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

using model chemistry: B1B95/6-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2H 1AG
Energy calculated at B1B95/6-31G
 hartrees
Energy at 0K-476.532862
Energy at 298.15K-476.536708
HF Energy-476.532862
Nuclear repulsion energy262.259283
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 B1B95/6-31G
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 Ag 3200 3052 0.00      
2 Ag 1478 1410 0.00      
3 Ag 1187 1132 0.00      
4 Ag 1087 1037 0.00      
5 Ag 595 568 0.00      
6 Ag 341 326 0.00      
7 Au 1374 1310 28.20      
8 Au 1155 1102 290.04      
9 Au 186 178 3.73      
10 Au 83 79 3.49      
11 Bg 1402 1337 0.00      
12 Bg 1110 1058 0.00      
13 Bg 474 452 0.00      
14 Bu 3213 3064 23.78      
15 Bu 1332 1270 20.93      
16 Bu 1111 1060 172.68      
17 Bu 500 477 16.10      
18 Bu 400 382 68.65      

Unscaled Zero Point Vibrational Energy (zpe) 10114.3 cm-1
Scaled (by 0.9537) Zero Point Vibrational Energy (zpe) 9646.0 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 B1B95/6-31G
ABC
0.16165 0.10442 0.06716

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/6-31G

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.253 0.709 0.000
C2 0.253 -0.709 0.000
H3 -1.337 0.776 0.000
H4 1.337 -0.776 0.000
F5 0.253 1.348 1.129
F6 0.253 1.348 -1.129
F7 -0.253 -1.348 1.129
F8 -0.253 -1.348 -1.129

Atom - Atom Distances (Å)
  C1 C2 H3 H4 F5 F6 F7 F8
C11.50621.08622.17581.39281.39282.34712.3471
C21.50622.17581.08622.34712.34711.39281.3928
H31.08622.17583.09182.03282.03282.63862.6386
H42.17581.08623.09182.63862.63862.03282.0328
F51.39282.34712.03282.63862.25872.74373.5538
F61.39282.34712.03282.63862.25873.55382.7437
F72.34711.39282.63862.03282.74373.55382.2587
F82.34711.39282.63862.03283.55382.74372.2587

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 113.143 C1 C2 F7 108.057
C1 C2 F8 108.057 C2 C1 H3 113.143
C2 C1 F5 108.057 C2 C1 F6 108.057
H3 C1 F5 109.553 H3 C1 F6 109.553
H4 C2 F7 109.553 H4 C2 F8 109.553
F5 C1 F6 108.354 F7 C2 F8 108.354
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.392      
2 C 0.392      
3 H 0.213      
4 H 0.213      
5 F -0.303      
6 F -0.303      
7 F -0.303      
8 F -0.303      


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 -27.972 -3.387 0.000
y -3.387 -35.896 0.000
z 0.000 0.000 -36.478
Traceless
 xyz
x 8.215 -3.387 0.000
y -3.387 -3.671 0.000
z 0.000 0.000 -4.544
Polar
3z2-r2-9.088
x2-y27.924
xy-3.387
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.947 0.091 0.000
y 0.091 3.024 0.000
z 0.000 0.000 3.522


<r2> (average value of r2) Å2
<r2> 146.143
(<r2>)1/2 12.089