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: ROHF/6-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 2A
Energy calculated at ROHF/6-31G
 hartrees
Energy at 0K-237.188441
Energy at 298.15K-237.189699
HF Energy-237.188441
Nuclear repulsion energy68.917512
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 ROHF/6-31G
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' 3424 3066 16.14 71.28 0.22 0.36
2 A' 1188 1064 117.88 6.85 0.15 0.26
3 A' 1064 953 10.78 3.87 0.56 0.72
4 A' 535 479 14.60 1.88 0.73 0.85
5 A" 1454 1301 73.72 4.17 0.75 0.86
6 A" 1270 1137 194.88 7.32 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 4467.7 cm-1
Scaled (by 0.8953) Zero Point Vibrational Energy (zpe) 4000.0 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 ROHF/6-31G
ABC
2.18785 0.35121 0.30679

See section I.F.4 to change rotational constant units
Geometric Data calculated at ROHF/6-31G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.029 0.519 0.000
H2 -0.695 1.306 0.000
F3 0.029 -0.246 1.120
F4 0.029 -0.246 -1.120

Atom - Atom Distances (Å)
  C1 H2 F3 F4
C11.06901.35601.3560
H21.06902.04562.0456
F31.35602.04562.2390
F41.35602.04562.2390

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 114.520 H2 C1 F4 114.520
F3 C1 F4 111.299
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at ROHF/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.627      
2 H 0.181      
3 F -0.404      
4 F -0.404      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.680 2.164 0.000 2.268
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -14.906 -0.815 0.000
y -0.815 -14.255 0.000
z 0.000 0.000 -19.160
Traceless
 xyz
x 1.801 -0.815 0.000
y -0.815 2.778 0.000
z 0.000 0.000 -4.579
Polar
3z2-r2-9.159
x2-y2-0.651
xy-0.815
xz0.000
yz0.000


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


<r2> (average value of r2) Å2
<r2> 37.533
(<r2>)1/2 6.126