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

using model chemistry: PBEPBE/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 PBEPBE/3-21G
 hartrees
Energy at 0K-871.352081
Energy at 298.15K-871.357744
Nuclear repulsion energy209.836395
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 PBEPBE/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 3131 3102 3.10      
2 A 3105 3077 6.28      
3 A 3010 2982 11.61      
4 A 1484 1471 0.35      
5 A 1478 1464 13.18      
6 A 1343 1330 0.24      
7 A 962 953 0.52      
8 A 958 949 8.84      
9 A 622 617 1.02      
10 A 416 413 0.02      
11 A 188 186 1.26      
12 A 114 113 0.01      
13 A 73 72 1.54      
14 B 3131 3103 5.98      
15 B 3105 3077 0.72      
16 B 3009 2982 5.96      
17 B 1489 1475 29.09      
18 B 1472 1459 16.16      
19 B 1334 1322 2.59      
20 B 968 959 22.60      
21 B 955 946 6.54      
22 B 622 617 1.81      
23 B 220 218 2.17      
24 B 137 136 0.53      

Unscaled Zero Point Vibrational Energy (zpe) 16662.4 cm-1
Scaled (by 0.9909) Zero Point Vibrational Energy (zpe) 16510.8 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 PBEPBE/3-21G
ABC
0.23405 0.08375 0.07719

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

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 -0.504 1.018 -0.532
S2 0.504 -1.018 -0.532
C3 0.504 1.834 0.863
C4 -0.504 -1.834 0.863
H5 0.101 2.856 0.959
H6 0.356 1.278 1.800
H7 1.563 1.860 0.574
H8 -0.101 -2.856 0.959
H9 -0.356 -1.278 1.800
H10 -1.563 -1.860 0.574

Atom - Atom Distances (Å)
  S1 S2 C3 C4 H5 H6 H7 H8 H9 H10
S12.27231.90483.17542.44222.49852.49064.17033.27583.2606
S22.27233.17541.90484.17033.27583.26062.44222.49852.4906
C31.90483.17543.80421.10211.09901.09784.72973.36164.2431
C43.17541.90483.80424.72973.36164.24311.10211.09901.0978
H52.44224.17031.10214.72971.80591.80925.71504.24305.0159
H62.49853.27581.09903.36161.80591.81594.24302.65313.8770
H72.49063.26061.09784.24311.80921.81595.01593.87704.8592
H84.17032.44224.72971.10215.71504.24305.01591.80591.8092
H93.27582.49853.36161.09904.24302.65313.87701.80591.8159
H103.26062.49064.24311.09785.01593.87704.85921.80921.8159

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 98.581 S1 C3 H5 105.489
S1 C3 H6 109.630 S1 C3 H7 109.117
S2 S1 C3 98.581 S2 C4 H8 105.489
S2 C4 H9 109.630 S2 C4 H10 109.117
H5 C3 H6 110.258 H5 C3 H7 110.653
H6 C3 H7 111.509 H8 C4 H9 110.258
H8 C4 H10 110.653 H9 C4 H10 111.509
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S 0.076      
2 S 0.076      
3 C -0.832      
4 C -0.832      
5 H 0.251      
6 H 0.244      
7 H 0.260      
8 H 0.251      
9 H 0.244      
10 H 0.260      


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 2.577 2.577
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -42.003 2.075 0.000
y 2.075 -35.681 0.000
z 0.000 0.000 -41.537
Traceless
 xyz
x -3.394 2.075 0.000
y 2.075 6.089 0.000
z 0.000 0.000 -2.695
Polar
3z2-r2-5.390
x2-y2-6.322
xy2.075
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.284 -0.587 0.000
y -0.587 11.586 0.000
z 0.000 0.000 6.755


<r2> (average value of r2) Å2
<r2> 168.173
(<r2>)1/2 12.968