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All results from a given calculation for C2F6 (hexafluoroethane)

using model chemistry: MP4/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D3D 1A1g
Energy calculated at MP4/3-21G
 hartrees
Energy at 0K-669.657298
Energy at 298.15K-669.659865
HF Energy-668.737304
Nuclear repulsion energy453.614105
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 MP4/3-21G
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 1369 1328        
2 A1g 756 733        
3 A1g 339 329        
4 A1u 59 57        
5 A2u 1121 1087        
6 A2u 654 634        
7 Eg 1281 1243        
7 Eg 1281 1243        
8 Eg 596 578        
8 Eg 596 578        
9 Eg 358 347        
9 Eg 358 347        
10 Eu 1308 1269        
10 Eu 1308 1269        
11 Eu 493 478        
11 Eu 493 478        
12 Eu 200 194        
12 Eu 200 194        

Unscaled Zero Point Vibrational Energy (zpe) 6383.7 cm-1
Scaled (by 0.9698) Zero Point Vibrational Energy (zpe) 6190.9 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 MP4/3-21G
ABC
0.08865 0.06013 0.06013

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4/3-21G

Point Group is D3d

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.764
C2 0.000 0.000 -0.764
F3 0.000 1.292 1.226
F4 -1.119 -0.646 1.226
F5 1.119 -0.646 1.226
F6 0.000 -1.292 -1.226
F7 -1.119 0.646 -1.226
F8 1.119 0.646 -1.226

Atom - Atom Distances (Å)
  C1 C2 F3 F4 F5 F6 F7 F8
C11.52701.37181.37181.37182.37182.37182.3718
C21.52702.37182.37182.37181.37181.37181.3718
F31.37182.37182.23712.23713.56132.77092.7709
F41.37182.37182.23712.23712.77092.77093.5613
F51.37182.37182.23712.23712.77093.56132.7709
F62.37181.37183.56132.77092.77092.23712.2371
F72.37181.37182.77092.77093.56132.23712.2371
F82.37181.37182.77093.56132.77092.23712.2371

picture of hexafluoroethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 F6 109.690 C1 C2 F7 109.690
C1 C2 F8 109.690 C2 C1 F3 109.690
C2 C1 F4 109.690 C2 C1 F5 109.690
F3 C1 F4 109.252 F3 C1 F5 109.252
F4 C1 F5 109.252 F6 C2 F7 109.252
F6 C2 F8 109.252 F7 C2 F8 109.252
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at MP4/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 1.060      
2 C 1.060      
3 F -0.353      
4 F -0.353      
5 F -0.353      
6 F -0.353      
7 F -0.353      
8 F -0.353      


Electric dipole moments


Electric Quadrupole moment
Quadrupole components in D Å


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


<r2> (average value of r2) Å2
<r2> 204.971
(<r2>)1/2 14.317