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 CH2SHCH2SH (1,2-Ethanedithiol)

using model chemistry: HF/CEP-121G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2H 1Ag
Energy calculated at HF/CEP-121G*
 hartrees
Energy at 0K-34.341173
Energy at 298.15K-34.347633
Nuclear repulsion energy65.916902
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-121G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 Ag 3240 2927 0.00      
2 Ag 2851 2575 0.00      
3 Ag 1631 1473 0.00      
4 Ag 1480 1337 0.00      
5 Ag 1176 1063 0.00      
6 Ag 977 882 0.00      
7 Ag 789 713 0.00      
8 Ag 300 271 0.00      
9 Au 3313 2993 27.01      
10 Au 1228 1109 4.62      
11 Au 832 752 1.87      
12 Au 174 158 39.83      
13 Au 98 88 21.22      
14 Bg 3291 2973 0.00      
15 Bg 1412 1275 0.00      
16 Bg 1059 957 0.00      
17 Bg 186 168 0.00      
18 Bu 3245 2932 51.56      
19 Bu 2851 2576 23.19      
20 Bu 1632 1474 6.17      
21 Bu 1369 1237 90.93      
22 Bu 972 878 6.75      
23 Bu 781 706 14.69      
24 Bu 215 195 8.64      

Unscaled Zero Point Vibrational Energy (zpe) 17550.6 cm-1
Scaled (by 0.9034) Zero Point Vibrational Energy (zpe) 15855.2 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-121G*
ABC
0.84298 0.05014 0.04817

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/CEP-121G*

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.766 0.000
C2 0.000 -0.766 0.000
S3 1.741 -1.353 0.000
S4 -1.741 1.353 0.000
H5 1.477 -2.665 0.000
H6 -1.477 2.665 0.000
H7 -0.504 -1.142 0.882
H8 -0.504 -1.142 -0.882
H9 0.504 1.142 0.882
H10 0.504 1.142 -0.882

Atom - Atom Distances (Å)
  C1 C2 S3 S4 H5 H6 H7 H8 H9 H10
C11.53232.74271.83723.73522.40542.16182.16181.08281.0828
C21.53231.83722.74272.40543.73521.08281.08282.16182.1618
S32.74271.83724.41001.33775.14772.42072.42072.92172.9217
S41.83722.74274.41005.14771.33772.92172.92172.42072.4207
H53.73522.40541.33775.14776.09332.64922.64924.02724.0272
H62.40543.73525.14771.33776.09334.02724.02722.64922.6492
H72.16181.08282.42072.92172.64924.02721.76342.49683.0568
H82.16181.08282.42072.92172.64924.02721.76343.05682.4968
H91.08282.16182.92172.42074.02722.64922.49683.05681.7634
H101.08282.16182.92172.42074.02722.64923.05682.49681.7634

picture of 1,2-Ethanedithiol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 S3 108.634 C1 C2 H7 110.329
C1 C2 H8 110.329 C1 S4 H6 97.261
C2 C1 S4 108.634 C2 C1 H9 110.329
C2 C1 H10 110.329 C2 S3 H5 97.261
S3 C2 H7 109.249 S3 C2 H8 109.249
S4 C1 H9 109.249 S4 C1 H10 109.249
H7 C2 H8 109.030 H9 C1 H10 109.030
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/CEP-121G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.355      
2 C -0.355      
3 S -0.158      
4 S -0.158      
5 H 0.124      
6 H 0.124      
7 H 0.195      
8 H 0.195      
9 H 0.195      
10 H 0.195      


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 0.000 0.000
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 9.739 -2.058 0.000
y -2.058 9.088 0.000
z 0.000 0.000 6.278


<r2> (average value of r2) Å2
<r2> 115.897
(<r2>)1/2 10.766