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 CH3F (Methyl fluoride)

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 C3V 1A1
Energy calculated at mPW1PW91/3-21G
 hartrees
Energy at 0K-138.940123
Energy at 298.15K-138.943150
HF Energy-138.940123
Nuclear repulsion energy36.769974
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 A1 3058 2919 22.02 107.01 0.03 0.07
2 A1 1564 1493 3.61 7.93 0.73 0.84
3 A1 1084 1034 49.52 4.42 0.53 0.69
4 E 3124 2982 49.88 55.04 0.75 0.86
4 E 3124 2982 49.88 55.04 0.75 0.86
5 E 1573 1501 3.30 23.54 0.75 0.86
5 E 1573 1501 3.30 23.54 0.75 0.86
6 E 1194 1139 0.02 8.29 0.75 0.86
6 E 1194 1139 0.02 8.29 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 8742.3 cm-1
Scaled (by 0.9546) Zero Point Vibrational Energy (zpe) 8345.4 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 mPW1PW91/3-21G
ABC
5.28960 0.82231 0.82231

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

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -0.642
F2 0.000 0.000 0.769
H3 0.000 1.027 -1.022
H4 0.889 -0.513 -1.022
H5 -0.889 -0.513 -1.022

Atom - Atom Distances (Å)
  C1 F2 H3 H4 H5
C11.41101.09461.09461.0946
F21.41102.06392.06392.0639
H31.09462.06391.77831.7783
H41.09462.06391.77831.7783
H51.09462.06391.77831.7783

picture of Methyl fluoride state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
F2 C1 H3 110.285 F2 C1 H4 110.285
F2 C1 H5 110.285 H3 C1 H4 108.646
H3 C1 H5 108.646 H4 C1 H5 108.646
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 -0.304      
2 F -0.314      
3 H 0.206      
4 H 0.206      
5 H 0.206      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 -1.949 1.949
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -11.609 0.000 0.000
y 0.000 -11.609 0.000
z 0.000 0.000 -11.969
Traceless
 xyz
x 0.180 0.000 0.000
y 0.000 0.180 0.000
z 0.000 0.000 -0.360
Polar
3z2-r2-0.720
x2-y20.000
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.648 0.000 0.000
y 0.000 1.648 0.000
z 0.000 0.000 1.749


<r2> (average value of r2) Å2
<r2> 21.413
(<r2>)1/2 4.627