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All results from a given calculation for C2F6 (hexafluoroethane)

using model chemistry: QCISD/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D3D 1A1g
Energy calculated at QCISD/6-31G*
 hartrees
Energy at 0K-673.669827
Energy at 298.15K-673.672617
HF Energy-672.379447
Nuclear repulsion energy461.884825
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 QCISD/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 A1g 1507 1435 0.00      
2 A1g 817 778 0.00      
3 A1g 355 338 0.00      
4 A1u 66 63 0.00      
5 A2u 1156 1101 289.09      
6 A2u 709 675 41.24      
7 Eg 1315 1252 0.00      
7 Eg 1315 1252 0.00      
8 Eg 624 594 0.00      
8 Eg 624 594 0.00      
9 Eg 381 362 0.00      
9 Eg 381 362 0.00      
10 Eu 1323 1260 513.29      
10 Eu 1323 1260 513.29      
11 Eu 518 494 6.14      
11 Eu 518 494 6.14      
12 Eu 215 204 2.95      
12 Eu 215 204 2.95      

Unscaled Zero Point Vibrational Energy (zpe) 6680.3 cm-1
Scaled (by 0.9523) Zero Point Vibrational Energy (zpe) 6361.6 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 QCISD/6-31G*
ABC
0.09323 0.06161 0.06161

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

Point Group is D3d

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.766
C2 0.000 0.000 -0.766
F3 0.000 1.259 1.218
F4 -1.091 -0.630 1.218
F5 1.091 -0.630 1.218
F6 0.000 -1.259 -1.218
F7 -1.091 0.630 -1.218
F8 1.091 0.630 -1.218

Atom - Atom Distances (Å)
  C1 C2 F3 F4 F5 F6 F7 F8
C11.53201.33821.33821.33822.35002.35002.3500
C21.53202.35002.35002.35001.33821.33821.3382
F31.33822.35002.18152.18153.50422.74242.7424
F41.33822.35002.18152.18152.74242.74243.5042
F51.33822.35002.18152.18152.74243.50422.7424
F62.35001.33823.50422.74242.74242.18152.1815
F72.35001.33822.74242.74243.50422.18152.1815
F82.35001.33822.74243.50422.74242.18152.1815

picture of hexafluoroethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 F6 109.743 C1 C2 F7 109.743
C1 C2 F8 109.743 C2 C1 F3 109.743
C2 C1 F4 109.743 C2 C1 F5 109.743
F3 C1 F4 109.199 F3 C1 F5 109.199
F4 C1 F5 109.199 F6 C2 F7 109.199
F6 C2 F8 109.199 F7 C2 F8 109.199
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at QCISD/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 1.052      
2 C 1.052      
3 F -0.351      
4 F -0.351      
5 F -0.351      
6 F -0.351      
7 F -0.351      
8 F -0.351      


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> 198.608
(<r2>)1/2 14.093