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: CCD/6-311+G(3df,2p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at CCD/6-311+G(3df,2p)
 hartrees
Energy at 0K-835.857014
Energy at 298.15K 
HF Energy-835.290127
Nuclear repulsion energy142.299134
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 CCD/6-311+G(3df,2p)
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 3109 2932 5.83      
2 A 2732 2577 0.01      
3 A 1487 1402 1.30      
4 A 1232 1162 0.46      
5 A 929 876 3.77      
6 A 663 626 2.31      
7 A 298 281 7.53      
8 A 225 213 4.36      
9 B 3166 2986 1.38      
10 B 2732 2576 0.04      
11 B 1293 1219 20.47      
12 B 1030 972 18.36      
13 B 807 761 15.39      
14 B 727 686 0.48      
15 B 243 229 29.59      

Unscaled Zero Point Vibrational Energy (zpe) 10337.0 cm-1
Scaled (by 0.9431) Zero Point Vibrational Energy (zpe) 9748.8 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 CCD/6-311+G(3df,2p)
ABC
0.89318 0.10661 0.09970

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCD/6-311+G(3df,2p)

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.777
S2 0.000 1.536 -0.179
S3 0.000 -1.536 -0.179
H4 0.878 -0.052 1.417
H5 -0.878 0.052 1.417
H6 1.103 1.271 -0.886
H7 -1.103 -1.271 -0.886

Atom - Atom Distances (Å)
  C1 S2 S3 H4 H5 H6 H7
C11.80931.80931.08741.08742.36652.3665
S21.80933.07192.41672.34951.33723.0978
S31.80933.07192.34952.41673.09781.3372
H41.08742.41672.34951.75842.66613.2736
H51.08742.34952.41671.75843.27362.6661
H62.36651.33723.09782.66613.27363.3659
H72.36653.09781.33723.27362.66613.3659

picture of Methanedithiol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 S2 H6 96.391 C1 S3 H7 96.391
S2 C1 S3 116.189 S2 C1 H4 110.593
S2 C1 H5 105.686 S3 C1 H4 105.686
S3 C1 H5 110.593 H4 C1 H5 107.895
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability