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: mPW1PW91/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at mPW1PW91/3-21G
 hartrees
Energy at 0K-436.506831
Energy at 298.15K-436.510661
HF Energy-436.506831
Nuclear repulsion energy54.851048
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 mPW1PW91/3-21G
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' 3221 3075 2.40 57.20 0.75 0.86
2 A' 3116 2974 15.17 99.44 0.01 0.01
3 A' 2496 2383 32.16 139.06 0.38 0.55
4 A' 1545 1475 13.75 19.28 0.75 0.86
5 A' 1407 1343 2.94 1.22 0.60 0.75
6 A' 1110 1060 25.49 23.92 0.73 0.84
7 A' 803 767 2.87 13.03 0.70 0.82
8 A' 667 636 5.14 21.15 0.32 0.48
9 A" 3219 3073 5.93 59.72 0.75 0.86
10 A" 1545 1475 12.97 22.69 0.75 0.86
11 A" 994 949 9.45 11.14 0.75 0.86
12 A" 231 221 27.47 14.62 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 10177.0 cm-1
Scaled (by 0.9546) Zero Point Vibrational Energy (zpe) 9715.0 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 mPW1PW91/3-21G
ABC
3.35457 0.40342 0.38709

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/3-21G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.050 1.202 0.000
S2 -0.050 -0.688 0.000
H3 1.313 -0.841 0.000
H4 -1.100 1.491 0.000
H5 0.438 1.574 0.900
H6 0.438 1.574 -0.900

Atom - Atom Distances (Å)
  C1 S2 H3 H4 H5 H6
C11.88982.45521.08921.08891.0889
S21.88981.37102.41902.48312.4831
H32.45521.37103.35532.72172.7217
H41.08922.41903.35531.78331.7833
H51.08892.48312.72171.78331.7993
H61.08892.48312.72171.78331.7993

picture of Methanethiol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 S2 H3 96.392 S2 C1 H4 105.408
S2 C1 H5 110.013 S2 C1 H6 110.013
H4 C1 H5 109.912 H4 C1 H6 109.912
H5 C1 H6 111.413
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.878      
2 S 0.005      
3 H 0.092      
4 H 0.267      
5 H 0.257      
6 H 0.257      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.157 1.681 0.000 2.041
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.383 -1.647 0.000
y -1.647 -20.616 0.000
z 0.000 0.000 -22.610
Traceless
 xyz
x 2.230 -1.647 0.000
y -1.647 0.381 0.000
z 0.000 0.000 -2.611
Polar
3z2-r2-5.222
x2-y21.233
xy-1.647
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.780 -0.298 0.000
y -0.298 4.733 0.000
z 0.000 0.000 2.396


<r2> (average value of r2) Å2
<r2> 42.152
(<r2>)1/2 6.492