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All results from a given calculation for CH3SH (Methanethiol)

using model chemistry: MP4=FULL/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 MP4=FULL/3-21G
 hartrees
Energy at 0K-435.712590
Energy at 298.15K-435.716382
HF Energy-435.525054
Nuclear repulsion energy54.102811
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 MP4=FULL/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' 3172 3105        
2 A' 3076 3011        
3 A' 2392 2341        
4 A' 1557 1524        
5 A' 1408 1379        
6 A' 1095 1072        
7 A' 778 762        
8 A' 624 610        
9 A" 3173 3105        
10 A" 1553 1520        
11 A" 981 960        
12 A" 229 224        

Unscaled Zero Point Vibrational Energy (zpe) 10018.2 cm-1
Scaled (by 0.9788) Zero Point Vibrational Energy (zpe) 9805.8 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 MP4=FULL/3-21G
ABC
3.31572 0.38967 0.37414

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4=FULL/3-21G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.050 1.226 0.000
S2 -0.050 -0.700 0.000
H3 1.322 -0.852 0.000
H4 -1.106 1.511 0.000
H5 0.442 1.596 0.903
H6 0.442 1.596 -0.903

Atom - Atom Distances (Å)
  C1 S2 H3 H4 H5 H6
C11.92622.49041.09351.09301.0930
S21.92621.38052.45042.51642.5164
H32.49041.38053.38822.75462.7546
H41.09352.45043.38821.79351.7935
H51.09302.51642.75461.79351.8063
H61.09302.51642.75461.79351.8063

picture of Methanethiol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 S2 H3 96.321 S2 C1 H4 105.117
S2 C1 H5 109.815 S2 C1 H6 109.815
H4 C1 H5 110.226 H4 C1 H6 110.226
H5 C1 H6 111.452
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability