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 C2F4 (Tetrafluoroethylene)

using model chemistry: B3LYP/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D2H 1Ag
Energy calculated at B3LYP/6-31+G**
 hartrees
Energy at 0K-475.536440
Energy at 298.15K-475.537426
Nuclear repulsion energy243.019827
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 B3LYP/6-31+G**
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 Ag 1919 1850 0.00      
2 Ag 789 761 0.00      
3 Ag 391 377 0.00      
4 Au 195 188 0.00      
5 B1u 1179 1137 392.36      
6 B1u 543 523 2.92      
7 B2g 522 504 0.00      
8 B2u 1326 1278 452.66      
9 B2u 206 199 5.28      
10 B3g 1328 1281 0.00      
11 B3g 545 526 0.00      
12 B3u 405 391 4.61      

Unscaled Zero Point Vibrational Energy (zpe) 4674.0 cm-1
Scaled (by 0.9642) Zero Point Vibrational Energy (zpe) 4506.7 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 B3LYP/6-31+G**
ABC
0.18065 0.10676 0.06710

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-31+G**

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.663
C2 0.000 0.000 -0.663
F3 0.000 1.108 1.392
F4 0.000 -1.108 1.392
F5 0.000 -1.108 -1.392
F6 0.000 1.108 -1.392

Atom - Atom Distances (Å)
  C1 C2 F3 F4 F5 F6
C11.32611.32671.32672.33522.3352
C21.32612.33522.33521.32671.3267
F31.32672.33522.21623.55922.7850
F41.32672.33522.21622.78503.5592
F52.33521.32673.55922.78502.2162
F62.33521.32672.78503.55922.2162

picture of Tetrafluoroethylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 F5 123.356 C1 C2 F6 123.356
C2 C1 F3 123.356 C2 C1 F4 123.356
F3 C1 F4 113.289 F5 C2 F6 113.289
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.580     0.259
2 C 0.580     0.259
3 F -0.290     -0.129
4 F -0.290     -0.129
5 F -0.290     -0.129
6 F -0.290     -0.129


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 0.000 0.000
CHELPG        
AIM        
ESP 0.000 0.000 0.000 0.000


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -29.563 0.000 0.000
y 0.000 -32.982 0.000
z 0.000 0.000 -32.865
Traceless
 xyz
x 3.361 0.000 0.000
y 0.000 -1.768 0.000
z 0.000 0.000 -1.592
Polar
3z2-r2-3.185
x2-y23.419
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.676 0.000 0.000
y 0.000 4.015 0.000
z 0.000 0.000 5.439


<r2> (average value of r2) Å2
<r2> 139.151
(<r2>)1/2 11.796