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: PBEPBE/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 2A
Energy calculated at PBEPBE/6-311G*
 hartrees
Energy at 0K-238.144539
Energy at 298.15K-238.145755
HF Energy-238.144539
Nuclear repulsion energy69.512163
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 PBEPBE/6-311G*
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' 3021 2989 39.85      
2 A' 1133 1122 86.71      
3 A' 982 972 10.05      
4 A' 529 523 3.29      
5 A" 1305 1291 58.47      
6 A" 1139 1127 224.24      

Unscaled Zero Point Vibrational Energy (zpe) 4054.2 cm-1
Scaled (by 0.9896) Zero Point Vibrational Energy (zpe) 4012.0 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 PBEPBE/6-311G*
ABC
2.22073 0.35788 0.31326

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/6-311G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.031 0.512 0.000
H2 -0.752 1.285 0.000
F3 0.031 -0.242 1.108
F4 0.031 -0.242 -1.108

Atom - Atom Distances (Å)
  C1 H2 F3 F4
C11.10061.34071.3407
H21.10062.04332.0433
F31.34072.04332.2164
F41.34072.04332.2164

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 113.276 H2 C1 F4 113.276
F3 C1 F4 111.492
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.112      
2 H 0.193      
3 F -0.153      
4 F -0.153      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.757 1.007 0.000 1.260
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -15.328 -0.971 0.000
y -0.971 -14.826 0.000
z 0.000 0.000 -17.213
Traceless
 xyz
x 0.692 -0.971 0.000
y -0.971 1.444 0.000
z 0.000 0.000 -2.136
Polar
3z2-r2-4.272
x2-y2-0.502
xy-0.971
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.508 -0.251 0.000
y -0.251 1.873 0.000
z 0.000 0.000 2.189


<r2> (average value of r2) Å2
<r2> 36.840
(<r2>)1/2 6.070