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All results from a given calculation for HSCH2SH (Methanedithiol)

using model chemistry: QCISD/Def2TZVPP

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/Def2TZVPP
 hartrees
Energy at 0K-835.870220
Energy at 298.15K 
HF Energy-835.290178
Nuclear repulsion energy142.129685
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/Def2TZVPP
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 3108 3108 8.26      
2 A 2738 2738 0.25      
3 A 1473 1473 0.82      
4 A 1221 1221 0.53      
5 A 921 921 3.68      
6 A 654 654 2.79      
7 A 297 297 9.14      
8 A 220 220 4.52      
9 B 3164 3164 1.44      
10 B 2737 2737 0.69      
11 B 1282 1282 21.01      
12 B 1022 1022 17.76      
13 B 793 793 16.33      
14 B 722 722 0.39      
15 B 241 241 33.29      

Unscaled Zero Point Vibrational Energy (zpe) 10295.3 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 10295.3 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/Def2TZVPP
ABC
0.89019 0.10636 0.09939

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/Def2TZVPP

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.781
S2 0.000 1.538 -0.179
S3 0.000 -1.538 -0.179
H4 0.878 -0.053 1.419
H5 -0.878 0.053 1.419
H6 1.092 1.261 -0.897
H7 -1.092 -1.261 -0.897

Atom - Atom Distances (Å)
  C1 S2 S3 H4 H5 H6 H7
C11.81311.81311.08671.08672.36622.3662
S21.81313.07672.42022.35151.33603.0898
S31.81313.07672.35152.42023.08981.3360
H41.08672.42022.35151.75902.67193.2718
H51.08672.35152.42021.75903.27182.6719
H62.36621.33603.08982.67193.27183.3368
H72.36623.08981.33603.27182.67193.3368

picture of Methanedithiol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 S2 H6 96.241 C1 S3 H7 96.241
S2 C1 S3 116.090 S2 C1 H4 110.638
S2 C1 H5 105.624 S3 C1 H4 105.624
S3 C1 H5 110.638 H4 C1 H5 108.052
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability