.300 1.353 1.777
H7 1.516 1.857 0.569
H8 -0.044 -2.825 0.819
H9 -0.300 -1.353 1.777
H10 -1.516 -1.857 0.569

Atom - Atom Distances (Å)
  S1 S2 C3 C4 H5 H6 H7 H8 H9 H10
S12.05221.81463.02492.36682.43502.42633.99123.22053.1604
S22.05223.02491.81463.99123.22053.16042.36682.43502.4263
C31.81463.02493.73371.09241.09051.08964.66253.39634.1691
C43.02491.81463.73374.66253.39634.16911.09241.09051.0896
H52.36683.99121.09244.66251.77501.77895.64994.30004.9409
H62.43503.22051.09053.39631.77501.78644.30002.77193.8810
H72.42633.16041.08964.16911.77891.78644.94093.88104.7942
H83.99122.36684.66251.09245.64994.30004.94091.77501.7789
H93.22052.43503.39631.09054.30002.77193.88101.77501.7864
H103.16042.42634.16911.08964.94093.88104.79421.77891.7864

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 102.765 S1 C3 H5 106.349
S1 C3 H6 111.451 S1 C3 H7 110.840
S2 S1 C3 102.765 S2 C4 H8 106.349
S2 C4 H9 111.451 S2 C4 H10 110.840
H5 C3 H6 108.817 H5 C3 H7 109.226
H6 C3 H7 110.050 H8 C4 H9 108.817
H8 C4 H10 109.226 H9 C4 H10 110.050
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S 0.026      
2 S 0.026      
3 C -0.645      
4 C -0.645      
5 H 0.206      
6 H 0.199      
7 H 0.214      
8 H 0.206      
9 H 0.199      
10 H 0.214      


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 2.286 2.286
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -41.056 1.882 0.000
y 1.882 -34.862 0.000
z 0.000 0.000 -40.513
Traceless
 xyz
x -3.369 1.882 0.000
y 1.882 5.923 0.000
z 0.000 0.000 -2.554
Polar
3z2-r2-5.108
x2-y2-6.194
xy1.882
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.514 -0.230 0.000
y -0.230 10.822 0.000
z 0.000 0.000 6.964


<r2> (average value of r2) Å2
<r2> 154.958
(<r2>)1/2 12.448