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All results from a given calculation for CH3SH (Methanethiol)

using model chemistry: B3PW91/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B3PW91/3-21G
 hartrees
Energy at 0K-436.452537
Energy at 298.15K-436.456368
HF Energy-436.452537
Nuclear repulsion energy54.721507
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 B3PW91/3-21G
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' 3203 3079 2.91      
2 A' 3099 2979 15.51      
3 A' 2486 2390 34.10      
4 A' 1537 1477 13.39      
5 A' 1397 1343 3.20      
6 A' 1101 1059 24.87      
7 A' 794 763 2.69      
8 A' 657 632 5.11      
9 A" 3201 3077 6.76      
10 A" 1537 1477 12.47      
11 A" 987 948 9.45      
12 A" 240 231 26.78      

Unscaled Zero Point Vibrational Energy (zpe) 10119.8 cm-1
Scaled (by 0.9612) Zero Point Vibrational Energy (zpe) 9727.2 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 B3PW91/3-21G
ABC
3.34156 0.40133 0.38509

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/3-21G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.050 1.205 0.000
S2 -0.050 -0.690 0.000
H3 1.316 -0.841 0.000
H4 -1.102 1.494 0.000
H5 0.439 1.578 0.901
H6 0.439 1.578 -0.901

Atom - Atom Distances (Å)
  C1 S2 H3 H4 H5 H6
C11.89522.46031.09081.09041.0904
S21.89521.37412.42392.48852.4885
H32.46031.37413.36112.72642.7264
H41.09082.42393.36111.78631.7863
H51.09042.48852.72641.78631.8023
H61.09042.48852.72641.78631.8023

picture of Methanethiol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 S2 H3 96.317 S2 C1 H4 105.338
S2 C1 H5 109.973 S2 C1 H6 109.973
H4 C1 H5 109.959 H4 C1 H6 109.959
H5 C1 H6 111.463
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.863      
2 S 0.003      
3 H 0.090      
4 H 0.263      
5 H 0.253      
6 H 0.253      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.143 1.678 0.000 2.030
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.377 -1.630 0.000
y -1.630 -20.593 0.000
z 0.000 0.000 -22.603
Traceless
 xyz
x 2.221 -1.630 0.000
y -1.630 0.397 0.000
z 0.000 0.000 -2.618
Polar
3z2-r2-5.236
x2-y21.216
xy-1.630
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.800 -0.295 0.000
y -0.295 4.757 0.000
z 0.000 0.000 2.404


<r2> (average value of r2) Å2
<r2> 42.285
(<r2>)1/2 6.503