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: MP3=FULL/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at MP3=FULL/6-31G(2df,p)
 hartrees
Energy at 0K-835.820503
Energy at 298.15K 
HF Energy-835.231003
Nuclear repulsion energy142.370241
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 MP3=FULL/6-31G(2df,p)
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 3175 3175 3.48      
2 A 2782 2782 0.01      
3 A 1502 1502 1.16      
4 A 1242 1242 0.45      
5 A 933 933 4.55      
6 A 667 667 3.43      
7 A 306 306 12.78      
8 A 233 233 4.55      
9 B 3236 3236 0.59      
10 B 2781 2781 0.02      
11 B 1299 1299 22.41      
12 B 1035 1035 19.91      
13 B 815 815 17.66      
14 B 733 733 0.66      
15 B 250 250 37.14      

Unscaled Zero Point Vibrational Energy (zpe) 10495.0 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 10495.0 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 MP3=FULL/6-31G(2df,p)
ABC
0.89264 0.10679 0.09976

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3=FULL/6-31G(2df,p)

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.779
S2 0.000 1.535 -0.178
S3 0.000 -1.535 -0.178
H4 0.875 -0.052 1.419
H5 -0.875 0.052 1.419
H6 1.087 1.256 -0.902
H7 -1.087 -1.256 -0.902

Atom - Atom Distances (Å)
  C1 S2 S3 H4 H5 H6 H7
C11.80951.80951.08541.08542.36372.3637
S21.80953.07082.41622.34911.33593.0819
S31.80953.07082.34912.41623.08191.3359
H41.08542.41622.34911.75322.67313.2695
H51.08542.34912.41621.75323.26952.6731
H62.36371.33593.08192.67313.26953.3224
H72.36373.08191.33593.26952.67313.3224

picture of Methanedithiol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 S2 H6 96.271 C1 S3 H7 96.271
S2 C1 S3 116.107 S2 C1 H4 110.653
S2 C1 H5 105.744 S3 C1 H4 105.744
S3 C1 H5 110.653 H4 C1 H5 107.729
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability