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: B3PW91/6-311G*

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 B3PW91/6-311G*
 hartrees
Energy at 0K-237.671894
Energy at 298.15K-237.671668
HF Energy-237.671894
Nuclear repulsion energy64.629923
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 B3PW91/6-311G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A1 1245 1199 127.95      
2 A1 675 650 3.71      
3 B2 1131 1089 370.85      

Unscaled Zero Point Vibrational Energy (zpe) 1525.6 cm-1
Scaled (by 0.9627) Zero Point Vibrational Energy (zpe) 1468.7 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 B3PW91/6-311G*
ABC
2.90170 0.41755 0.36502

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-311G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.599
F2 0.000 1.031 -0.200
F3 0.000 -1.031 -0.200

Atom - Atom Distances (Å)
  C1 F2 F3
C11.30371.3037
F21.30372.0616
F31.30372.0616

picture of Difluoromethylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
F2 C1 F3 104.499
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.205      
2 F -0.103      
3 F -0.103      


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 -0.646 0.646
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -14.093 0.000 0.000
y 0.000 -15.811 0.000
z 0.000 0.000 -16.946
Traceless
 xyz
x 2.286 0.000 0.000
y 0.000 -0.292 0.000
z 0.000 0.000 -1.994
Polar
3z2-r2-3.987
x2-y21.719
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.531 0.000 0.000
y 0.000 2.236 0.000
z 0.000 0.000 1.536


<r2> (average value of r2) Å2
<r2> 31.746
(<r2>)1/2 5.634

State 2 (3B1)

Jump to S1C1
Energy calculated at B3PW91/6-311G*
 hartrees
Energy at 0K-237.593024
Energy at 298.15K-237.592711
Nuclear repulsion energy62.289819
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 B3PW91/6-311G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A1 1151 1108 56.32      
2 A1 517 498 7.99      
3 B2 1327 1278 296.23      

Unscaled Zero Point Vibrational Energy (zpe) 1497.5 cm-1
Scaled (by 0.9627) Zero Point Vibrational Energy (zpe) 1441.7 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 B3PW91/6-311G*
ABC
4.22486 0.34309 0.31732

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-311G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.496
F2 0.000 1.137 -0.165
F3 0.000 -1.137 -0.165

Atom - Atom Distances (Å)
  C1 F2 F3
C11.31551.3155
F21.31552.2743
F31.31552.2743

picture of Difluoromethylene state 2 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
F2 C1 F3 119.629
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.290      
2 F -0.145      
3 F -0.145      


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 0.399 0.399
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -15.025 0.000 0.000
y 0.000 -16.159 0.000
z 0.000 0.000 -14.527
Traceless
 xyz
x 0.318 0.000 0.000
y 0.000 -1.383 0.000
z 0.000 0.000 1.066
Polar
3z2-r22.131
x2-y21.134
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.108 0.000 0.000
y 0.000 2.061 0.000
z 0.000 0.000 1.403


<r2> (average value of r2) Å2
<r2> 34.762
(<r2>)1/2 5.896