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: HF/CEP-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at HF/CEP-31G*
 hartrees
Energy at 0K-31.089601
Energy at 298.15K-31.092657
HF Energy-31.089601
Nuclear repulsion energy23.035747
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 HF/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 A1 3249 2917 50.61 147.16 0.05 0.09
2 A1 1622 1456 12.56 4.89 0.61 0.76
3 A1 1167 1048 159.29 7.58 0.44 0.61
4 E 3341 3000 87.90 57.32 0.75 0.86
4 E 3341 3000 87.90 57.32 0.75 0.86
5 E 1626 1460 1.35 14.50 0.75 0.86
5 E 1626 1460 1.35 14.50 0.75 0.86
6 E 1299 1166 4.34 6.74 0.75 0.86
6 E 1299 1166 4.34 6.74 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 9284.0 cm-1
Scaled (by 0.898) Zero Point Vibrational Energy (zpe) 8337.1 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 HF/CEP-31G*
ABC
5.23889 0.86859 0.86859

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

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -0.629
F2 0.000 0.000 0.745
H3 0.000 1.032 -0.977
H4 0.893 -0.516 -0.977
H5 -0.893 -0.516 -0.977

Atom - Atom Distances (Å)
  C1 F2 H3 H4 H5
C11.37461.08871.08871.0887
F21.37462.00762.00762.0076
H31.08872.00761.78681.7868
H41.08872.00761.78681.7868
H51.08872.00761.78681.7868

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 108.626 F2 C1 H4 108.626
F2 C1 H5 108.626 H3 C1 H4 110.303
H3 C1 H5 110.303 H4 C1 H5 110.303
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/CEP-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.158      
2 F -0.296      
3 H 0.151      
4 H 0.151      
5 H 0.151      


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 -2.150 2.150
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -11.605 0.000 0.000
y 0.000 -11.605 0.000
z 0.000 0.000 -12.330
Traceless
 xyz
x 0.362 0.000 0.000
y 0.000 0.362 0.000
z 0.000 0.000 -0.725
Polar
3z2-r2-1.450
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 1.657 0.000 0.000
y 0.000 1.657 0.000
z 0.000 0.000 1.687


<r2> (average value of r2) Å2
<r2> 18.928
(<r2>)1/2 4.351