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 CF2 (Difluoromethylene)

using model chemistry: PBEPBE/STO-3G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
2 1 yes C2V 3B1

State 1 (1A1)

Jump to S2C1
Energy calculated at PBEPBE/STO-3G
 hartrees
Energy at 0K-234.115029
Energy at 298.15K-234.114701
HF Energy-234.115029
Nuclear repulsion energy61.262534
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/STO-3G
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A1 1248 1141 32.59      
2 A1 591 540 1.49      
3 B2 1197 1093 102.35      

Unscaled Zero Point Vibrational Energy (zpe) 1517.9 cm-1
Scaled (by 0.9136) Zero Point Vibrational Energy (zpe) 1386.8 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/STO-3G
ABC
2.42453 0.38493 0.33219

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/STO-3G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.655
F2 0.000 1.074 -0.218
F3 0.000 -1.074 -0.218

Atom - Atom Distances (Å)
  C1 F2 F3
C11.38381.3838
F21.38382.1471
F31.38382.1471

picture of Difluoromethylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
F2 C1 F3 101.756
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.046      
2 F -0.023      
3 F -0.023      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 -1.144 1.144
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -12.101 0.000 0.000
y 0.000 -13.116 0.000
z 0.000 0.000 -14.925
Traceless
 xyz
x 1.920 0.000 0.000
y 0.000 0.397 0.000
z 0.000 0.000 -2.316
Polar
3z2-r2-4.632
x2-y21.015
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 0.611 0.000 0.000
y 0.000 1.497 0.000
z 0.000 0.000 0.724


<r2> (average value of r2) Å2
<r2> 32.534
(<r2>)1/2 5.704

State 2 (3B1)

Jump to S1C1
Energy calculated at PBEPBE/STO-3G
 hartrees
Energy at 0K-234.036337
Energy at 298.15K-234.035927
Nuclear repulsion energy59.519291
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/STO-3G
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A1 1137 1039 3.65      
2 A1 473 432 1.20      
3 B2 1372 1253 62.08      

Unscaled Zero Point Vibrational Energy (zpe) 1490.6 cm-1
Scaled (by 0.9136) Zero Point Vibrational Energy (zpe) 1361.8 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/STO-3G
ABC
3.77214 0.31477 0.29053

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/STO-3G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.525
F2 0.000 1.187 -0.175
F3 0.000 -1.187 -0.175

Atom - Atom Distances (Å)
  C1 F2 F3
C11.37821.3782
F21.37822.3744
F31.37822.3744

picture of Difluoromethylene state 2 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
F2 C1 F3 118.950
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.018      
2 F -0.009      
3 F -0.009      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 -0.390 0.390
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -12.905 0.000 0.000
y 0.000 -12.913 0.000
z 0.000 0.000 -12.920
Traceless
 xyz
x 0.012 0.000 0.000
y 0.000 -0.001 0.000
z 0.000 0.000 -0.011
Polar
3z2-r2-0.022
x2-y20.009
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 0.333 0.000 0.000
y 0.000 1.561 0.000
z 0.000 0.000 0.789


<r2> (average value of r2) Å2
<r2> 35.641
(<r2>)1/2 5.970