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All results from a given calculation for C2F6 (hexafluoroethane)

using model chemistry: MP2/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D3D 1A1g
Energy calculated at MP2/6-31G(2df,p)
 hartrees
Energy at 0K-674.056187
Energy at 298.15K-674.059058
HF Energy-672.418991
Nuclear repulsion energy465.969127
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 MP2/6-31G(2df,p)
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A1g 1494 1411 0.00      
2 A1g 828 782 0.00      
3 A1g 356 336 0.00      
4 A1u 75 71 0.00      
5 A2u 1156 1092 255.85      
6 A2u 722 682 36.28      
7 Eg 1290 1219 0.00      
7 Eg 1290 1219 0.00      
8 Eg 630 595 0.00      
8 Eg 630 595 0.00      
9 Eg 384 363 0.00      
9 Eg 384 363 0.00      
10 Eu 1315 1242 478.52      
10 Eu 1315 1242 478.52      
11 Eu 529 500 4.37      
11 Eu 529 500 4.37      
12 Eu 212 201 2.34      
12 Eu 212 201 2.34      

Unscaled Zero Point Vibrational Energy (zpe) 6676.7 cm-1
Scaled (by 0.9445) Zero Point Vibrational Energy (zpe) 6306.1 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 MP2/6-31G(2df,p)
ABC
0.09501 0.06262 0.06262

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-31G(2df,p)

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 1.248 1.208
F4 -1.080 -0.624 1.208
F5 1.080 -0.624 1.208
F6 0.000 -1.248 -1.208
F7 -1.080 0.624 -1.208
F8 1.080 0.624 -1.208

Atom - Atom Distances (Å)
  C1 C2 F3 F4 F5 F6 F7 F8
C11.53181.32371.32371.32372.33542.33542.3354
C21.53182.33542.33542.33541.32371.32371.3237
F31.32372.33542.16102.16103.47362.71962.7196
F41.32372.33542.16102.16102.71962.71963.4736
F51.32372.33542.16102.16102.71963.47362.7196
F62.33541.32373.47362.71962.71962.16102.1610
F72.33541.32372.71962.71963.47362.16102.1610
F82.33541.32372.71963.47362.71962.16102.1610

picture of hexafluoroethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 F6 109.522 C1 C2 F7 109.522
C1 C2 F8 109.522 C2 C1 F3 109.522
C2 C1 F4 109.522 C2 C1 F5 109.522
F3 C1 F4 109.420 F3 C1 F5 109.420
F4 C1 F5 109.420 F6 C2 F7 109.420
F6 C2 F8 109.420 F7 C2 F8 109.420
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability