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: TPSSh/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 TPSSh/6-31G*
 hartrees
Energy at 0K-876.200754
Energy at 298.15K-876.206981
HF Energy-876.200754
Nuclear repulsion energy201.460728
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 TPSSh/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 3083 2958 0.00      
2 Ag 2710 2600 0.00      
3 Ag 1529 1467 0.00      
4 Ag 1354 1299 0.00      
5 Ag 1107 1062 0.00      
6 Ag 893 857 0.00      
7 Ag 736 706 0.00      
8 Ag 273 261 0.00      
9 Au 3155 3027 15.39      
10 Au 1145 1099 4.70      
11 Au 786 754 3.44      
12 Au 180 172 42.00      
13 Au 95 92 17.00      
14 Bg 3133 3006 0.00      
15 Bg 1320 1266 0.00      
16 Bg 985 945 0.00      
17 Bg 184 176 0.00      
18 Bu 3091 2965 30.97      
19 Bu 2711 2601 44.54      
20 Bu 1531 1469 5.29      
21 Bu 1267 1216 67.25      
22 Bu 897 860 5.62      
23 Bu 711 682 9.48      
24 Bu 194 186 9.01      

Unscaled Zero Point Vibrational Energy (zpe) 16534.3 cm-1
Scaled (by 0.9594) Zero Point Vibrational Energy (zpe) 15863.0 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 TPSSh/6-31G*
ABC
0.83082 0.05024 0.04824

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

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.489 0.587 0.000
C2 -0.489 -0.587 0.000
S3 0.489 -2.144 0.000
S4 -0.489 2.144 0.000
H5 -0.569 -2.977 0.000
H6 0.569 2.977 0.000
H7 -1.122 -0.549 0.891
H8 -1.122 -0.549 -0.891
H9 1.122 0.549 0.891
H10 1.122 0.549 -0.891

Atom - Atom Distances (Å)
  C1 C2 S3 S4 H5 H6 H7 H8 H9 H10
C11.52772.73061.83943.71712.39142.16372.16371.09381.0938
C21.52771.83942.73062.39143.71711.09381.09382.16372.1637
S32.73061.83944.39831.34665.12132.43612.43612.90672.9067
S41.83942.73064.39835.12131.34662.90672.90672.43612.4361
H53.71712.39141.34665.12136.06112.64432.64434.01094.0109
H62.39143.71715.12131.34666.06114.01094.01092.64432.6443
H72.16371.09382.43612.90672.64434.01091.78242.49903.0695
H82.16371.09382.43612.90672.64434.01091.78243.06952.4990
H91.09382.16372.90672.43614.01092.64432.49903.06951.7824
H101.09382.16372.90672.43614.01092.64433.06952.49901.7824

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 108.023 C1 C2 H7 110.153
C1 C2 H8 110.153 C1 S4 H6 96.052
C2 C1 S4 108.023 C2 C1 H9 110.153
C2 C1 H10 110.153 C2 S3 H5 96.052
S3 C2 H7 109.678 S3 C2 H8 109.678
S4 C1 H9 109.678 S4 C1 H10 109.678
H7 C2 H8 109.141 H9 C1 H10 109.141
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at TPSSh/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.451      
2 C -0.451      
3 S -0.081      
4 S -0.081      
5 H 0.107      
6 H 0.107      
7 H 0.213      
8 H 0.213      
9 H 0.213      
10 H 0.213      


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 7.071 -0.516 0.000
y -0.516 10.993 0.000
z 0.000 0.000 5.641


<r2> (average value of r2) Å2
<r2> 215.810
(<r2>)1/2 14.690