return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for HSCH2SH (Methanedithiol)

using model chemistry: QCISD/aug-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/aug-cc-pVDZ
 hartrees
Energy at 0K-835.748634
Energy at 298.15K 
HF Energy-835.260147
Nuclear repulsion energy140.486703
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/aug-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 3092 2995 8.75      
2 A 2706 2621 0.36      
3 A 1447 1402 0.35      
4 A 1206 1168 0.55      
5 A 904 876 3.82      
6 A 642 622 3.09      
7 A 294 285 7.67      
8 A 225 218 3.53      
9 B 3153 3054 1.79      
10 B 2705 2621 1.44      
11 B 1263 1224 25.73      
12 B 1006 974 16.24      
13 B 775 751 20.58      
14 B 717 695 0.57      
15 B 234 226 32.01      

Unscaled Zero Point Vibrational Energy (zpe) 10184.3 cm-1
Scaled (by 0.9687) Zero Point Vibrational Energy (zpe) 9865.5 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/aug-cc-pVDZ
ABC
0.86392 0.10418 0.09729

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

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.794
S2 0.000 1.554 -0.182
S3 0.000 -1.554 -0.182
H4 0.891 -0.052 1.437
H5 -0.891 0.052 1.437
H6 1.109 1.268 -0.905
H7 -1.109 -1.268 -0.905

Atom - Atom Distances (Å)
  C1 S2 S3 H4 H5 H6 H7
C11.83531.83531.10051.10052.39222.3922
S21.83533.10872.44872.38221.35433.1173
S31.83533.10872.38222.44873.11731.3543
H41.10052.44872.38221.78542.69713.3114
H51.10052.38222.44871.78543.31142.6971
H62.39221.35433.11732.69713.31143.3688
H72.39223.11731.35433.31142.69713.3688

picture of Methanedithiol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 S2 H6 96.007 C1 S3 H7 96.007
S2 C1 S3 115.755 S2 C1 H4 110.529
S2 C1 H5 105.734 S3 C1 H4 105.734
S3 C1 H5 110.529 H4 C1 H5 108.428
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability