return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

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

using model chemistry: HF/STO-3G

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/STO-3G
 hartrees
Energy at 0K-864.664583
Energy at 298.15K-864.670917
Nuclear repulsion energy222.671132
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/STO-3G
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 3742 3055 0.26      
2 A 3732 3047 3.28      
3 A 3551 2899 0.94      
4 A 1835 1498 0.29      
5 A 1825 1490 3.42      
6 A 1706 1393 2.56      
7 A 1176 960 5.81      
8 A 1168 954 0.33      
9 A 940 767 0.01      
10 A 680 556 0.12      
11 A 277 226 1.67      
12 A 156 127 0.06      
13 A 88 72 0.44      
14 B 3742 3055 0.59      
15 B 3732 3047 2.15      
16 B 3550 2899 0.96      
17 B 1836 1499 7.60      
18 B 1822 1488 4.06      
19 B 1695 1384 27.56      
20 B 1175 959 12.42      
21 B 1162 949 0.31      
22 B 939 767 0.79      
23 B 312 255 1.64      
24 B 161 131 0.14      

Unscaled Zero Point Vibrational Energy (zpe) 20499.8 cm-1
Scaled (by 0.8165) Zero Point Vibrational Energy (zpe) 16738.0 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/STO-3G
ABC
0.27076 0.09305 0.08737

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

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 -0.479 0.915 -0.484
S2 0.479 -0.915 -0.484
C3 0.479 1.783 0.771
C4 -0.479 -1.783 0.771
H5 0.086 2.791 0.859
H6 0.406 1.311 1.748
H7 1.531 1.855 0.508
H8 -0.086 -2.791 0.859
H9 -0.406 -1.311 1.748
H10 -1.531 -1.855 0.508

Atom - Atom Distances (Å)
  S1 S2 C3 C4 H5 H6 H7 H8 H9 H10
S12.06501.80222.97572.37562.43302.43023.96143.15263.1239
S22.06502.97571.80223.96143.15263.12392.37562.43302.4302
C31.80222.97573.69281.08571.08681.08664.61023.36294.1644
C42.97571.80223.69284.61023.36294.16441.08571.08681.0866
H52.37563.96141.08574.61021.75631.75765.58554.22634.9316
H62.43303.15261.08683.36291.75631.76014.22632.74463.9125
H72.43023.12391.08664.16441.75761.76014.93163.91254.8094
H83.96142.37564.61021.08575.58554.22634.93161.75631.7576
H93.15262.43303.36291.08684.22632.74463.91251.75631.7601
H103.12392.43024.16441.08664.93163.91254.80941.75761.7601

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 100.393 S1 C3 H5 108.111
S1 C3 H6 112.359 S1 C3 H7 112.156
S2 S1 C3 100.393 S2 C4 H8 108.111
S2 C4 H9 112.359 S2 C4 H10 112.156
H5 C3 H6 107.879 H5 C3 H7 108.006
H6 C3 H7 108.158 H8 C4 H9 107.879
H8 C4 H10 108.006 H9 C4 H10 108.158
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S 0.075      
2 S 0.075      
3 C -0.274      
4 C -0.274      
5 H 0.071      
6 H 0.062      
7 H 0.067      
8 H 0.071      
9 H 0.062      
10 H 0.067      


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 1.133 1.133
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -36.934 1.148 0.000
y 1.148 -34.493 0.000
z 0.000 0.000 -36.704
Traceless
 xyz
x -1.335 1.148 0.000
y 1.148 2.326 0.000
z 0.000 0.000 -0.991
Polar
3z2-r2-1.982
x2-y2-2.441
xy1.148
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.757 -0.120 0.000
y -0.120 6.117 0.000
z 0.000 0.000 2.961


<r2> (average value of r2) Å2
<r2> 151.202
(<r2>)1/2 12.296