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 C2F6 (hexafluoroethane)

using model chemistry: BLYP/6-311G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D3D 1A1g
Energy calculated at BLYP/6-311G**
 hartrees
Energy at 0K-675.404673
Energy at 298.15K-675.407147
Nuclear repulsion energy454.886955
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 BLYP/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 A1g 1305 1299 0.00      
2 A1g 753 750 0.00      
3 A1g 327 326 0.00      
4 A1u 50 50 0.00      
5 A2u 1047 1043 298.33      
6 A2u 669 667 28.70      
7 Eg 1132 1127 0.00      
7 Eg 1132 1127 0.00      
8 Eg 576 574 0.00      
8 Eg 576 574 0.00      
9 Eg 356 355 0.00      
9 Eg 356 355 0.00      
10 Eu 1144 1139 557.20      
10 Eu 1144 1139 557.27      
11 Eu 490 488 2.49      
11 Eu 490 488 2.49      
12 Eu 205 205 2.83      
12 Eu 205 205 2.83      

Unscaled Zero Point Vibrational Energy (zpe) 5977.6 cm-1
Scaled (by 0.9961) Zero Point Vibrational Energy (zpe) 5954.3 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 BLYP/6-311G**
ABC
0.09123 0.05933 0.05933

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

Point Group is D3d

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.783
C2 0.000 0.000 -0.783
F3 0.000 1.273 1.246
F4 -1.103 -0.637 1.246
F5 1.103 -0.637 1.246
F6 0.000 -1.273 -1.246
F7 -1.103 0.637 -1.246
F8 1.103 0.637 -1.246

Atom - Atom Distances (Å)
  C1 C2 F3 F4 F5 F6 F7 F8
C11.56521.35501.35501.35502.39532.39532.3953
C21.56522.39532.39532.39531.35501.35501.3550
F31.35502.39532.20522.20523.56322.79892.7989
F41.35502.39532.20522.20522.79892.79893.5632
F51.35502.39532.20522.20522.79893.56322.7989
F62.39531.35503.56322.79892.79892.20522.2052
F72.39531.35502.79892.79893.56322.20522.2052
F82.39531.35502.79893.56322.79892.20522.2052

picture of hexafluoroethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 F6 110.010 C1 C2 F7 110.010
C1 C2 F8 110.010 C2 C1 F3 110.010
C2 C1 F4 110.010 C2 C1 F5 110.010
F3 C1 F4 108.927 F3 C1 F5 108.927
F4 C1 F5 108.927 F6 C2 F7 108.927
F6 C2 F8 108.927 F7 C2 F8 108.927
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/6-311G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.495      
2 C 0.495      
3 F -0.165      
4 F -0.165      
5 F -0.165      
6 F -0.165      
7 F -0.165      
8 F -0.165      


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 -41.576 0.000 0.000
y 0.000 -41.576 0.000
z 0.000 0.000 -41.595
Traceless
 xyz
x 0.009 0.000 0.000
y 0.000 0.009 0.000
z 0.000 0.000 -0.019
Polar
3z2-r2-0.038
x2-y20.000
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.782 0.000 0.000
y 0.000 3.782 0.000
z 0.000 0.000 3.587


<r2> (average value of r2) Å2
<r2> 204.725
(<r2>)1/2 14.308