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All results from a given calculation for HSCH2SH (Methanedithiol)

using model chemistry: MP3=FULL/3-21G*

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=FULL/3-21G*
 hartrees
Energy at 0K-831.695031
Energy at 298.15K 
HF Energy-831.297151
Nuclear repulsion energy141.061707
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=FULL/3-21G*
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 3123 3123 7.51      
2 A 2758 2758 2.59      
3 A 1554 1554 3.43      
4 A 1277 1277 1.15      
5 A 957 957 5.45      
6 A 643 643 3.76      
7 A 308 308 20.22      
8 A 252 252 6.32      
9 B 3174 3174 0.81      
10 B 2757 2757 6.21      
11 B 1343 1343 13.78      
12 B 1068 1068 25.47      
13 B 766 766 0.95      
14 B 751 751 20.77      
15 B 262 262 45.63      

Unscaled Zero Point Vibrational Energy (zpe) 10497.0 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 10497.0 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=FULL/3-21G*
ABC
0.86422 0.10517 0.09811

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3=FULL/3-21G*

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.797
S2 0.000 1.547 -0.184
S3 0.000 -1.547 -0.184
H4 0.883 -0.049 1.437
H5 -0.883 0.049 1.437
H6 1.104 1.265 -0.890
H7 -1.104 -1.265 -0.890

Atom - Atom Distances (Å)
  C1 S2 S3 H4 H5 H6 H7
C11.83161.83161.09201.09202.38052.3805
S21.83163.09402.44002.37731.34083.1027
S31.83163.09402.37732.44003.10271.3408
H41.09202.44002.37731.76952.68183.2934
H51.09202.37732.44001.76953.29342.6818
H62.38051.34083.10272.68183.29343.3585
H72.38053.10271.34083.29342.68183.3585

picture of Methanedithiol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 S2 H6 96.008 C1 S3 H7 96.008
S2 C1 S3 115.258 S2 C1 H4 110.585
S2 C1 H5 106.025 S3 C1 H4 106.025
S3 C1 H5 110.585 H4 C1 H5 108.232
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability