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All results from a given calculation for HSCH2SH (Methanedithiol)

using model chemistry: MP2/CEP-31G*

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/CEP-31G*
 hartrees
Energy at 0K-28.046836
Energy at 298.15K 
HF Energy-27.678554
Nuclear repulsion energy38.710805
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/CEP-31G*
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 245 232 6.03 15.41 0.64 0.78
2 A 309 294 25.78 13.74 0.72 0.83
3 A 666 632 5.29 18.37 0.14 0.24
4 A 924 877 4.96 10.22 0.52 0.68
5 A 1234 1171 1.22 21.35 0.73 0.85
6 A 1480 1405 1.34 15.07 0.73 0.84
7 A 2763 2624 2.32 133.51 0.16 0.28
8 A 3138 2979 18.24 97.68 0.09 0.17
9 B 265 252 49.80 5.25 0.75 0.86
10 B 740 703 1.61 1.24 0.75 0.86
11 B 801 760 30.80 10.72 0.75 0.86
12 B 1036 984 29.35 6.29 0.75 0.86
13 B 1307 1241 31.83 1.88 0.75 0.86
14 B 2763 2624 9.03 94.80 0.75 0.86
15 B 3216 3053 3.95 59.17 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 10443.7 cm-1
Scaled (by 0.9494) Zero Point Vibrational Energy (zpe) 9915.3 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 MP2/CEP-31G*
ABC
0.87006 0.10366 0.09703

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/CEP-31G*

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.788
S2 0.000 1.557 -0.183
S3 0.000 -1.557 -0.183
H4 0.891 -0.054 1.433
H5 -0.891 0.054 1.433
H6 1.132 1.296 -0.875
H7 -1.132 -1.296 -0.875

Atom - Atom Distances (Å)
  C1 S2 S3 H4 H5 H6 H7
C11.83481.83481.10151.10152.39322.3932
S21.83483.11442.44952.37941.35273.1469
S31.83483.11442.37942.44953.14691.3527
H41.10152.44952.37941.78612.68473.3110
H51.10152.37942.44951.78613.31102.6847
H62.39321.35273.14692.68473.31103.4419
H72.39323.14691.35273.31102.68473.4419

picture of Methanedithiol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 S2 H6 96.144 C1 S3 H7 96.144
S2 C1 S3 116.144 S2 C1 H4 110.576
S2 C1 H5 105.526 S3 C1 H4 105.526
S3 C1 H5 110.576 H4 C1 H5 108.345
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability