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All results from a given calculation for HSCH2SH (Methanedithiol)

using model chemistry: QCISD(T)/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(T)/6-31G*
 hartrees
Energy at 0K-835.634441
Energy at 298.15K 
HF Energy-835.203855
Nuclear repulsion energy141.106215
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)/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 3103 2977        
2 A 2702 2592        
3 A 1500 1439        
4 A 1246 1195        
5 A 932 894        
6 A 657 630        
7 A 312 299        
8 A 247 237        
9 B 3161 3032        
10 B 2701 2591        
11 B 1322 1268        
12 B 1042 999        
13 B 787 755        
14 B 739 709        
15 B 261 250        

Unscaled Zero Point Vibrational Energy (zpe) 10354.8 cm-1
Scaled (by 0.9593) Zero Point Vibrational Energy (zpe) 9933.4 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 QCISD(T)/6-31G*
ABC
0.87915 0.10478 0.09800

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

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.783
S2 0.000 1.550 -0.181
S3 0.000 -1.550 -0.181
H4 0.882 -0.053 1.430
H5 -0.882 0.053 1.430
H6 1.116 1.276 -0.888
H7 -1.116 -1.276 -0.888

Atom - Atom Distances (Å)
  C1 S2 S3 H4 H5 H6 H7
C11.82501.82501.09491.09492.38002.3800
S21.82503.09902.43682.36911.34893.1186
S31.82503.09902.36912.43683.11861.3489
H41.09492.43682.36911.76772.68103.2951
H51.09492.36912.43681.76773.29512.6810
H62.38001.34893.11862.68103.29513.3894
H72.38003.11861.34893.29512.68103.3894

picture of Methanedithiol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 S2 H6 95.993 C1 S3 H7 95.993
S2 C1 S3 116.219 S2 C1 H4 110.643
S2 C1 H5 105.729 S3 C1 H4 105.729
S3 C1 H5 110.643 H4 C1 H5 107.654
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability