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/6-31G**

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/6-31G**
 hartrees
Energy at 0K-237.460116
Energy at 298.15K-237.459856
HF Energy-237.460116
Nuclear repulsion energy63.536765
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/6-31G**
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A1 1196 1180 91.72      
2 A1 629 621 1.99      
3 B2 1091 1076 292.58      

Unscaled Zero Point Vibrational Energy (zpe) 1458.0 cm-1
Scaled (by 0.9863) Zero Point Vibrational Energy (zpe) 1438.0 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/6-31G**
ABC
2.75962 0.40578 0.35376

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.614
F2 0.000 1.046 -0.205
F3 0.000 -1.046 -0.205

Atom - Atom Distances (Å)
  C1 F2 F3
C11.32781.3278
F21.32782.0913
F31.32782.0913

picture of Difluoromethylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
F2 C1 F3 103.899
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.292      
2 F -0.146      
3 F -0.146      


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 -0.739 0.739
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -13.875 0.000 0.000
y 0.000 -15.119 0.000
z 0.000 0.000 -16.508
Traceless
 xyz
x 1.938 0.000 0.000
y 0.000 0.073 0.000
z 0.000 0.000 -2.011
Polar
3z2-r2-4.023
x2-y21.244
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.475 0.000 0.000
y 0.000 2.307 0.000
z 0.000 0.000 1.576


<r2> (average value of r2) Å2
<r2> 32.168
(<r2>)1/2 5.672

State 2 (3B1)

Jump to S1C1
Energy calculated at PBEPBE/6-31G**
 hartrees
Energy at 0K-237.377484
Energy at 298.15K-237.377145
Nuclear repulsion energy61.415354
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/6-31G**
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A1 1116 1101 33.22      
2 A1 492 485 5.19      
3 B2 1303 1285 234.18      

Unscaled Zero Point Vibrational Energy (zpe) 1455.2 cm-1
Scaled (by 0.9863) Zero Point Vibrational Energy (zpe) 1435.3 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/6-31G**
ABC
4.19993 0.33195 0.30764

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.498
F2 0.000 1.156 -0.166
F3 0.000 -1.156 -0.166

Atom - Atom Distances (Å)
  C1 F2 F3
C11.33291.3329
F21.33292.3122
F31.33292.3122

picture of Difluoromethylene state 2 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
F2 C1 F3 120.302
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.335      
2 F -0.168      
3 F -0.168      


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 0.159 0.159
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -14.812 0.000 0.000
y 0.000 -15.311 0.000
z 0.000 0.000 -14.346
Traceless
 xyz
x 0.017 0.000 0.000
y 0.000 -0.732 0.000
z 0.000 0.000 0.715
Polar
3z2-r21.431
x2-y20.499
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.127 0.000 0.000
y 0.000 2.191 0.000
z 0.000 0.000 1.463


<r2> (average value of r2) Å2
<r2> 35.296
(<r2>)1/2 5.941