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All results from a given calculation for HSCH2SH (Methanedithiol)

using model chemistry: CID/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 CID/3-21G
 hartrees
Energy at 0K-831.293885
Energy at 298.15K 
HF Energy-831.074582
Nuclear repulsion energy136.929525
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 CID/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 3191 2972 4.70      
2 A 2486 2316 8.88      
3 A 1542 1437 3.03      
4 A 1246 1161 1.02      
5 A 902 841 5.26      
6 A 597 556 5.54      
7 A 282 263 30.38      
8 A 245 228 8.17      
9 B 3259 3036 0.02      
10 B 2484 2314 28.93      
11 B 1312 1223 20.19      
12 B 1022 953 29.46      
13 B 734 684 0.60      
14 B 717 668 27.18      
15 B 239 223 53.88      

Unscaled Zero Point Vibrational Energy (zpe) 10129.9 cm-1
Scaled (by 0.9316) Zero Point Vibrational Energy (zpe) 9437.0 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 CID/3-21G
ABC
0.82004 0.09839 0.09189

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

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.827
S2 0.000 1.599 -0.191
S3 0.000 -1.599 -0.191
H4 0.888 -0.049 1.451
H5 -0.888 0.049 1.451
H6 1.154 1.342 -0.884
H7 -1.154 -1.342 -0.884

Atom - Atom Distances (Å)
  C1 S2 S3 H4 H5 H6 H7
C11.89531.89531.08621.08622.46212.4621
S21.89533.19732.48952.42571.37033.2341
S31.89533.19732.42572.48953.23411.3703
H41.08622.48952.42571.77912.73103.3605
H51.08622.42572.48951.77913.36052.7310
H62.46211.37033.23412.73103.36053.5394
H72.46213.23411.37033.36052.73103.5394

picture of Methanedithiol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 S2 H6 96.546 C1 S3 H7 96.546
S2 C1 S3 115.022 S2 C1 H4 110.264
S2 C1 H5 105.670 S3 C1 H4 105.670
S3 C1 H5 110.264 H4 C1 H5 109.966
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability