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: HSEh1PBE/cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D3D 1A1g
Energy calculated at HSEh1PBE/cc-pVTZ
 hartrees
Energy at 0K-674.954130
Energy at 298.15K-674.956962
HF Energy-674.954130
Nuclear repulsion energy464.031640
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 HSEh1PBE/cc-pVTZ
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 1432 1376 0.00      
2 A1g 821 789 0.00      
3 A1g 348 335 0.00      
4 A1u 68 65 0.00      
5 A2u 1135 1091 284.78      
6 A2u 721 693 36.49      
7 Eg 1252 1204 0.00      
7 Eg 1252 1203 0.00      
8 Eg 622 597 0.00      
8 Eg 622 597 0.00      
9 Eg 380 366 0.00      
9 Eg 380 366 0.00      
10 Eu 1270 1221 556.78      
10 Eu 1270 1221 556.81      
11 Eu 525 504 4.02      
11 Eu 525 504 4.02      
12 Eu 214 205 2.49      
12 Eu 214 205 2.49      

Unscaled Zero Point Vibrational Energy (zpe) 6525.1 cm-1
Scaled (by 0.9611) Zero Point Vibrational Energy (zpe) 6271.3 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 HSEh1PBE/cc-pVTZ
ABC
0.09500 0.06169 0.06169

See section I.F.4 to change rotational constant units
Geometric Data calculated at HSEh1PBE/cc-pVTZ

Point Group is D3d

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.773
C2 0.000 0.000 -0.773
F3 0.000 1.248 1.222
F4 -1.081 -0.624 1.222
F5 1.081 -0.624 1.222
F6 0.000 -1.248 -1.222
F7 -1.081 0.624 -1.222
F8 1.081 0.624 -1.222

Atom - Atom Distances (Å)
  C1 C2 F3 F4 F5 F6 F7 F8
C11.54531.32611.32611.32612.35282.35282.3528
C21.54532.35282.35282.35281.32611.32611.3261
F31.32612.35282.16102.16103.49292.74412.7441
F41.32612.35282.16102.16102.74412.74413.4929
F51.32612.35282.16102.16102.74413.49292.7441
F62.35281.32613.49292.74412.74412.16102.1610
F72.35281.32612.74412.74413.49292.16102.1610
F82.35281.32612.74413.49292.74412.16102.1610

picture of hexafluoroethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 F6 109.808 C1 C2 F7 109.808
C1 C2 F8 109.808 C2 C1 F3 109.808
C2 C1 F4 109.808 C2 C1 F5 109.808
F3 C1 F4 109.133 F3 C1 F5 109.133
F4 C1 F5 109.133 F6 C2 F7 109.133
F6 C2 F8 109.133 F7 C2 F8 109.133
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HSEh1PBE/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.412      
2 C 0.412      
3 F -0.137      
4 F -0.137      
5 F -0.137      
6 F -0.137      
7 F -0.137      
8 F -0.137      


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 -41.214 0.000 0.000
y 0.000 -41.214 0.000
z 0.000 0.000 -41.020
Traceless
 xyz
x -0.097 0.000 0.000
y 0.000 -0.097 0.000
z 0.000 0.000 0.194
Polar
3z2-r20.388
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 4.049 0.000 0.000
y 0.000 4.049 -0.000
z 0.000 -0.000 3.963


<r2> (average value of r2) Å2
<r2> 197.570
(<r2>)1/2 14.056