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All results from a given calculation for HSCH2SH (Methanedithiol)

using model chemistry: CISD/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at CISD/6-311G*
 hartrees
Energy at 0K-835.639298
Energy at 298.15K 
HF Energy-835.256879
Nuclear repulsion energy141.892825
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 CISD/6-311G*
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 3171 2934 11.23      
2 A 2724 2521 2.61      
3 A 1520 1406 2.11      
4 A 1285 1189 2.46      
5 A 952 880 5.82      
6 A 678 627 2.95      
7 A 311 287 18.10      
8 A 253 234 8.65      
9 B 3226 2985 1.67      
10 B 2723 2520 7.62      
11 B 1357 1256 21.90      
12 B 1072 992 37.73      
13 B 820 759 24.56      
14 B 746 690 0.91      
15 B 265 245 41.98      

Unscaled Zero Point Vibrational Energy (zpe) 10550.4 cm-1
Scaled (by 0.9253) Zero Point Vibrational Energy (zpe) 9762.3 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 CISD/6-311G*
ABC
0.89927 0.10547 0.09890

See section I.F.4 to change rotational constant units
Geometric Data calculated at CISD/6-311G*

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.771
S2 0.000 1.543 -0.179
S3 0.000 -1.543 -0.179
H4 0.874 -0.051 1.414
H5 -0.874 0.051 1.414
H6 1.132 1.305 -0.856
H7 -1.132 -1.305 -0.856

Atom - Atom Distances (Å)
  C1 S2 S3 H4 H5 H6 H7
C11.81231.81231.08601.08602.37342.3734
S21.81233.08642.41682.35141.34033.1390
S31.81233.08642.35142.41683.13901.3403
H41.08602.41682.35141.75072.65663.2789
H51.08602.35142.41681.75073.27892.6566
H62.37341.34033.13902.65663.27893.4555
H72.37343.13901.34033.27892.65663.4555

picture of Methanedithiol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 S2 H6 96.530 C1 S3 H7 96.530
S2 C1 S3 116.754 S2 C1 H4 110.482
S2 C1 H5 105.707 S3 C1 H4 105.707
S3 C1 H5 110.482 H4 C1 H5 107.426
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability