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All results from a given calculation for HSCH2SH (Methanedithiol)

using model chemistry: QCISD/daug-cc-pVDZ

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/daug-cc-pVDZ
 hartrees
Energy at 0K-835.751235
Energy at 298.15K 
HF Energy-835.260888
Nuclear repulsion energy140.471826
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/daug-cc-pVDZ
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 3090 3090 8.90      
2 A 2706 2706 0.36      
3 A 1448 1448 0.36      
4 A 1208 1208 0.56      
5 A 904 904 3.74      
6 A 643 643 2.93      
7 A 292 292 7.20      
8 A 220 220 3.91      
9 B 3150 3150 1.77      
10 B 2705 2705 1.40      
11 B 1260 1260 25.96      
12 B 1007 1007 16.06      
13 B 776 776 20.64      
14 B 715 715 0.55      
15 B 234 234 31.18      

Unscaled Zero Point Vibrational Energy (zpe) 10177.7 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 10177.7 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/daug-cc-pVDZ
ABC
0.86617 0.10404 0.09722

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/daug-cc-pVDZ

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.792
S2 0.000 1.555 -0.182
S3 0.000 -1.555 -0.182
H4 0.891 -0.052 1.436
H5 -0.891 0.052 1.436
H6 1.113 1.274 -0.900
H7 -1.113 -1.274 -0.900

Atom - Atom Distances (Å)
  C1 S2 S3 H4 H5 H6 H7
C11.83491.83491.10021.10022.39262.3926
S21.83493.11042.44792.38131.35413.1239
S31.83493.11042.38132.44793.12391.3541
H41.10022.44792.38131.78412.69503.3113
H51.10022.38132.44791.78413.31132.6950
H62.39261.35413.12392.69503.31133.3833
H72.39263.12391.35413.31132.69503.3833

picture of Methanedithiol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 S2 H6 96.054 C1 S3 H7 96.054
S2 C1 S3 115.892 S2 C1 H4 110.512
S2 C1 H5 105.714 S3 C1 H4 105.714
S3 C1 H5 110.512 H4 C1 H5 108.355
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability