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All results from a given calculation for HSCH2SH (Methanedithiol)

using model chemistry: MP4=FULL/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at MP4=FULL/3-21G
 hartrees
Energy at 0K-831.332123
Energy at 298.15K 
HF Energy-831.073344
Nuclear repulsion energy135.876574
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 MP4=FULL/3-21G
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 3121 3055        
2 A 2398 2348        
3 A 1510 1478        
4 A 1210 1185        
5 A 871 852        
6 A 567 555        
7 A 276 271        
8 A 234 229        
9 B 3193 3126        
10 B 2398 2347        
11 B 1275 1248        
12 B 989 968        
13 B 710 695        
14 B 678 664        
15 B 236 231        

Unscaled Zero Point Vibrational Energy (zpe) 9833.6 cm-1
Scaled (by 0.9788) Zero Point Vibrational Energy (zpe) 9625.2 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 MP4=FULL/3-21G
ABC
0.80536 0.09693 0.09048

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4=FULL/3-21G

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.837
S2 0.000 1.611 -0.193
S3 0.000 -1.611 -0.193
H4 0.895 -0.051 1.460
H5 -0.895 0.051 1.460
H6 1.160 1.338 -0.888
H7 -1.160 -1.338 -0.888

Atom - Atom Distances (Å)
  C1 S2 S3 H4 H5 H6 H7
C11.91231.91231.09141.09142.47242.4724
S21.91233.22222.50922.44271.37983.2446
S31.91233.22222.44272.50923.24461.3798
H41.09142.50922.44271.79222.74123.3754
H51.09142.44272.50921.79223.37542.7412
H62.47241.37983.24462.74123.37543.5423
H72.47243.24461.37983.37542.74123.5423

picture of Methanedithiol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 S2 H6 96.008 C1 S3 H7 96.008
S2 C1 S3 114.814 S2 C1 H4 110.301
S2 C1 H5 105.547 S3 C1 H4 105.547
S3 C1 H5 110.301 H4 C1 H5 110.381
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability