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-31G

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-31G
 hartrees
Energy at 0K-34.228011
Energy at 298.15K-34.234311
Nuclear repulsion energy64.896303
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 Ag 3289 2964 0.00      
2 Ag 2708 2441 0.00      
3 Ag 1634 1473 0.00      
4 Ag 1473 1328 0.00      
5 Ag 1184 1067 0.00      
6 Ag 941 848 0.00      
7 Ag 748 674 0.00      
8 Ag 290 262 0.00      
9 Au 3381 3048 53.45      
10 Au 1231 1110 2.97      
11 Au 855 770 6.84      
12 Au 153 138 66.92      
13 Au 95 85 36.17      
14 Bg 3358 3027 0.00      
15 Bg 1414 1275 0.00      
16 Bg 1066 961 0.00      
17 Bg 157 141 0.00      
18 Bu 3292 2968 61.75      
19 Bu 2708 2441 104.92      
20 Bu 1631 1471 8.82      
21 Bu 1392 1254 104.12      
22 Bu 929 838 16.04      
23 Bu 719 648 35.74      
24 Bu 208 188 13.26      

Unscaled Zero Point Vibrational Energy (zpe) 17427.7 cm-1
Scaled (by 0.9014) Zero Point Vibrational Energy (zpe) 15709.3 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
0.82492 0.04818 0.04632

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

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.767 0.000
C2 0.000 -0.767 0.000
S3 1.802 -1.349 0.000
S4 -1.802 1.349 0.000
H5 1.572 -2.690 0.000
H6 -1.572 2.690 0.000
H7 -0.487 -1.156 0.886
H8 -0.487 -1.156 -0.886
H9 0.487 1.156 0.886
H10 0.487 1.156 -0.886

Atom - Atom Distances (Å)
  C1 C2 S3 S4 H5 H6 H7 H8 H9 H10
C11.53442.77941.89323.79842.48412.17282.17281.08351.0835
C21.53441.89322.77942.48413.79841.08351.08352.17282.1728
S32.77941.89324.50151.36075.26322.46192.46192.96452.9645
S41.89322.77944.50155.26321.36072.96452.96452.46192.4619
H53.79842.48411.36075.26326.23242.71692.71694.09354.0935
H62.48413.79845.26321.36076.23244.09354.09352.71692.7169
H72.17281.08352.46192.96452.71694.09351.77282.50853.0717
H82.17281.08352.46192.96452.71694.09351.77283.07172.5085
H91.08352.17282.96452.46194.09352.71692.50853.07171.7728
H101.08352.17282.96452.46194.09352.71693.07172.50851.7728

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 107.905 C1 C2 H7 111.016
C1 C2 H8 111.016 C1 S4 H6 98.203
C2 C1 S4 107.905 C2 C1 H9 111.016
C2 C1 H10 111.016 C2 S3 H5 98.203
S3 C2 H7 108.514 S3 C2 H8 108.514
S4 C1 H9 108.514 S4 C1 H10 108.514
H7 C2 H8 109.788 H9 C1 H10 109.788
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 C -0.354      
2 C -0.354      
3 S 0.008      
4 S 0.008      
5 H 0.023      
6 H 0.023      
7 H 0.162      
8 H 0.162      
9 H 0.162      
10 H 0.162      


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 10.177 -2.650 0.000
y -2.650 8.664 0.000
z 0.000 0.000 3.739


<r2> (average value of r2) Å2
<r2> 119.823
(<r2>)1/2 10.946