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: B3PW91/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2H 1Ag
Energy calculated at B3PW91/6-31G*
 hartrees
Energy at 0K-876.065687
Energy at 298.15K-876.071819
Nuclear repulsion energy202.014677
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 B3PW91/6-31G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 Ag 3087 2953 0.00      
2 Ag 2713 2595 0.00      
3 Ag 1516 1451 0.00      
4 Ag 1358 1299 0.00      
5 Ag 1116 1068 0.00      
6 Ag 906 867 0.00      
7 Ag 748 715 0.00      
8 Ag 280 268 0.00      
9 Au 3160 3023 10.73      
10 Au 1152 1102 5.12      
11 Au 790 756 4.40      
12 Au 145 139 26.44      
13 Au 82 78 34.61      
14 Bg 3138 3002 0.00      
15 Bg 1317 1260 0.00      
16 Bg 987 944 0.00      
17 Bg 149 143 0.00      
18 Bu 3095 2961 26.52      
19 Bu 2713 2596 37.68      
20 Bu 1517 1451 6.13      
21 Bu 1269 1214 57.35      
22 Bu 903 864 5.42      
23 Bu 728 697 7.52      
24 Bu 200 191 8.91      

Unscaled Zero Point Vibrational Energy (zpe) 16534.3 cm-1
Scaled (by 0.9567) Zero Point Vibrational Energy (zpe) 15818.3 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 B3PW91/6-31G*
ABC
0.83629 0.05053 0.04853

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-31G*

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.761 0.000
C2 0.000 -0.761 0.000
S3 1.742 -1.338 0.000
S4 -1.742 1.338 0.000
H5 1.466 -2.657 0.000
H6 -1.466 2.657 0.000
H7 -0.512 -1.139 0.890
H8 -0.512 -1.139 -0.890
H9 0.512 1.139 0.890
H10 0.512 1.139 -0.890

Atom - Atom Distances (Å)
  C1 C2 S3 S4 H5 H6 H7 H8 H9 H10
C11.52292.72841.83533.71942.39612.16002.16001.09411.0941
C21.52291.83532.72842.39613.71941.09411.09412.16002.1600
S32.72841.83534.39391.34755.12372.43192.43192.90562.9056
S41.83532.72844.39395.12371.34752.90562.90562.43192.4319
H53.71942.39611.34755.12376.06882.64722.64724.01384.0138
H62.39613.71945.12371.34756.06884.01384.01382.64722.6472
H72.16001.09412.43192.90562.64724.01381.78032.49743.0670
H82.16001.09412.43192.90562.64724.01381.78033.06702.4974
H91.09412.16002.90562.43194.01382.64722.49743.06701.7803
H101.09412.16002.90562.43194.01382.64723.06702.49741.7803

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 108.316 C1 C2 H7 110.183
C1 C2 H8 110.183 C1 S4 H6 96.465
C2 C1 S4 108.316 C2 C1 H9 110.183
C2 C1 H10 110.183 C2 S3 H5 96.465
S3 C2 H7 109.621 S3 C2 H8 109.621
S4 C1 H9 109.621 S4 C1 H10 109.621
H7 C2 H8 108.904 H9 C1 H10 108.904
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.476     -0.255
2 C -0.476     -0.278
3 S -0.077     -0.317
4 S -0.077     -0.317
5 H 0.112     0.203
6 H 0.112     0.198
7 H 0.220     0.194
8 H 0.220     0.194
9 H 0.220     0.190
10 H 0.220     0.190


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 0.014 -0.017 0.000 0.022


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 0.000 0.000 0.000
y 0.000 0.000 0.000
z 0.000 0.000 0.000


<r2> (average value of r2) Å2
<r2> 214.644
(<r2>)1/2 14.651