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

using model chemistry: HF/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 HF/CEP-31G
 hartrees
Energy at 0K-34.235592
Energy at 298.15K-34.241682
Nuclear repulsion energy62.960164
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 HF/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 3377 3044 24.39      
2 A 3363 3032 19.01      
3 A 3245 2925 48.15      
4 A 1608 1449 0.15      
5 A 1596 1439 11.19      
6 A 1502 1354 9.42      
7 A 1085 978 7.65      
8 A 1080 974 2.74      
9 A 716 646 4.77      
10 A 490 442 0.06      
11 A 223 201 1.85      
12 A 150 135 0.02      
13 A 74 67 3.24      
14 B 3376 3043 35.65      
15 B 3362 3030 19.81      
16 B 3243 2924 67.48      
17 B 1610 1451 21.94      
18 B 1594 1437 12.48      
19 B 1495 1348 22.93      
20 B 1085 978 24.10      
21 B 1076 970 2.22      
22 B 710 640 6.05      
23 B 245 221 2.50      
24 B 157 141 0.57      

Unscaled Zero Point Vibrational Energy (zpe) 18230.5 cm-1
Scaled (by 0.9014) Zero Point Vibrational Energy (zpe) 16433.0 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 HF/CEP-31G
ABC
0.26001 0.08107 0.07729

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

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 -0.999 0.461 -0.485
S2 0.999 -0.461 -0.485
C3 -0.797 1.832 0.786
C4 0.797 -1.832 0.786
H5 -1.745 2.361 0.799
H6 -0.590 1.414 1.765
H7 0.000 2.499 0.480
H8 1.745 -2.361 0.799
H9 0.590 -1.414 1.765
H10 0.000 -2.499 0.480

Atom - Atom Distances (Å)
  S1 S2 C3 C4 H5 H6 H7 H8 H9 H10
S12.20091.88033.17792.41182.47762.46634.14073.33253.2693
S22.20093.17791.88034.14073.33253.26932.41182.47762.4663
C31.88033.17793.99581.08591.08441.08344.90383.66364.4140
C43.17791.88033.99584.90383.66364.41401.08591.08441.0834
H52.41184.14071.08594.90381.77871.77965.87254.54355.1737
H62.47763.33251.08443.66361.77871.78214.54353.06524.1607
H72.46633.26931.08344.41401.77961.78215.17374.16074.9975
H84.14072.41184.90381.08595.87254.54355.17371.77871.7796
H93.33252.47763.66361.08444.54353.06524.16071.77871.7821
H103.26932.46634.41401.08345.17374.16074.99751.77961.7821

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 101.990 S1 C3 H5 105.650
S1 C3 H6 110.479 S1 C3 H7 109.700
S2 S1 C3 101.990 S2 C4 H8 105.650
S2 C4 H9 110.479 S2 C4 H10 109.700
H5 C3 H6 110.077 H5 C3 H7 110.239
H6 C3 H7 110.587 H8 C4 H9 110.077
H8 C4 H10 110.239 H9 C4 H10 110.587
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/CEP-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S -0.010      
2 S -0.010      
3 C -0.486      
4 C -0.486      
5 H 0.165      
6 H 0.156      
7 H 0.175      
8 H 0.165      
9 H 0.156      
10 H 0.175      


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 2.958 2.958
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -41.530 -2.935 0.000
y -2.935 -33.461 0.000
z 0.000 0.000 -40.763
Traceless
 xyz
x -4.418 -2.935 0.000
y -2.935 7.686 0.000
z 0.000 0.000 -3.268
Polar
3z2-r2-6.536
x2-y2-8.069
xy-2.935
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 9.207 -3.076 0.000
y -3.076 9.410 0.000
z 0.000 0.000 6.407


<r2> (average value of r2) Å2
<r2> 120.722
(<r2>)1/2 10.987