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

using model chemistry: HF/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 HF/6-311G*
 hartrees
Energy at 0K-474.776902
Energy at 298.15K-474.781180
HF Energy-474.776902
Nuclear repulsion energy270.112786
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 HF/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 3327 3009 0.00      
2 Ag 1653 1495 0.00      
3 Ag 1283 1160 0.00      
4 Ag 1218 1102 0.00      
5 Ag 686 620 0.00      
6 Ag 394 356 0.00      
7 Au 1520 1374 73.30      
8 Au 1288 1165 474.15      
9 Au 225 203 3.54      
10 Au 94 85 3.29      
11 Bg 1548 1400 0.00      
12 Bg 1261 1140 0.00      
13 Bg 533 482 0.00      
14 Bu 3338 3019 67.84      
15 Bu 1461 1321 53.61      
16 Bu 1249 1130 317.48      
17 Bu 597 540 14.15      
18 Bu 455 412 65.35      

Unscaled Zero Point Vibrational Energy (zpe) 11064.8 cm-1
Scaled (by 0.9044) Zero Point Vibrational Energy (zpe) 10007.0 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 HF/6-311G*
ABC
0.17666 0.10728 0.07065

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

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.241 0.716 0.000
C2 0.241 -0.716 0.000
H3 -1.318 0.783 0.000
H4 1.318 -0.783 0.000
F5 0.241 1.329 1.079
F6 0.241 1.329 -1.079
F7 -0.241 -1.329 1.079
F8 -0.241 -1.329 -1.079

Atom - Atom Distances (Å)
  C1 C2 H3 H4 F5 F6 F7 F8
C11.51161.07862.16291.33121.33122.31262.3126
C21.51162.16291.07862.31262.31261.33121.3312
H31.07862.16293.06561.97281.97282.60472.6047
H42.16291.07863.06562.60472.60471.97281.9728
F51.33122.31261.97282.60472.15762.70193.4577
F61.33122.31261.97282.60472.15763.45772.7019
F72.31261.33122.60471.97282.70193.45772.1576
F82.31261.33122.60471.97283.45772.70192.1576

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 112.153 C1 C2 F7 108.712
C1 C2 F8 108.712 C2 C1 H3 112.153
C2 C1 F5 108.712 C2 C1 F6 108.712
H3 C1 F5 109.455 H3 C1 F6 109.455
H4 C2 F7 109.455 H4 C2 F8 109.455
F5 C1 F6 108.271 F7 C2 F8 108.271
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.390      
2 C 0.390      
3 H 0.210      
4 H 0.210      
5 F -0.300      
6 F -0.300      
7 F -0.300      
8 F -0.300      


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 -28.082 -3.164 0.000
y -3.164 -35.344 0.000
z 0.000 0.000 -35.857
Traceless
 xyz
x 7.518 -3.164 0.000
y -3.164 -3.375 0.000
z 0.000 0.000 -4.144
Polar
3z2-r2-8.287
x2-y27.262
xy-3.164
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.055 0.004 0.000
y 0.004 2.997 0.000
z 0.000 0.000 3.173


<r2> (average value of r2) Å2
<r2> 139.824
(<r2>)1/2 11.825