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All results from a given calculation for HSCH2SH (Methanedithiol)

using model chemistry: MP2/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at MP2/6-31G(2df,p)
 hartrees
Energy at 0K-835.726679
Energy at 298.15K 
HF Energy-835.230806
Nuclear repulsion energy142.264877
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 MP2/6-31G(2df,p)
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 235 222 3.54 5.19 0.51 0.68
2 A 309 292 14.09 3.04 0.59 0.74
3 A 662 625 3.85 13.14 0.16 0.27
4 A 920 869 4.83 6.80 0.36 0.53
5 A 1222 1154 0.51 11.48 0.67 0.80
6 A 1480 1397 0.91 12.82 0.75 0.86
7 A 2785 2630 0.18 94.51 0.12 0.21
8 A 3145 2970 2.84 77.11 0.09 0.17
9 B 255 241 40.28 0.17 0.75 0.86
10 B 729 688 1.01 1.02 0.75 0.86
11 B 802 758 20.18 6.54 0.75 0.86
12 B 1017 961 18.98 4.56 0.75 0.86
13 B 1278 1207 24.42 1.12 0.75 0.86
14 B 2784 2630 0.50 66.17 0.75 0.86
15 B 3214 3036 0.82 53.50 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 10417.9 cm-1
Scaled (by 0.9445) Zero Point Vibrational Energy (zpe) 9839.7 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 MP2/6-31G(2df,p)
ABC
0.88490 0.10692 0.09978

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-31G(2df,p)

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.784
S2 0.000 1.535 -0.179
S3 0.000 -1.535 -0.179
H4 0.880 -0.054 1.424
H5 -0.880 0.054 1.424
H6 1.084 1.241 -0.906
H7 -1.084 -1.241 -0.906

Atom - Atom Distances (Å)
  C1 S2 S3 H4 H5 H6 H7
C11.81231.81231.08951.08952.36012.3601
S21.81233.06962.42282.35341.33713.0669
S31.81233.06962.35342.42283.06691.3371
H41.08952.42282.35341.76432.67293.2699
H51.08952.35342.42281.76433.26992.6729
H62.36011.33713.06692.67293.26993.2948
H72.36013.06691.33713.26992.67293.2948

picture of Methanedithiol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 S2 H6 95.894 C1 S3 H7 95.894
S2 C1 S3 115.748 S2 C1 H4 110.737
S2 C1 H5 105.674 S3 C1 H4 105.674
S3 C1 H5 110.737 H4 C1 H5 108.121
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability