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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-835.659876
Energy at 298.15K 
HF Energy-835.215464
Nuclear repulsion energy141.600559
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 3158 2973 11.61      
2 A 2781 2618 4.73      
3 A 1511 1423 0.90      
4 A 1260 1187 1.41      
5 A 949 894 4.31      
6 A 667 628 3.03      
7 A 312 294 17.08      
8 A 247 232 4.66      
9 B 3220 3031 2.56      
10 B 2781 2618 12.05      
11 B 1334 1256 24.27      
12 B 1058 996 32.15      
13 B 803 756 18.30      
14 B 745 701 0.60      
15 B 262 246 37.38      

Unscaled Zero Point Vibrational Energy (zpe) 10544.2 cm-1
Scaled (by 0.9414) Zero Point Vibrational Energy (zpe) 9926.3 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/6-31G**
ABC
0.89054 0.10517 0.09841

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 0.779
S2 0.000 1.547 -0.180
S3 0.000 -1.547 -0.180
H4 0.876 -0.052 1.422
H5 -0.876 0.052 1.422
H6 1.106 1.277 -0.877
H7 -1.106 -1.277 -0.877

Atom - Atom Distances (Å)
  C1 S2 S3 H4 H5 H6 H7
C11.82001.82001.08791.08792.36532.3653
S21.82003.09352.42662.35991.33473.1113
S31.82003.09352.35992.42663.11131.3347
H41.08792.42662.35991.75552.66463.2730
H51.08792.35992.42661.75553.27302.6646
H62.36531.33473.11132.66463.27303.3781
H72.36533.11131.33473.27302.66463.3781

picture of Methanedithiol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 S2 H6 95.919 C1 S3 H7 95.919
S2 C1 S3 116.393 S2 C1 H4 110.586
S2 C1 H5 105.724 S3 C1 H4 105.724
S3 C1 H5 110.586 H4 C1 H5 107.584
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability