return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
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All results from a given calculation for HSCH2SH (Methanedithiol)

using model chemistry: MP2=FULL/6-311G**

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=FULL/6-311G**
 hartrees
Energy at 0K-835.955500
Energy at 298.15K 
HF Energy-835.270680
Nuclear repulsion energy142.042027
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=FULL/6-311G**
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 243 230 7.74 10.33 0.66 0.80
2 A 309 293 14.22 8.95 0.68 0.81
3 A 670 635 2.27 12.80 0.16 0.27
4 A 934 886 5.52 6.24 0.45 0.62
5 A 1246 1182 2.36 12.97 0.66 0.79
6 A 1451 1376 1.00 12.67 0.73 0.85
7 A 2806 2661 0.33 134.37 0.16 0.27
8 A 3134 2973 9.11 97.93 0.09 0.17
9 B 265 251 37.85 2.57 0.75 0.86
10 B 729 692 0.92 0.65 0.75 0.86
11 B 809 767 24.85 8.79 0.75 0.86
12 B 1039 986 36.31 4.59 0.75 0.86
13 B 1315 1248 26.50 0.98 0.75 0.86
14 B 2805 2661 1.65 90.18 0.75 0.86
15 B 3193 3029 1.22 64.08 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 10473.5 cm-1
Scaled (by 0.9486) Zero Point Vibrational Energy (zpe) 9935.2 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=FULL/6-311G**
ABC
0.90343 0.10558 0.09905

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-311G**

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.768
S2 0.000 1.543 -0.180
S3 0.000 -1.543 -0.180
H4 0.877 -0.054 1.414
H5 -0.877 0.054 1.414
H6 1.130 1.288 -0.843
H7 -1.130 -1.288 -0.843

Atom - Atom Distances (Å)
  C1 S2 S3 H4 H5 H6 H7
C11.81061.81061.09031.09032.35222.3522
S21.81063.08552.42032.35071.33483.1196
S31.81063.08552.35072.42033.11961.3348
H41.09032.42032.35071.75632.63863.2628
H51.09032.35072.42031.75633.26282.6386
H62.35221.33483.11962.63863.26283.4270
H72.35223.11961.33483.26282.63863.4270

picture of Methanedithiol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 S2 H6 95.616 C1 S3 H7 95.616
S2 C1 S3 116.877 S2 C1 H4 110.626
S2 C1 H5 105.556 S3 C1 H4 105.556
S3 C1 H5 110.626 H4 C1 H5 107.304
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability