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All results from a given calculation for HSCH2SH (Methanedithiol)

using model chemistry: CCSD/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 CCSD/6-31G*
 hartrees
Energy at 0K-835.621656
Energy at 298.15K 
HF Energy-835.204092
Nuclear repulsion energy141.380961
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 CCSD/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 3125 2951 9.81      
2 A 2723 2572 6.72      
3 A 1511 1427 1.99      
4 A 1258 1188 1.39      
5 A 942 889 4.84      
6 A 668 630 3.27      
7 A 313 296 19.45      
8 A 250 236 4.99      
9 B 3182 3005 1.76      
10 B 2723 2571 16.59      
11 B 1335 1261 20.89      
12 B 1052 994 30.05      
13 B 804 759 18.28      
14 B 747 706 0.79      
15 B 263 248 41.53      

Unscaled Zero Point Vibrational Energy (zpe) 10447.3 cm-1
Scaled (by 0.9443) Zero Point Vibrational Energy (zpe) 9865.4 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 CCSD/6-31G*
ABC
0.88389 0.10514 0.09837

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

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.780
S2 0.000 1.547 -0.180
S3 0.000 -1.547 -0.180
H4 0.880 -0.052 1.426
H5 -0.880 0.052 1.426
H6 1.115 1.277 -0.886
H7 -1.115 -1.277 -0.886

Atom - Atom Distances (Å)
  C1 S2 S3 H4 H5 H6 H7
C11.82071.82071.09321.09322.37712.3771
S21.82073.09342.43142.36451.34693.1167
S31.82073.09342.36452.43143.11671.3469
H41.09322.43142.36451.76382.67723.2908
H51.09322.36452.43141.76383.29082.6772
H62.37711.34693.11672.67723.29083.3904
H72.37713.11671.34693.29082.67723.3904

picture of Methanedithiol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 S2 H6 96.099 C1 S3 H7 96.099
S2 C1 S3 116.312 S2 C1 H4 110.612
S2 C1 H5 105.754 S3 C1 H4 105.754
S3 C1 H5 110.612 H4 C1 H5 107.555
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability