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All results from a given calculation for CH3SH (Methanethiol)

using model chemistry: HF/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 HF/3-21G
 hartrees
Energy at 0K-435.526292
Energy at 298.15K-435.530166
HF Energy-435.526292
Nuclear repulsion energy55.003563
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 HF/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' 3349 3033 2.92 66.35 0.75 0.86
2 A' 3252 2945 23.06 103.82 0.01 0.02
3 A' 2626 2378 29.09 175.30 0.38 0.55
4 A' 1649 1493 10.98 19.82 0.75 0.85
5 A' 1504 1362 10.66 0.36 0.13 0.23
6 A' 1187 1075 24.71 25.08 0.71 0.83
7 A' 850 769 3.65 12.25 0.75 0.86
8 A' 683 618 10.24 42.49 0.32 0.48
9 A" 3350 3034 6.74 66.65 0.75 0.86
10 A" 1646 1491 11.10 22.94 0.75 0.86
11 A" 1062 962 5.88 9.92 0.75 0.86
12 A" 227 205 27.02 15.96 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 10692.2 cm-1
Scaled (by 0.9056) Zero Point Vibrational Energy (zpe) 9682.8 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 HF/3-21G
ABC
3.43912 0.40243 0.38664

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.049 1.206 0.000
S2 -0.049 -0.687 0.000
H3 1.291 -0.871 0.000
H4 -1.087 1.495 0.000
H5 0.438 1.569 0.890
H6 0.438 1.569 -0.890

Atom - Atom Distances (Å)
  C1 S2 H3 H4 H5 H6
C11.89382.47201.07761.07711.0771
S21.89381.35232.41692.47362.4736
H32.47201.35233.35462.73332.7333
H41.07762.41693.35461.76731.7673
H51.07712.47362.73331.76731.7795
H61.07712.47362.73331.76731.7795

picture of Methanethiol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 S2 H3 97.809 S2 C1 H4 105.544
S2 C1 H5 109.655 S2 C1 H6 109.655
H4 C1 H5 110.214 H4 C1 H6 110.214
H5 C1 H6 111.393
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.834      
2 S 0.017      
3 H 0.069      
4 H 0.256      
5 H 0.246      
6 H 0.246      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.154 1.775 0.000 2.117
CHELPG 1.129 1.744 0.000 2.077
AIM        
ESP 1.143 1.813 0.000 2.144


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.914 -1.698 0.000
y -1.698 -21.083 0.000
z 0.000 0.000 -22.944
Traceless
 xyz
x 2.100 -1.698 0.000
y -1.698 0.346 0.000
z 0.000 0.000 -2.445
Polar
3z2-r2-4.891
x2-y21.169
xy-1.698
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.751 -0.387 0.000
y -0.387 4.947 0.000
z 0.000 0.000 2.345


<r2> (average value of r2) Å2
<r2> 42.387
(<r2>)1/2 6.511