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All results from a given calculation for CH3SH (Methanethiol)

using model chemistry: CISD/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at CISD/3-21G*
 hartrees
Energy at 0K-435.865617
Energy at 298.15K-435.869534
HF Energy-435.636874
Nuclear repulsion energy56.001037
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 CISD/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' 3184 2975 7.39      
2 A' 3109 2905 20.85      
3 A' 2772 2591 14.02      
4 A' 1593 1488 9.30      
5 A' 1474 1377 3.66      
6 A' 1172 1095 20.63      
7 A' 852 796 1.73      
8 A' 715 668 2.16      
9 A" 3187 2978 10.83      
10 A" 1583 1479 7.35      
11 A" 1045 977 6.66      
12 A" 256 239 19.23      

Unscaled Zero Point Vibrational Energy (zpe) 10470.0 cm-1
Scaled (by 0.9344) Zero Point Vibrational Energy (zpe) 9783.2 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 CISD/3-21G*
ABC
3.43406 0.42448 0.40720

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.048 1.162 0.000
S2 -0.048 -0.671 0.000
H3 1.282 -0.826 0.000
H4 -1.095 1.476 0.000
H5 0.437 1.555 0.894
H6 0.437 1.555 -0.894

Atom - Atom Distances (Å)
  C1 S2 H3 H4 H5 H6
C11.83312.39251.09221.09101.0910
S21.83311.33922.38782.44782.4478
H32.39251.33923.30862.68082.6808
H41.09222.38783.30861.77561.7756
H51.09102.44782.68081.77561.7886
H61.09102.44782.68081.77561.7886

picture of Methanethiol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 S2 H3 96.675 S2 C1 H4 106.670
S2 C1 H5 111.127 S2 C1 H6 111.127
H4 C1 H5 108.844 H4 C1 H6 108.844
H5 C1 H6 110.118
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability