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/6-31G**

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/6-31G**
 hartrees
Energy at 0K-874.254436
Energy at 298.15K-874.260886
Nuclear repulsion energy202.658118
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/6-31G**
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 3233 2918 0.00      
2 Ag 2894 2612 0.00      
3 Ag 1628 1469 0.00      
4 Ag 1482 1337 0.00      
5 Ag 1183 1068 0.00      
6 Ag 982 886 0.00      
7 Ag 795 718 0.00      
8 Ag 303 274 0.00      
9 Au 3305 2983 16.68      
10 Au 1239 1118 3.16      
11 Au 837 755 2.28      
12 Au 167 151 36.60      
13 Au 97 87 25.01      
14 Bg 3284 2964 0.00      
15 Bg 1418 1280 0.00      
16 Bg 1066 962 0.00      
17 Bg 177 160 0.00      
18 Bu 3240 2924 36.88      
19 Bu 2894 2612 26.83      
20 Bu 1627 1469 6.95      
21 Bu 1379 1244 71.67      
22 Bu 984 888 9.53      
23 Bu 781 705 13.22      
24 Bu 218 197 8.94      

Unscaled Zero Point Vibrational Energy (zpe) 17605.5 cm-1
Scaled (by 0.9026) Zero Point Vibrational Energy (zpe) 15890.7 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/6-31G**
ABC
0.85273 0.05055 0.04858

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/6-31G**

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.762 0.000
C2 0.000 -0.762 0.000
S3 1.729 -1.353 0.000
S4 -1.729 1.353 0.000
H5 1.470 -2.654 0.000
H6 -1.470 2.654 0.000
H7 -0.506 -1.137 0.880
H8 -0.506 -1.137 -0.880
H9 0.506 1.137 0.880
H10 0.506 1.137 -0.880

Atom - Atom Distances (Å)
  C1 C2 S3 S4 H5 H6 H7 H8 H9 H10
C11.52482.73221.82743.71922.39562.15322.15321.08181.0818
C21.52481.82742.73222.39563.71921.08181.08182.15322.1532
S32.73221.82744.39131.32705.12742.41222.41222.90992.9099
S41.82742.73224.39135.12741.32702.90992.90992.41222.4122
H53.71922.39561.32705.12746.06782.64222.64224.00904.0090
H62.39563.71925.12741.32706.06784.00904.00902.64222.6422
H72.15321.08182.41222.90992.64224.00901.75972.48823.0476
H82.15321.08182.41222.90992.64224.00901.75973.04762.4882
H91.08182.15322.90992.41224.00902.64222.48823.04761.7597
H101.08182.15322.90992.41224.00902.64223.04762.48821.7597

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 108.848 C1 C2 H7 110.234
C1 C2 H8 110.234 C1 S4 H6 97.564
C2 C1 S4 108.848 C2 C1 H9 110.234
C2 C1 H10 110.234 C2 S3 H5 97.564
S3 C2 H7 109.331 S3 C2 H8 109.331
S4 C1 H9 109.331 S4 C1 H10 109.331
H7 C2 H8 108.847 H9 C1 H10 108.847
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.381 -0.032    
2 C -0.381 -0.032    
3 S -0.007 -0.373    
4 S -0.007 -0.373    
5 H 0.053 0.201    
6 H 0.053 0.201    
7 H 0.168 0.102    
8 H 0.168 0.102    
9 H 0.168 0.102    
10 H 0.168 0.102    


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 8.812 -1.934 0.000
y -1.934 8.601 0.000
z 0.000 0.000 5.590


<r2> (average value of r2) Å2
<r2> 214.888
(<r2>)1/2 14.659