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All results from a given calculation for HSCH2SH (Methanedithiol)

using model chemistry: QCISD/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 QCISD/6-31G*
 hartrees
Energy at 0K-835.622282
Energy at 298.15K 
HF Energy-835.204069
Nuclear repulsion energy141.334083
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 QCISD/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 3121 2972 10.29      
2 A 2722 2592 6.96      
3 A 1510 1438 1.90      
4 A 1257 1197 1.41      
5 A 941 896 4.81      
6 A 666 634 3.30      
7 A 313 298 19.41      
8 A 250 238 4.95      
9 B 3178 3026 1.95      
10 B 2721 2591 17.23      
11 B 1333 1270 21.35      
12 B 1051 1001 29.96      
13 B 802 763 18.98      
14 B 747 711 0.79      
15 B 263 250 41.50      

Unscaled Zero Point Vibrational Energy (zpe) 10436.0 cm-1
Scaled (by 0.9523) Zero Point Vibrational Energy (zpe) 9938.2 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 QCISD/6-31G*
ABC
0.88357 0.10506 0.09830

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

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.781
S2 0.000 1.547 -0.180
S3 0.000 -1.547 -0.180
H4 0.881 -0.052 1.427
H5 -0.881 0.052 1.427
H6 1.116 1.278 -0.885
H7 -1.116 -1.278 -0.885

Atom - Atom Distances (Å)
  C1 S2 S3 H4 H5 H6 H7
C11.82131.82131.09351.09352.37762.3776
S21.82133.09462.43222.36511.34703.1183
S31.82133.09462.36512.43223.11831.3470
H41.09352.43222.36511.76442.67753.2915
H51.09352.36512.43221.76443.29152.6775
H62.37761.34703.11832.67753.29153.3929
H72.37763.11831.34703.29152.67753.3929

picture of Methanedithiol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 S2 H6 96.095 C1 S3 H7 96.095
S2 C1 S3 116.322 S2 C1 H4 110.615
S2 C1 H5 105.743 S3 C1 H4 105.743
S3 C1 H5 110.615 H4 C1 H5 107.562
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability