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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-435.693337
Energy at 298.15K-435.697150
HF Energy-435.525621
Nuclear repulsion energy54.387757
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' 3215 3026 4.57      
2 A' 3122 2939 16.35      
3 A' 2449 2305 37.38      
4 A' 1574 1482 8.91      
5 A' 1430 1346 7.65      
6 A' 1116 1050 21.51      
7 A' 795 749 3.35      
8 A' 645 607 4.39      
9 A" 3214 3026 8.57      
10 A" 1569 1477 8.57      
11 A" 1001 942 5.52      
12 A" 226 212 22.84      

Unscaled Zero Point Vibrational Energy (zpe) 10178.0 cm-1
Scaled (by 0.9413) Zero Point Vibrational Energy (zpe) 9580.6 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
3.34461 0.39420 0.37846

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 -0.050 1.218 0.000
S2 -0.050 -0.696 0.000
H3 1.315 -0.854 0.000
H4 -1.100 1.508 0.000
H5 0.442 1.586 0.900
H6 0.442 1.586 -0.900

Atom - Atom Distances (Å)
  C1 S2 H3 H4 H5 H6
C11.91432.48141.08971.08921.0892
S21.91431.37402.44142.50212.5021
H32.48141.37403.37822.74372.7437
H41.08972.44143.37821.78691.7869
H51.08922.50212.74371.78691.7992
H61.08922.50212.74371.78691.7992

picture of Methanethiol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 S2 H3 96.600 S2 C1 H4 105.406
S2 C1 H5 109.758 S2 C1 H6 109.758
H4 C1 H5 110.190 H4 C1 H6 110.190
H5 C1 H6 111.368
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability