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All results from a given calculation for CHF2CHF2 (1,1,2,2-tetrafluoroethane)

using model chemistry: HSEh1PBE/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2H 1AG
Energy calculated at HSEh1PBE/6-311G*
 hartrees
Energy at 0K-476.483440
Energy at 298.15K-476.487438
HF Energy-476.483440
Nuclear repulsion energy266.932889
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/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 Ag 3125 2999 0.00      
2 Ag 1492 1432 0.00      
3 Ag 1175 1127 0.00      
4 Ag 1128 1082 0.00      
5 Ag 634 608 0.00      
6 Ag 364 350 0.00      
7 Au 1385 1329 47.51      
8 Au 1173 1125 414.90      
9 Au 204 196 2.57      
10 Au 81 78 2.30      
11 Bg 1411 1354 0.00      
12 Bg 1139 1093 0.00      
13 Bg 489 469 0.00      
14 Bu 3137 3010 60.09      
15 Bu 1333 1279 30.35      
16 Bu 1155 1108 243.89      
17 Bu 548 526 9.73      
18 Bu 413 396 49.19      

Unscaled Zero Point Vibrational Energy (zpe) 10193.3 cm-1
Scaled (by 0.9596) Zero Point Vibrational Energy (zpe) 9781.5 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/6-311G*
ABC
0.17115 0.10564 0.06913

See section I.F.4 to change rotational constant units
Geometric Data calculated at HSEh1PBE/6-311G*

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.243 0.719 0.000
C2 0.243 -0.719 0.000
H3 -1.334 0.783 0.000
H4 1.334 -0.783 0.000
F5 0.243 1.340 1.097
F6 0.243 1.340 -1.097
F7 -0.243 -1.340 1.097
F8 -0.243 -1.340 -1.097

Atom - Atom Distances (Å)
  C1 C2 H3 H4 F5 F6 F7 F8
C11.51741.09322.17771.35071.35072.33262.3326
C21.51742.17771.09322.33262.33261.35071.3507
H31.09322.17773.09401.99981.99982.62712.6271
H42.17771.09323.09402.62712.62711.99981.9998
F51.35072.33261.99982.62712.19332.72363.4969
F61.35072.33261.99982.62712.19333.49692.7236
F72.33261.35072.62711.99982.72363.49692.1933
F82.33261.35072.62711.99983.49692.72362.1933

picture of 1,1,2,2-tetrafluoroethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H4 112.039 C1 C2 F7 108.704
C1 C2 F8 108.704 C2 C1 H3 112.039
C2 C1 F5 108.704 C2 C1 F6 108.704
H3 C1 F5 109.379 H3 C1 F6 109.379
H4 C2 F7 109.379 H4 C2 F8 109.379
F5 C1 F6 108.569 F7 C2 F8 108.569
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HSEh1PBE/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.224      
2 C 0.224      
3 H 0.213      
4 H 0.213      
5 F -0.219      
6 F -0.219      
7 F -0.219      
8 F -0.219      


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 -28.365 -2.695 0.000
y -2.695 -34.766 0.000
z 0.000 0.000 -35.140
Traceless
 xyz
x 6.588 -2.695 0.000
y -2.695 -3.014 0.000
z 0.000 0.000 -3.574
Polar
3z2-r2-7.149
x2-y26.401
xy-2.695
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.392 -0.017 0.000
y -0.017 3.401 0.000
z 0.000 0.000 3.574


<r2> (average value of r2) Å2
<r2> 142.210
(<r2>)1/2 11.925