return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
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All results from a given calculation for CH3SH (Methanethiol)

using model chemistry: B3LYP/CEP-121G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B3LYP/CEP-121G*
 hartrees
Energy at 0K-18.202829
Energy at 298.15K-18.206665
HF Energy-18.202829
Nuclear repulsion energy21.214824
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 B3LYP/CEP-121G*
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' 3132 3036 16.79 75.04 0.75 0.86
2 A' 3039 2946 37.44 133.43 0.00 0.01
3 A' 2628 2547 17.86 149.57 0.35 0.52
4 A' 1497 1452 8.97 14.56 0.75 0.86
5 A' 1373 1331 11.62 2.66 0.55 0.71
6 A' 1097 1063 18.11 13.96 0.72 0.84
7 A' 790 766 0.85 8.26 0.44 0.61
8 A' 696 674 2.75 18.20 0.26 0.41
9 A" 3129 3033 19.16 79.23 0.75 0.86
10 A" 1488 1443 6.77 14.31 0.75 0.86
11 A" 969 940 5.68 6.78 0.75 0.86
12 A" 239 232 16.25 3.23 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 10038.5 cm-1
Scaled (by 0.9694) Zero Point Vibrational Energy (zpe) 9731.4 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 B3LYP/CEP-121G*
ABC
3.38634 0.41714 0.40002

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/CEP-121G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.049 1.173 0.000
S2 -0.049 -0.677 0.000
H3 1.302 -0.833 0.000
H4 -1.100 1.478 0.000
H5 0.433 1.572 0.898
H6 0.433 1.572 -0.898

Atom - Atom Distances (Å)
  C1 S2 H3 H4 H5 H6
C11.85022.41891.09431.09381.0938
S21.85021.35982.39722.46852.4685
H32.41891.35983.33302.71002.7100
H41.09432.39723.33301.77891.7789
H51.09382.46852.71001.77891.7952
H61.09382.46852.71001.77891.7952

picture of Methanethiol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 S2 H3 96.602 S2 C1 H4 106.139
S2 C1 H5 111.350 S2 C1 H6 111.350
H4 C1 H5 108.779 H4 C1 H6 108.779
H5 C1 H6 110.295
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/CEP-121G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.568      
2 S -0.122      
3 H 0.106      
4 H 0.195      
5 H 0.194      
6 H 0.194      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.846 1.456 0.000 1.684
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -18.419 -1.351 0.000
y -1.351 -19.650 0.000
z 0.000 0.000 -22.017
Traceless
 xyz
x 2.415 -1.351 0.000
y -1.351 0.568 0.000
z 0.000 0.000 -2.982
Polar
3z2-r2-5.965
x2-y21.231
xy-1.351
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.232 -0.240 0.000
y -0.240 5.452 0.000
z 0.000 0.000 3.586


<r2> (average value of r2) Å2
<r2> 33.499
(<r2>)1/2 5.788