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All results from a given calculation for CH3SH (Methanethiol)

using model chemistry: MP2/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP2/3-21G
 hartrees
Energy at 0K-435.678145
Energy at 298.15K-435.681971
HF Energy-435.525692
Nuclear repulsion energy54.438537
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 MP2/3-21G
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' 3234 3087 3.74 53.57 0.75 0.86
2 A' 3134 2992 14.90 86.20 0.01 0.03
3 A' 2479 2366 31.59 133.75 0.39 0.56
4 A' 1583 1511 8.87 19.38 0.75 0.86
5 A' 1436 1371 7.20 0.92 0.67 0.80
6 A' 1115 1064 22.51 24.36 0.73 0.84
7 A' 794 758 3.27 12.99 0.72 0.84
8 A' 648 619 3.62 22.81 0.31 0.47
9 A" 3234 3086 7.45 54.85 0.75 0.86
10 A" 1577 1505 8.49 22.77 0.75 0.86
11 A" 1003 957 6.04 11.20 0.75 0.86
12 A" 233 222 23.31 15.55 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 10235.0 cm-1
Scaled (by 0.9545) Zero Point Vibrational Energy (zpe) 9769.3 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 MP2/3-21G
ABC
3.35141 0.39492 0.37917

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/3-21G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.050 1.217 0.000
S2 -0.050 -0.696 0.000
H3 1.313 -0.850 0.000
H4 -1.100 1.505 0.000
H5 0.440 1.587 0.899
H6 0.440 1.587 -0.899

Atom - Atom Distances (Å)
  C1 S2 H3 H4 H5 H6
C11.91242.47601.08911.08861.0886
S21.91241.37182.43842.50162.5016
H32.47601.37183.37212.74032.7403
H41.08912.43843.37211.78531.7853
H51.08862.50162.74031.78531.7977
H61.08862.50162.74031.78531.7977

picture of Methanethiol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 S2 H3 96.469 S2 C1 H4 105.345
S2 C1 H5 109.875 S2 C1 H6 109.875
H4 C1 H5 110.134 H4 C1 H6 110.134
H5 C1 H6 111.312
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability