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: mPW1PW91/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at mPW1PW91/6-31G**
 hartrees
Energy at 0K-438.695914
Energy at 298.15K-438.699795
HF Energy-438.695914
Nuclear repulsion energy56.270244
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 mPW1PW91/6-31G**
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' 3197 3042 5.54 64.81 0.75 0.86
2 A' 3094 2944 23.29 117.21 0.00 0.01
3 A' 2735 2602 13.18 135.19 0.37 0.54
4 A' 1503 1430 9.71 17.11 0.75 0.86
5 A' 1386 1319 6.17 4.59 0.47 0.64
6 A' 1116 1062 22.18 16.59 0.71 0.83
7 A' 813 774 0.93 9.85 0.53 0.69
8 A' 731 695 2.41 11.19 0.28 0.44
9 A" 3193 3039 8.13 71.18 0.75 0.86
10 A" 1493 1420 6.62 19.08 0.75 0.86
11 A" 991 943 7.20 7.16 0.75 0.86
12 A" 251 238 20.08 4.51 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 10250.9 cm-1
Scaled (by 0.9515) Zero Point Vibrational Energy (zpe) 9753.8 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 mPW1PW91/6-31G**
ABC
3.44052 0.43024 0.41257

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/6-31G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.048 1.153 0.000
S2 -0.048 -0.666 0.000
H3 1.285 -0.831 0.000
H4 -1.094 1.458 0.000
H5 0.430 1.554 0.894
H6 0.430 1.554 -0.894

Atom - Atom Distances (Å)
  C1 S2 H3 H4 H5 H6
C11.81852.38981.09021.08991.0899
S21.81851.34322.36792.43982.4398
H32.38981.34323.30182.68622.6862
H41.09022.36793.30181.76951.7695
H51.08992.43982.68621.76951.7880
H61.08992.43982.68621.76951.7880

picture of Methanethiol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 S2 H3 97.050 S2 C1 H4 106.274
S2 C1 H5 111.579 S2 C1 H6 111.579
H4 C1 H5 108.513 H4 C1 H6 108.513
H5 C1 H6 110.216
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.552      
2 S -0.049      
3 H 0.077      
4 H 0.178      
5 H 0.173      
6 H 0.173      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.925 1.501 0.000 1.763
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -18.939 -1.453 0.000
y -1.453 -20.052 0.000
z 0.000 0.000 -22.348
Traceless
 xyz
x 2.261 -1.453 0.000
y -1.453 0.592 0.000
z 0.000 0.000 -2.853
Polar
3z2-r2-5.706
x2-y21.113
xy-1.453
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.853 -0.239 0.000
y -0.239 4.779 0.000
z 0.000 0.000 3.134


<r2> (average value of r2) Å2
<r2> 40.347
(<r2>)1/2 6.352