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 HSCH2SH (Methanedithiol)

using model chemistry: TPSSh/STO-3G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at TPSSh/STO-3G
 hartrees
Energy at 0K-827.638400
Energy at 298.15K 
HF Energy-827.638400
Nuclear repulsion energy139.710092
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/STO-3G
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A 239 239 6.50 19.32 0.71 0.83
2 A 306 306 10.84 7.21 0.66 0.79
3 A 735 735 1.15 9.85 0.13 0.22
4 A 1019 1019 0.09 10.09 0.52 0.68
5 A 1346 1346 1.12 20.46 0.75 0.86
6 A 1653 1653 0.06 15.57 0.75 0.86
7 A 2973 2973 5.68 87.27 0.19 0.31
8 A 3315 3315 6.54 41.29 0.14 0.25
9 B 282 282 18.68 6.80 0.75 0.86
10 B 776 776 0.48 0.86 0.75 0.86
11 B 883 883 26.90 7.58 0.75 0.86
12 B 1153 1153 21.81 4.97 0.75 0.86
13 B 1402 1402 30.85 4.56 0.75 0.86
14 B 2973 2973 44.90 36.81 0.75 0.86
15 B 3426 3426 2.14 33.21 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 11240.1 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 11240.1 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/STO-3G
ABC
0.89573 0.10117 0.09559

See section I.F.4 to change rotational constant units
Geometric Data calculated at TPSSh/STO-3G

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.761
S2 0.000 1.573 -0.186
S3 0.000 -1.573 -0.186
H4 0.886 -0.047 1.420
H5 -0.886 0.047 1.420
H6 1.227 1.363 -0.734
H7 -1.227 -1.363 -0.734

Atom - Atom Distances (Å)
  C1 S2 S3 H4 H5 H6 H7
C11.83591.83591.10511.10512.36602.3660
S21.83593.14642.44662.38581.36023.2292
S31.83593.14642.38582.44663.22921.3602
H41.10512.44662.38581.77442.59673.2918
H51.10512.38582.44661.77443.29182.5967
H62.36601.36023.22922.59673.29183.6677
H72.36603.22921.36023.29182.59673.6677

picture of Methanedithiol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 S2 H6 94.330 C1 S3 H7 94.330
S2 C1 S3 117.946 S2 C1 H4 110.093
S2 C1 H5 105.733 S3 C1 H4 105.733
S3 C1 H5 110.093 H4 C1 H5 106.793
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at TPSSh/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.286      
2 S 0.090      
3 S 0.090      
4 H 0.075      
5 H 0.075      
6 H -0.022      
7 H -0.022      


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 0.187 0.187
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 2.778 0.177 0.000
y 0.177 3.894 0.000
z 0.000 0.000 2.143


<r2> (average value of r2) Å2
<r2> 115.910
(<r2>)1/2 10.766