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All results from a given calculation for HSCH2SH (Methanedithiol)

using model chemistry: MP2/cc-pVQZ

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/cc-pVQZ
 hartrees
Energy at 0K-835.886735
Energy at 298.15K 
HF Energy-835.311230
Nuclear repulsion energy142.763401
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/cc-pVQZ
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 222 210 3.28 4.39 0.57 0.73
2 A 302 286 8.68 3.06 0.48 0.64
3 A 660 626 3.12 12.78 0.12 0.21
4 A 916 869 4.29 5.54 0.15 0.25
5 A 1212 1149 0.48 4.46 0.65 0.78
6 A 1464 1389 1.11 8.49 0.71 0.83
7 A 2763 2620 0.40 124.84 0.07 0.12
8 A 3114 2953 4.58 106.98 0.06 0.11
9 B 241 228 35.26 0.31 0.75 0.86
10 B 724 687 0.69 0.46 0.75 0.86
11 B 799 758 17.93 5.63 0.75 0.86
12 B 1009 956 16.78 1.47 0.75 0.86
13 B 1263 1198 20.84 0.05 0.75 0.86
14 B 2762 2620 0.48 57.35 0.75 0.86
15 B 3179 3015 1.51 54.51 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 10314.4 cm-1
Scaled (by 0.9484) Zero Point Vibrational Energy (zpe) 9782.2 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/cc-pVQZ
ABC
0.88865 0.10782 0.10056

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/cc-pVQZ

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.783
S2 0.000 1.529 -0.179
S3 0.000 -1.529 -0.179
H4 0.878 -0.054 1.420
H5 -0.878 0.054 1.420
H6 1.077 1.228 -0.909
H7 -1.077 -1.228 -0.909

Atom - Atom Distances (Å)
  C1 S2 S3 H4 H5 H6 H7
C11.80611.80611.08611.08612.35192.3519
S21.80613.05722.41542.34551.33543.0483
S31.80613.05722.34552.41543.04831.3354
H41.08612.41542.34551.75922.66663.2596
H51.08612.34552.41541.75923.25962.6666
H62.35191.33543.04832.66663.25963.2666
H72.35193.04831.33543.25962.66663.2666

picture of Methanedithiol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 S2 H6 95.783 C1 S3 H7 95.783
S2 C1 S3 115.637 S2 C1 H4 110.787
S2 C1 H5 105.667 S3 C1 H4 105.667
S3 C1 H5 110.787 H4 C1 H5 108.156
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability