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: MP2/aug-cc-pVQZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at MP2/aug-cc-pVQZ
 hartrees
Energy at 0K-835.892911
Energy at 298.15K 
HF Energy-835.311719
Nuclear repulsion energy142.746930
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 MP2/aug-cc-pVQZ
Rotational Constants (cm-1) from geometry optimized at MP2/aug-cc-pVQZ
ABC
0.88754 0.10783 0.10057

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/aug-cc-pVQZ

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.784
S2 0.000 1.528 -0.179
S3 0.000 -1.528 -0.179
H4 0.879 -0.054 1.421
H5 -0.879 0.054 1.421
H6 1.078 1.228 -0.909
H7 -1.078 -1.228 -0.909

Atom - Atom Distances (Å)
  C1 S2 S3 H4 H5 H6 H7
C11.80641.80641.08641.08642.35292.3529
S21.80643.05692.41542.34631.33593.0486
S31.80643.05692.34632.41543.04861.3359
H41.08642.41542.34631.76042.66673.2610
H51.08642.34632.41541.76043.26102.6667
H62.35291.33593.04862.66673.26103.2681
H72.35293.04861.33593.26102.66673.2681

picture of Methanedithiol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 S2 H6 95.804 C1 S3 H7 95.804
S2 C1 S3 115.588 S2 C1 H4 110.753
S2 C1 H5 105.694 S3 C1 H4 105.694
S3 C1 H5 110.753 H4 C1 H5 108.227
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability