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 CHF2 (difluoromethyl radical)

using model chemistry: B3LYP/CEP-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 2A
Energy calculated at B3LYP/CEP-31G
 hartrees
Energy at 0K-54.505885
Energy at 298.15K-54.507037
HF Energy-54.505885
Nuclear repulsion energy38.102840
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 B3LYP/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 A' 3172 3071 29.20      
2 A' 1060 1026 93.23      
3 A' 936 906 5.22      
4 A' 484 468 8.17      
5 A" 1280 1240 33.95      
6 A" 1101 1066 227.11      

Unscaled Zero Point Vibrational Energy (zpe) 4015.5 cm-1
Scaled (by 0.9684) Zero Point Vibrational Energy (zpe) 3888.6 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 B3LYP/CEP-31G
ABC
2.07225 0.33533 0.29285

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/CEP-31G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.031 0.535 0.000
H2 -0.733 1.327 0.000
F3 0.031 -0.252 1.145
F4 0.031 -0.252 -1.145

Atom - Atom Distances (Å)
  C1 H2 F3 F4
C11.09971.38981.3898
H21.09972.09462.0946
F31.38982.09462.2908
F41.38982.09462.2908

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 114.058 H2 C1 F4 114.058
F3 C1 F4 111.003
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/CEP-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.115      
2 H 0.208      
3 F -0.162      
4 F -0.162      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.997 1.830 0.000 2.084
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -15.307 -1.214 0.000
y -1.214 -14.628 0.000
z 0.000 0.000 -18.948
Traceless
 xyz
x 1.481 -1.214 0.000
y -1.214 2.500 0.000
z 0.000 0.000 -3.980
Polar
3z2-r2-7.961
x2-y2-0.679
xy-1.214
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.159 -0.132 0.000
y -0.132 1.716 0.000
z 0.000 0.000 2.174


<r2> (average value of r2) Å2
<r2> 32.893
(<r2>)1/2 5.735