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All results from a given calculation for HSCH2SH (Methanedithiol)

using model chemistry: QCISD(T)/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(T)/cc-pVDZ
 hartrees
Energy at 0K-835.727221
Energy at 298.15K 
HF Energy-835.251634
Nuclear repulsion energy140.354352
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(T)/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 3085 2940        
2 A 2716 2588        
3 A 1444 1376        
4 A 1196 1139        
5 A 901 858        
6 A 636 606        
7 A 299 285        
8 A 227 217        
9 B 3148 3001        
10 B 2715 2588        
11 B 1254 1195        
12 B 1004 957        
13 B 769 733        
14 B 710 676        
15 B 259 247        

Unscaled Zero Point Vibrational Energy (zpe) 10180.5 cm-1
Scaled (by 0.9531) Zero Point Vibrational Energy (zpe) 9703.1 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(T)/cc-pVDZ
ABC
0.86965 0.10368 0.09695

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

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.788
S2 0.000 1.558 -0.182
S3 0.000 -1.558 -0.182
H4 0.891 -0.057 1.438
H5 -0.891 0.057 1.438
H6 1.114 1.267 -0.894
H7 -1.114 -1.267 -0.894

Atom - Atom Distances (Å)
  C1 S2 S3 H4 H5 H6 H7
C11.83541.83541.10431.10432.38292.3829
S21.83543.11632.45442.38151.35403.1196
S31.83543.11632.38152.45443.11961.3540
H41.10432.45442.38151.78622.69083.3054
H51.10432.38152.45441.78623.30542.6908
H62.38291.35403.11962.69083.30543.3745
H72.38293.11961.35403.30542.69083.3745

picture of Methanedithiol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 S2 H6 95.498 C1 S3 H7 95.498
S2 C1 S3 116.198 S2 C1 H4 110.746
S2 C1 H5 105.506 S3 C1 H4 105.506
S3 C1 H5 110.746 H4 C1 H5 107.957
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability