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All results from a given calculation for C2F4 (Tetrafluoroethylene)

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 D2H 1Ag
Energy calculated at PBEPBE/6-31G*
 hartrees
Energy at 0K-475.047595
Energy at 298.15K-475.048395
Nuclear repulsion energy241.800508
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 Ag 1858 1831 0.00      
2 Ag 776 765 0.00      
3 Ag 379 374 0.00      
4 Au 186 183 0.00      
5 B1u 1170 1153 316.75      
6 B1u 529 522 1.44      
7 B2g 420 414 0.00      
8 B2u 1324 1305 368.37      
9 B2u 192 189 3.86      
10 B3g 1325 1306 0.00      
11 B3g 525 518 0.00      
12 B3u 399 393 1.72      

Unscaled Zero Point Vibrational Energy (zpe) 4540.7 cm-1
Scaled (by 0.9857) Zero Point Vibrational Energy (zpe) 4475.8 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/6-31G*
ABC
0.17773 0.10626 0.06650

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

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.669
C2 0.000 0.000 -0.669
F3 0.000 1.117 1.395
F4 0.000 -1.117 1.395
F5 0.000 -1.117 -1.395
F6 0.000 1.117 -1.395

Atom - Atom Distances (Å)
  C1 C2 F3 F4 F5 F6
C11.33831.33231.33232.34722.3472
C21.33832.34722.34721.33231.3323
F31.33232.34722.23443.57452.7901
F41.33232.34722.23442.79013.5745
F52.34721.33233.57452.79012.2344
F62.34721.33232.79013.57452.2344

picture of Tetrafluoroethylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 F5 123.014 C1 C2 F6 123.014
C2 C1 F3 123.014 C2 C1 F4 123.014
F3 C1 F4 113.972 F5 C2 F6 113.972
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 0.408      
2 C 0.408      
3 F -0.204      
4 F -0.204      
5 F -0.204      
6 F -0.204      


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        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -28.714 0.000 0.000
y 0.000 -30.526 0.000
z 0.000 0.000 -30.672
Traceless
 xyz
x 1.884 0.000 0.000
y 0.000 -0.833 0.000
z 0.000 0.000 -1.052
Polar
3z2-r2-2.103
x2-y21.812
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.012 0.000 0.000
y 0.000 3.517 0.000
z 0.000 0.000 4.879


<r2> (average value of r2) Å2
<r2> 139.087
(<r2>)1/2 11.794