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: B2PLYP=FULL/cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 2A
Energy calculated at B2PLYP=FULL/cc-pVTZ
 hartrees
Energy at 0K-238.282181
Energy at 298.15K 
HF Energy-238.065882
Nuclear repulsion energy70.292210
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 B2PLYP=FULL/cc-pVTZ
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' 3155 3015 24.91 89.47 0.23 0.37
2 A' 1187 1134 89.81 4.42 0.18 0.30
3 A' 1022 977 8.48 2.32 0.43 0.60
4 A' 553 529 4.25 1.37 0.69 0.82
5 A" 1357 1297 58.52 2.75 0.75 0.86
6 A" 1204 1150 231.22 3.99 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 4238.3 cm-1
Scaled (by 0.9558) Zero Point Vibrational Energy (zpe) 4051.0 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 B2PLYP=FULL/cc-pVTZ
ABC
2.25895 0.36669 0.32025

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULL/cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.030 0.507 0.000
H2 -0.717 1.292 0.000
F3 0.030 -0.241 1.095
F4 0.030 -0.241 -1.095

Atom - Atom Distances (Å)
  C1 H2 F3 F4
C11.08391.32621.3262
H21.08392.02682.0268
F31.32622.02682.1904
F41.32622.02682.1904

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 114.112 H2 C1 F4 114.112
F3 C1 F4 111.342
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability