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: CISD/cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at CISD/cc-pVTZ
 hartrees
Energy at 0K-835.794408
Energy at 298.15K 
HF Energy-835.299684
Nuclear repulsion energy142.525510
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 CISD/cc-pVTZ
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 3185 2961 7.54      
2 A 2814 2617 0.13      
3 A 1517 1410 1.00      
4 A 1258 1170 0.41      
5 A 946 880 3.83      
6 A 676 628 3.17      
7 A 304 283 10.47      
8 A 229 213 5.04      
9 B 3243 3015 1.17      
10 B 2814 2616 0.39      
11 B 1321 1228 22.68      
12 B 1052 978 18.51      
13 B 823 765 17.34      
14 B 742 690 0.35      
15 B 249 232 34.86      

Unscaled Zero Point Vibrational Energy (zpe) 10586.4 cm-1
Scaled (by 0.9298) Zero Point Vibrational Energy (zpe) 9843.2 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 CISD/cc-pVTZ
ABC
0.89721 0.10684 0.09986

See section I.F.4 to change rotational constant units
Geometric Data calculated at CISD/cc-pVTZ

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.778
S2 0.000 1.535 -0.178
S3 0.000 -1.535 -0.178
H4 0.873 -0.051 1.413
H5 -0.873 0.051 1.413
H6 1.090 1.271 -0.895
H7 -1.090 -1.271 -0.895

Atom - Atom Distances (Å)
  C1 S2 S3 H4 H5 H6 H7
C11.80791.80791.08041.08042.36692.3669
S21.80793.06932.40972.34361.33093.0944
S31.80793.06932.34362.40973.09441.3309
H41.08042.40972.34361.74822.66893.2659
H51.08042.34362.40971.74823.26592.6689
H62.36691.33093.09442.66893.26593.3488
H72.36693.09441.33093.26592.66893.3488

picture of Methanedithiol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 S2 H6 96.714 C1 S3 H7 96.714
S2 C1 S3 116.176 S2 C1 H4 110.542
S2 C1 H5 105.695 S3 C1 H4 105.695
S3 C1 H5 110.542 H4 C1 H5 108.002
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability