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 CH2F (fluoromethyl radical)

using model chemistry: TPSSh/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 TPSSh/3-21G*
 hartrees
Energy at 0K-138.310371
Energy at 298.15K-138.311542
HF Energy-138.310371
Nuclear repulsion energy31.373679
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 TPSSh/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' 3138 3031 7.77      
2 A' 1536 1483 5.62      
3 A' 1165 1125 55.38      
4 A' 466 450 66.55      
5 A" 3291 3178 30.95      
6 A" 1165 1125 4.77      

Unscaled Zero Point Vibrational Energy (zpe) 5380.7 cm-1
Scaled (by 0.9657) Zero Point Vibrational Energy (zpe) 5196.2 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 TPSSh/3-21G*
ABC
8.93052 0.96811 0.87854

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.023 0.675 0.000
F2 0.023 -0.706 0.000
H3 -0.169 1.152 0.953
H4 -0.169 1.152 -0.953

Atom - Atom Distances (Å)
  C1 F2 H3 H4
C11.38121.08291.0829
F21.38122.09702.0970
H31.08292.09701.9064
H41.08292.09701.9064

picture of fluoromethyl radical state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
F2 C1 H3 116.121 F2 C1 H4 116.121
H3 C1 H4 123.342
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at TPSSh/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.132      
2 F -0.260      
3 H 0.196      
4 H 0.196      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.383 1.368 0.000 1.420
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 0.703 -0.098 0.000
y -0.098 1.840 0.000
z 0.000 0.000 1.597


<r2> (average value of r2) Å2
<r2> 18.725
(<r2>)1/2 4.327