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

using model chemistry: HF/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 HF/3-21G*
 hartrees
Energy at 0K-138.281893
Energy at 298.15K-138.284948
HF Energy-138.281893
Nuclear repulsion energy37.097525
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/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 3229 2914 17.21 110.87 0.05 0.09
2 A1 1663 1501 7.04 5.62 0.75 0.86
3 A1 1142 1031 66.94 7.32 0.46 0.63
4 E 3294 2973 47.97 54.44 0.75 0.86
4 E 3294 2973 47.97 54.44 0.75 0.86
5 E 1686 1522 2.16 22.01 0.75 0.86
5 E 1686 1522 2.16 22.01 0.75 0.86
6 E 1278 1153 0.91 8.32 0.75 0.86
6 E 1278 1153 0.91 8.32 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 9274.2 cm-1
Scaled (by 0.9026) Zero Point Vibrational Energy (zpe) 8370.9 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/3-21G*
ABC
5.37740 0.83635 0.83635

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/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 0.762
H3 0.000 1.018 -1.001
H4 0.882 -0.509 -1.001
H5 -0.882 -0.509 -1.001

Atom - Atom Distances (Å)
  C1 F2 H3 H4 H5
C11.40391.07951.07951.0795
F21.40392.03542.03542.0354
H31.07952.03541.76371.7637
H41.07952.03541.76371.7637
H51.07952.03541.76371.7637

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 109.394 F2 C1 H4 109.394
F2 C1 H5 109.394 H3 C1 H4 109.548
H3 C1 H5 109.548 H4 C1 H5 109.548
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.178      
2 F -0.408      
3 H 0.195      
4 H 0.195      
5 H 0.195      


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 -2.340 2.340
CHELPG 0.000 -0.001 -2.336 2.336
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -11.630 0.000 0.000
y 0.000 -11.630 0.000
z 0.000 0.000 -12.246
Traceless
 xyz
x 0.308 0.000 0.000
y 0.000 0.308 0.000
z 0.000 0.000 -0.615
Polar
3z2-r2-1.231
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 1.591 0.000 0.000
y 0.000 1.591 0.000
z 0.000 0.000 1.618


<r2> (average value of r2) Å2
<r2> 21.203
(<r2>)1/2 4.605