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: LSDA/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 LSDA/3-21G*
 hartrees
Energy at 0K-137.626257
Energy at 298.15K-137.627127
HF Energy-137.626257
Nuclear repulsion energy31.709529
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 LSDA/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' 3094 3038 3.05      
2 A' 1496 1469 2.39      
3 A' 1226 1204 47.62      
4 A' 199 195 118.89      
5 A" 3249 3190 17.10      
6 A" 1143 1122 3.07      

Unscaled Zero Point Vibrational Energy (zpe) 5203.0 cm-1
Scaled (by 0.982) Zero Point Vibrational Energy (zpe) 5109.3 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 LSDA/3-21G*
ABC
8.96979 0.99677 0.89708

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.000 0.659 0.000
F2 -0.000 -0.698 0.000
H3 0.000 1.164 0.966
H4 0.000 1.164 -0.966

Atom - Atom Distances (Å)
  C1 F2 H3 H4
C11.35631.09011.0901
F21.35632.09762.0976
H31.09012.09761.9312
H41.09012.09761.9312

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 117.648 F2 C1 H4 117.648
H3 C1 H4 124.703
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at LSDA/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.199      
2 F -0.206      
3 H 0.202      
4 H 0.202      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 1.126 0.000 1.126
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -12.290 0.000 0.000
y 0.000 -10.979 0.000
z 0.000 0.000 -10.305
Traceless
 xyz
x -1.648 0.000 0.000
y 0.000 0.319 0.000
z 0.000 0.000 1.329
Polar
3z2-r22.659
x2-y2-1.311
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 0.698 0.000 0.000
y 0.000 1.868 0.000
z 0.000 0.000 1.605


<r2> (average value of r2) Å2
<r2> 18.550
(<r2>)1/2 4.307