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All results from a given calculation for HSCH2SH (Methanedithiol)

using model chemistry: MP2/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at MP2/3-21G
 hartrees
Energy at 0K-831.283899
Energy at 298.15K 
HF Energy-831.074243
Nuclear repulsion energy136.563122
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 MP2/3-21G
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 242 231 5.58 22.21 0.64 0.78
2 A 284 271 32.31 22.63 0.73 0.84
3 A 584 558 5.41 18.16 0.17 0.29
4 A 887 847 5.21 21.36 0.69 0.82
5 A 1237 1181 1.27 26.78 0.74 0.85
6 A 1537 1467 2.41 19.50 0.75 0.86
7 A 2478 2365 7.52 126.10 0.19 0.32
8 A 3175 3031 4.05 76.69 0.12 0.21
9 B 244 233 55.22 6.49 0.75 0.86
10 B 700 668 29.90 9.35 0.75 0.86
11 B 726 693 0.53 8.60 0.75 0.86
12 B 1007 961 28.84 10.75 0.75 0.86
13 B 1302 1242 20.60 2.02 0.75 0.86
14 B 2478 2365 24.82 97.43 0.75 0.86
15 B 3247 3100 0.01 57.12 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 10063.8 cm-1
Scaled (by 0.9545) Zero Point Vibrational Energy (zpe) 9605.9 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 MP2/3-21G
ABC
0.81698 0.09779 0.09132

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/3-21G

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.830
S2 0.000 1.604 -0.191
S3 0.000 -1.604 -0.191
H4 0.890 -0.052 1.452
H5 -0.890 0.052 1.452
H6 1.151 1.336 -0.888
H7 -1.151 -1.336 -0.888

Atom - Atom Distances (Å)
  C1 S2 S3 H4 H5 H6 H7
C11.90131.90131.08771.08772.46192.4619
S21.90133.20802.49702.42951.37213.2335
S31.90133.20802.42952.49703.23351.3721
H41.08772.49702.42951.78392.73343.3607
H51.08772.42952.49701.78393.36072.7334
H62.46191.37213.23352.73343.36073.5273
H72.46193.23351.37213.36072.73343.5273

picture of Methanedithiol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 S2 H6 96.202 C1 S3 H7 96.202
S2 C1 S3 115.055 S2 C1 H4 110.334
S2 C1 H5 105.486 S3 C1 H4 105.486
S3 C1 H5 110.334 H4 C1 H5 110.183
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability