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All results from a given calculation for CH3F (Methyl fluoride)

using model chemistry: HF/CEP-121G

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-121G
 hartrees
Energy at 0K-31.050616
Energy at 298.15K-31.053659
HF Energy-31.050616
Nuclear repulsion energy22.632403
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-121G
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 3193 2913 32.55 140.31 0.05 0.09
2 A1 1597 1457 5.38 4.61 0.72 0.84
3 A1 1069 976 130.76 11.18 0.43 0.60
4 E 3319 3028 47.78 51.00 0.75 0.86
4 E 3319 3028 47.78 51.00 0.75 0.86
5 E 1625 1483 5.48 14.76 0.75 0.86
5 E 1625 1483 5.48 14.76 0.75 0.86
6 E 1258 1148 1.92 10.18 0.75 0.86
6 E 1258 1148 1.92 10.18 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 9130.7 cm-1
Scaled (by 0.9125) Zero Point Vibrational Energy (zpe) 8331.8 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 HF/CEP-121G
ABC
5.26036 0.82225 0.82225

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/CEP-121G

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -0.657
F2 0.000 0.000 0.767
H3 0.000 1.030 -0.987
H4 0.892 -0.515 -0.987
H5 -0.892 -0.515 -0.987

Atom - Atom Distances (Å)
  C1 F2 H3 H4 H5
C11.42401.08121.08121.0812
F21.42402.03402.03402.0340
H31.08122.03401.78321.7832
H41.08122.03401.78321.7832
H51.08122.03401.78321.7832

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 107.781 F2 C1 H4 107.781
F2 C1 H5 107.781 H3 C1 H4 111.107
H3 C1 H5 111.107 H4 C1 H5 111.107
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/CEP-121G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.083      
2 F -0.377      
3 H 0.153      
4 H 0.153      
5 H 0.153      


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 -2.764 2.764
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -11.658 0.000 0.000
y 0.000 -11.658 0.000
z 0.000 0.000 -12.778
Traceless
 xyz
x 0.560 0.000 0.000
y 0.000 0.560 0.000
z 0.000 0.000 -1.121
Polar
3z2-r2-2.242
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 1.752 0.000 0.000
y 0.000 1.752 0.000
z 0.000 0.000 1.865


<r2> (average value of r2) Å2
<r2> 19.462
(<r2>)1/2 4.412