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All results from a given calculation for CHF2 (difluoromethyl radical)

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 CS 2A
Energy calculated at HF/3-21G*
 hartrees
Energy at 0K-235.979242
Energy at 298.15K-235.980521
HF Energy-235.979242
Nuclear repulsion energy69.310459
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 A' 3381 3051 29.10 67.29 0.23 0.38
2 A' 1229 1109 99.74 5.38 0.13 0.23
3 A' 1076 971 14.66 5.58 0.61 0.75
4 A' 549 496 12.96 1.50 0.74 0.85
5 A" 1509 1362 89.67 4.34 0.75 0.86
6 A" 1324 1195 135.84 6.95 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 4533.9 cm-1
Scaled (by 0.9026) Zero Point Vibrational Energy (zpe) 4092.3 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
2.23575 0.35397 0.30958

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.028 0.510 0.000
H2 -0.678 1.313 0.000
F3 0.028 -0.243 1.115
F4 0.028 -0.243 -1.115

Atom - Atom Distances (Å)
  C1 H2 F3 F4
C11.06931.34601.3460
H21.06932.04072.0407
F31.34602.04072.2307
F41.34602.04072.2307

picture of difluoromethyl radical state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H2 C1 F3 114.845 H2 C1 F4 114.845
F3 C1 F4 111.914
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.561      
2 H 0.213      
3 F -0.387      
4 F -0.387      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.643 1.883 0.000 1.990
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -14.749 -0.762 0.000
y -0.762 -14.119 0.000
z 0.000 0.000 -18.458
Traceless
 xyz
x 1.540 -0.762 0.000
y -0.762 2.484 0.000
z 0.000 0.000 -4.024
Polar
3z2-r2-8.049
x2-y2-0.630
xy-0.762
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 0.861 -0.280 0.000
y -0.280 1.275 0.000
z 0.000 0.000 1.527


<r2> (average value of r2) Å2
<r2> 37.076
(<r2>)1/2 6.089