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All results from a given calculation for HSCH2SH (Methanedithiol)

using model chemistry: CCSD/cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at CCSD/cc-pVTZ
 hartrees
Energy at 0K-835.877749
Energy at 298.15K 
HF Energy-835.299392
Nuclear repulsion energy141.835558
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 CCSD/cc-pVTZ
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 3110 2927 8.05      
2 A 2729 2568 0.30      
3 A 1476 1389 0.74      
4 A 1220 1148 0.46      
5 A 919 865 3.70      
6 A 654 616 2.89      
7 A 296 279 9.45      
8 A 221 208 4.51      
9 B 3166 2980 1.30      
10 B 2728 2568 0.88      
11 B 1280 1205 22.45      
12 B 1020 960 16.71      
13 B 793 746 17.21      
14 B 723 681 0.42      
15 B 242 228 33.43      

Unscaled Zero Point Vibrational Energy (zpe) 10288.2 cm-1
Scaled (by 0.9412) Zero Point Vibrational Energy (zpe) 9683.2 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 CCSD/cc-pVTZ
ABC
0.88609 0.10593 0.09897

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD/cc-pVTZ

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.783
S2 0.000 1.542 -0.179
S3 0.000 -1.542 -0.179
H4 0.878 -0.052 1.421
H5 -0.878 0.052 1.421
H6 1.095 1.262 -0.898
H7 -1.095 -1.262 -0.898

Atom - Atom Distances (Å)
  C1 S2 S3 H4 H5 H6 H7
C11.81741.81741.08661.08662.37072.3707
S21.81743.08312.42332.35591.33943.0948
S31.81743.08312.35592.42333.09481.3394
H41.08662.42332.35591.75952.67473.2768
H51.08662.35592.42331.75953.27682.6747
H62.37071.33943.09482.67473.27683.3422
H72.37073.09481.33943.27682.67473.3422

picture of Methanedithiol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 S2 H6 96.172 C1 S3 H7 96.172
S2 C1 S3 116.038 S2 C1 H4 110.587
S2 C1 H5 105.669 S3 C1 H4 105.669
S3 C1 H5 110.587 H4 C1 H5 108.123
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability