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: PBEPBE/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 PBEPBE/STO-3G
 hartrees
Energy at 0K-827.150707
Energy at 298.15K 
HF Energy-827.150707
Nuclear repulsion energy139.260108
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 PBEPBE/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 228 209 7.78 20.11 0.70 0.83
2 A 302 276 10.07 6.82 0.64 0.78
3 A 721 659 1.04 9.23 0.14 0.24
4 A 997 911 0.15 10.71 0.49 0.65
5 A 1314 1200 1.27 18.91 0.75 0.86
6 A 1604 1465 0.55 15.13 0.75 0.86
7 A 2881 2632 6.44 84.15 0.18 0.31
8 A 3239 2960 7.81 40.67 0.14 0.25
9 B 277 253 20.17 6.82 0.75 0.86
10 B 765 699 0.87 0.90 0.75 0.86
11 B 856 782 36.97 5.75 0.75 0.86
12 B 1123 1026 18.49 5.07 0.75 0.86
13 B 1367 1249 28.29 5.60 0.75 0.86
14 B 2881 2632 49.54 35.19 0.75 0.86
15 B 3351 3061 2.13 32.34 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 10952.4 cm-1
Scaled (by 0.9136) Zero Point Vibrational Energy (zpe) 10006.1 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 PBEPBE/STO-3G
ABC
0.89215 0.10051 0.09503

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

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.760
S2 0.000 1.578 -0.185
S3 0.000 -1.578 -0.185
H4 0.889 -0.051 1.423
H5 -0.889 0.051 1.423
H6 1.237 1.365 -0.737
H7 -1.237 -1.365 -0.737

Atom - Atom Distances (Å)
  C1 S2 S3 H4 H5 H6 H7
C11.83991.83991.11021.11022.37392.3739
S21.83993.15652.45582.38951.37113.2401
S31.83993.15652.38952.45583.24011.3711
H41.11022.45582.38951.78192.60573.3035
H51.11022.38952.45581.78193.30352.6057
H62.37391.37113.24012.60573.30353.6847
H72.37393.24011.37113.30352.60573.6847

picture of Methanedithiol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 S2 H6 94.212 C1 S3 H7 94.212
S2 C1 S3 118.141 S2 C1 H4 110.242
S2 C1 H5 105.505 S3 C1 H4 105.505
S3 C1 H5 110.242 H4 C1 H5 106.742
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.304      
2 S 0.078      
3 S 0.078      
4 H 0.084      
5 H 0.084      
6 H -0.011      
7 H -0.011      


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 0.180 0.180
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -27.829 1.756 0.000
y 1.756 -32.504 0.000
z 0.000 0.000 -29.166
Traceless
 xyz
x 3.006 1.756 0.000
y 1.756 -4.006 0.000
z 0.000 0.000 1.000
Polar
3z2-r22.001
x2-y24.675
xy1.756
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.788 0.176 0.000
y 0.176 4.015 0.000
z 0.000 0.000 2.131


<r2> (average value of r2) Å2
<r2> 116.419
(<r2>)1/2 10.790