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: CID/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 CID/3-21G*
 hartrees
Energy at 0K-831.631842
Energy at 298.15K 
HF Energy-831.297513
Nuclear repulsion energy141.425263
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 CID/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 3160 2941 7.26      
2 A 2810 2615 2.61      
3 A 1573 1464 4.23      
4 A 1299 1209 1.09      
5 A 975 907 5.39      
6 A 657 611 3.48      
7 A 310 288 19.96      
8 A 256 238 7.56      
9 B 3211 2988 0.53      
10 B 2808 2613 5.91      
11 B 1364 1269 12.16      
12 B 1088 1013 27.38      
13 B 781 727 7.59      
14 B 771 717 12.39      
15 B 264 245 45.10      

Unscaled Zero Point Vibrational Energy (zpe) 10663.2 cm-1
Scaled (by 0.9305) Zero Point Vibrational Energy (zpe) 9922.1 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 CID/3-21G*
ABC
0.87249 0.10554 0.09852

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

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.792
S2 0.000 1.544 -0.183
S3 0.000 -1.544 -0.183
H4 0.880 -0.048 1.432
H5 -0.880 0.048 1.432
H6 1.105 1.276 -0.885
H7 -1.105 -1.276 -0.885

Atom - Atom Distances (Å)
  C1 S2 S3 H4 H5 H6 H7
C11.82571.82571.08911.08912.37912.3791
S21.82573.08782.43182.37061.33613.1092
S31.82573.08782.37062.43183.10921.3361
H41.08912.43182.37061.76212.67793.2886
H51.08912.37062.43181.76213.28862.6779
H62.37911.33613.10922.67793.28863.3760
H72.37913.10921.33613.28862.67793.3760

picture of Methanedithiol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 S2 H6 96.380 C1 S3 H7 96.380
S2 C1 S3 115.488 S2 C1 H4 110.532
S2 C1 H5 106.065 S3 C1 H4 106.065
S3 C1 H5 110.532 H4 C1 H5 107.994
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability