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All results from a given calculation for HSCH2SH (Methanedithiol)

using model chemistry: QCISD/TZVP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at QCISD/TZVP
 hartrees
Energy at 0K-835.743078
Energy at 298.15K 
HF Energy-835.270227
Nuclear repulsion energy141.000498
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 QCISD/TZVP
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 3127 2987 12.78      
2 A 2736 2614 1.98      
3 A 1465 1400 0.29      
4 A 1224 1169 0.99      
5 A 922 881 4.38      
6 A 653 624 3.29      
7 A 300 287 13.11      
8 A 228 217 6.18      
9 B 3189 3046 2.43      
10 B 2736 2613 6.81      
11 B 1315 1256 28.39      
12 B 1031 985 23.98      
13 B 786 751 20.42      
14 B 726 694 0.65      
15 B 257 245 38.95      

Unscaled Zero Point Vibrational Energy (zpe) 10346.3 cm-1
Scaled (by 0.9553) Zero Point Vibrational Energy (zpe) 9883.8 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 QCISD/TZVP
ABC
0.88853 0.10403 0.09747

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/TZVP

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.780
S2 0.000 1.555 -0.180
S3 0.000 -1.555 -0.180
H4 0.879 -0.053 1.417
H5 -0.879 0.053 1.417
H6 1.118 1.291 -0.874
H7 -1.118 -1.291 -0.874

Atom - Atom Distances (Å)
  C1 S2 S3 H4 H5 H6 H7
C11.82731.82731.08741.08742.37722.3772
S21.82733.10982.43142.36221.34223.1354
S31.82733.10982.36222.43143.13541.3422
H41.08742.43142.36221.76152.66733.2820
H51.08742.36222.43141.76153.28202.6673
H62.37721.34223.13542.66733.28203.4161
H72.37723.13541.34223.28202.66733.4161

picture of Methanedithiol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 S2 H6 95.977 C1 S3 H7 95.977
S2 C1 S3 116.625 S2 C1 H4 110.478
S2 C1 H5 105.446 S3 C1 H4 105.446
S3 C1 H5 110.478 H4 C1 H5 108.179
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability