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: CCSD(T)/6-31+G**

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(T)/6-31+G**
 hartrees
Energy at 0K-835.679398
Energy at 298.15K 
HF Energy-835.217159
Nuclear repulsion energy141.429659
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(T)/6-31+G**
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 3131 3005        
2 A 2758 2647        
3 A 1476 1417        
4 A 1234 1185        
5 A 940 902        
6 A 657 631        
7 A 322 309        
8 A 249 239        
9 B 3193 3064        
10 B 2757 2646        
11 B 1322 1269        
12 B 1047 1005        
13 B 786 754        
14 B 748 718        
15 B 276 265        

Unscaled Zero Point Vibrational Energy (zpe) 10448.0 cm-1
Scaled (by 0.9596) Zero Point Vibrational Energy (zpe) 10025.9 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(T)/6-31+G**
ABC
0.88342 0.10514 0.09828

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD(T)/6-31+G**

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.784
S2 0.000 1.547 -0.181
S3 0.000 -1.547 -0.181
H4 0.878 -0.058 1.427
H5 -0.878 0.058 1.427
H6 1.101 1.267 -0.886
H7 -1.101 -1.267 -0.886

Atom - Atom Distances (Å)
  C1 S2 S3 H4 H5 H6 H7
C11.82341.82341.09001.09002.36802.3680
S21.82343.09472.43562.36081.33703.1036
S31.82343.09472.36082.43563.10361.3370
H41.09002.43562.36081.76042.67513.2755
H51.09002.36082.43561.76043.27552.6751
H62.36801.33703.10362.67513.27553.3573
H72.36803.10361.33703.27552.67513.3573

picture of Methanedithiol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 S2 H6 95.827 C1 S3 H7 95.827
S2 C1 S3 116.122 S2 C1 H4 110.925
S2 C1 H5 105.479 S3 C1 H4 105.479
S3 C1 H5 110.925 H4 C1 H5 107.715
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability