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: M06-2X/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at M06-2X/6-31G(2df,p)
 hartrees
Energy at 0K-836.795637
Energy at 298.15K 
HF Energy-836.795637
Nuclear repulsion energy142.156571
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 M06-2X/6-31G(2df,p)
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 205 196 6.37 6.58 0.59 0.74
2 A 298 283 10.00 3.80 0.49 0.66
3 A 657 625 3.43 15.15 0.15 0.26
4 A 923 879 4.65 7.38 0.33 0.49
5 A 1202 1145 0.38 13.20 0.70 0.82
6 A 1453 1384 0.79 14.56 0.75 0.86
7 A 2728 2598 0.08 110.64 0.12 0.21
8 A 3113 2964 5.02 89.70 0.10 0.18
9 B 226 215 37.70 0.22 0.75 0.86
10 B 720 686 0.92 0.93 0.75 0.86
11 B 786 749 23.07 8.13 0.75 0.86
12 B 1017 969 20.19 5.07 0.75 0.86
13 B 1256 1196 25.84 1.34 0.75 0.86
14 B 2727 2598 0.13 77.99 0.75 0.86
15 B 3175 3024 0.58 63.60 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 10243.0 cm-1
Scaled (by 0.9524) Zero Point Vibrational Energy (zpe) 9755.4 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 M06-2X/6-31G(2df,p)
ABC
0.88698 0.10662 0.09961

See section I.F.4 to change rotational constant units
Geometric Data calculated at M06-2X/6-31G(2df,p)

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.782
S2 0.000 1.536 -0.179
S3 0.000 -1.536 -0.179
H4 0.881 -0.053 1.421
H5 -0.881 0.053 1.421
H6 1.095 1.253 -0.898
H7 -1.095 -1.253 -0.898

Atom - Atom Distances (Å)
  C1 S2 S3 H4 H5 H6 H7
C11.81221.81221.08971.08972.36472.3647
S21.81223.07292.42182.35291.34053.0817
S31.81223.07292.35292.42183.08171.3405
H41.08972.42182.35291.76492.67073.2747
H51.08972.35292.42181.76493.27472.6707
H62.36471.34053.08172.67073.27473.3281
H72.36473.08171.34053.27472.67073.3281

picture of Methanedithiol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 S2 H6 96.035 C1 S3 H7 96.035
S2 C1 S3 115.954 S2 C1 H4 110.654
S2 C1 H5 105.634 S3 C1 H4 105.634
S3 C1 H5 110.654 H4 C1 H5 108.152
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at M06-2X/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.270      
2 S -0.227      
3 S -0.227      
4 H 0.183      
5 H 0.183      
6 H 0.179      
7 H 0.179      


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 0.447 0.447
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.653 1.425 0.000
y 1.425 -38.676 0.000
z 0.000 0.000 -32.071
Traceless
 xyz
x 3.721 1.425 0.000
y 1.425 -6.814 0.000
z 0.000 0.000 3.093
Polar
3z2-r26.186
x2-y27.024
xy1.425
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.824 0.187 0.000
y 0.187 8.661 0.000
z 0.000 0.000 6.124


<r2> (average value of r2) Å2
<r2> 114.306
(<r2>)1/2 10.691