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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-31.047990
Energy at 298.15K-31.051028
HF Energy-31.047990
Nuclear repulsion energy22.604538
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 3262 2941 42.01      
2 A1 1602 1444 3.68      
3 A1 1067 962 128.20      
4 E 3384 3050 78.19      
4 E 3384 3050 78.19      
5 E 1630 1469 5.37      
5 E 1630 1469 5.37      
6 E 1259 1134 2.31      
6 E 1259 1134 2.31      

Unscaled Zero Point Vibrational Energy (zpe) 9237.2 cm-1
Scaled (by 0.9014) Zero Point Vibrational Energy (zpe) 8326.4 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 HF/CEP-31G
ABC
5.22646 0.82132 0.82132

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 -0.658
F2 0.000 0.000 0.767
H3 0.000 1.033 -0.987
H4 0.894 -0.516 -0.987
H5 -0.894 -0.516 -0.987

Atom - Atom Distances (Å)
  C1 F2 H3 H4 H5
C11.42481.08401.08401.0840
F21.42482.03532.03532.0353
H31.08402.03531.78901.7890
H41.08402.03531.78901.7890
H51.08402.03531.78901.7890

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 107.667 F2 C1 H4 107.667
F2 C1 H5 107.667 H3 C1 H4 111.213
H3 C1 H5 111.213 H4 C1 H5 111.213
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/CEP-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.104      
2 F -0.365      
3 H 0.157      
4 H 0.157      
5 H 0.157      


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 -2.836 2.836
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -11.567 0.000 0.000
y 0.000 -11.567 0.000
z 0.000 0.000 -12.785
Traceless
 xyz
x 0.609 0.000 0.000
y 0.000 0.609 0.000
z 0.000 0.000 -1.218
Polar
3z2-r2-2.436
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 1.490 0.000 0.000
y 0.000 1.490 0.000
z 0.000 0.000 1.719


<r2> (average value of r2) Å2
<r2> 19.449
(<r2>)1/2 4.410