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: MP3/TZVP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at MP3/TZVP
 hartrees
Energy at 0K-835.737067
Energy at 298.15K 
HF Energy-835.270339
Nuclear repulsion energy141.241415
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 MP3/TZVP
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A 3162 2957 10.94      
2 A 2767 2588 1.42      
3 A 1469 1374 0.39      
4 A 1230 1150 0.89      
5 A 928 868 4.61      
6 A 659 616 3.53      
7 A 303 284 13.56      
8 A 229 214 6.07      
9 B 3225 3016 1.82      
10 B 2766 2587 5.26      
11 B 1323 1237 27.98      
12 B 1035 968 24.34      
13 B 794 743 19.83      
14 B 730 683 0.69      
15 B 258 241 40.21      

Unscaled Zero Point Vibrational Energy (zpe) 10438.7 cm-1
Scaled (by 0.9352) 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 MP3/TZVP
ABC
0.89130 0.10440 0.09778

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3/TZVP

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.779
S2 0.000 1.552 -0.180
S3 0.000 -1.552 -0.180
H4 0.877 -0.053 1.415
H5 -0.877 0.053 1.415
H6 1.111 1.285 -0.879
H7 -1.111 -1.285 -0.879

Atom - Atom Distances (Å)
  C1 S2 S3 H4 H5 H6 H7
C11.82451.82451.08491.08492.37342.3734
S21.82453.10472.42712.35801.33963.1259
S31.82453.10472.35802.42713.12591.3396
H41.08492.42712.35801.75802.66583.2759
H51.08492.35802.42711.75803.27592.6658
H62.37341.33963.12592.66583.27593.3964
H72.37343.12591.33963.27592.66583.3964

picture of Methanedithiol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 S2 H6 95.982 C1 S3 H7 95.982
S2 C1 S3 116.605 S2 C1 H4 110.473
S2 C1 H5 105.441 S3 C1 H4 105.441
S3 C1 H5 110.473 H4 C1 H5 108.225
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability