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All results from a given calculation for HSCH2SH (Methanedithiol)

using model chemistry: CISD/6-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at CISD/6-31G
 hartrees
Energy at 0K-835.328904
Energy at 298.15K 
HF Energy-835.112065
Nuclear repulsion energy136.897574
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 CISD/6-31G
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 3171 2974 7.75      
2 A 2531 2374 14.94      
3 A 1522 1427 2.16      
4 A 1243 1166 1.31      
5 A 891 835 5.44      
6 A 610 572 5.46      
7 A 289 271 29.28      
8 A 240 225 8.49      
9 B 3243 3042 0.56      
10 B 2528 2371 47.88      
11 B 1326 1243 22.95      
12 B 1019 956 32.54      
13 B 733 688 1.14      
14 B 728 683 27.63      
15 B 233 219 54.63      

Unscaled Zero Point Vibrational Energy (zpe) 10153.4 cm-1
Scaled (by 0.9378) Zero Point Vibrational Energy (zpe) 9521.8 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 CISD/6-31G
ABC
0.83258 0.09795 0.09163

See section I.F.4 to change rotational constant units
Geometric Data calculated at CISD/6-31G

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.816
S2 0.000 1.602 -0.187
S3 0.000 -1.602 -0.187
H4 0.888 -0.051 1.445
H5 -0.888 0.051 1.445
H6 1.149 1.352 -0.900
H7 -1.149 -1.352 -0.900

Atom - Atom Distances (Å)
  C1 S2 S3 H4 H5 H6 H7
C11.89031.89031.08951.08952.46852.4685
S21.89033.20462.48702.42071.37543.2495
S31.89033.20462.42072.48703.24951.3754
H41.08952.48702.42071.77872.74533.3681
H51.08952.42072.48701.77873.36812.7453
H62.46851.37543.24952.74533.36813.5497
H72.46853.24951.37543.36812.74533.5497

picture of Methanedithiol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 S2 H6 96.945 C1 S3 H7 96.945
S2 C1 S3 115.915 S2 C1 H4 110.243
S2 C1 H5 105.484 S3 C1 H4 105.484
S3 C1 H5 110.243 H4 C1 H5 109.426
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability