return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for CH3SH (Methanethiol)

using model chemistry: B3LYP/CEP-31G*

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-31G*
 hartrees
Energy at 0K-18.196990
Energy at 298.15K-18.200824
HF Energy-18.196990
Nuclear repulsion energy21.153131
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-31G*
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' 3159 3051 20.20 69.40 0.75 0.86
2 A' 3066 2960 37.23 145.83 0.01 0.02
3 A' 2656 2565 27.41 148.02 0.38 0.55
4 A' 1484 1433 9.23 16.10 0.75 0.85
5 A' 1361 1315 8.89 1.88 0.72 0.84
6 A' 1096 1058 22.17 18.19 0.73 0.85
7 A' 788 761 0.79 7.19 0.49 0.66
8 A' 696 673 3.25 20.56 0.29 0.45
9 A" 3154 3045 28.08 72.41 0.75 0.86
10 A" 1475 1425 7.26 17.21 0.75 0.86
11 A" 964 931 9.51 10.12 0.75 0.86
12 A" 246 238 20.21 9.47 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 10072.6 cm-1
Scaled (by 0.9657) Zero Point Vibrational Energy (zpe) 9727.1 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-31G*
ABC
3.35252 0.41620 0.39912

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/CEP-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.049 1.175 0.000
S2 -0.049 -0.677 0.000
H3 1.304 -0.835 0.000
H4 -1.107 1.479 0.000
H5 0.437 1.573 0.904
H6 0.437 1.573 -0.904

Atom - Atom Distances (Å)
  C1 S2 H3 H4 H5 H6
C11.85182.42221.10101.10081.1008
S21.85181.36182.40162.47332.4733
H32.42221.36183.34132.71422.7142
H41.10102.40163.34131.79141.7914
H51.10082.47332.71421.79141.8080
H61.10082.47332.71421.79141.8080

picture of Methanethiol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 S2 H3 96.638 S2 C1 H4 106.033
S2 C1 H5 111.227 S2 C1 H6 111.227
H4 C1 H5 108.894 H4 C1 H6 108.894
H5 C1 H6 110.421
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/CEP-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.488      
2 S -0.187      
3 H 0.114      
4 H 0.184      
5 H 0.189      
6 H 0.189      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.959 1.526 0.000 1.802
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -18.084 -1.443 0.000
y -1.443 -19.344 0.000
z 0.000 0.000 -21.824
Traceless
 xyz
x 2.500 -1.443 0.000
y -1.443 0.610 0.000
z 0.000 0.000 -3.110
Polar
3z2-r2-6.221
x2-y21.260
xy-1.443
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.656 -0.204 0.000
y -0.204 5.213 0.000
z 0.000 0.000 2.495


<r2> (average value of r2) Å2
<r2> 33.404
(<r2>)1/2 5.780