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

using model chemistry: B3LYP/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 B3LYP/6-311G**
 hartrees
Energy at 0K-476.912448
Energy at 298.15K-476.916403
HF Energy-476.912448
Nuclear repulsion energy265.338063
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 B3LYP/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 3093 2991 0.00      
2 Ag 1460 1412 0.00      
3 Ag 1147 1109 0.00      
4 Ag 1107 1071 0.00      
5 Ag 620 599 0.00      
6 Ag 358 347 0.00      
7 Au 1363 1318 34.96      
8 Au 1131 1094 411.19      
9 Au 204 198 2.65      
10 Au 78 76 2.32      
11 Bg 1390 1344 0.00      
12 Bg 1099 1063 0.00      
13 Bg 480 464 0.00      
14 Bu 3105 3001 49.92      
15 Bu 1318 1274 27.95      
16 Bu 1123 1086 236.90      
17 Bu 538 520 9.26      
18 Bu 411 397 50.72      

Unscaled Zero Point Vibrational Energy (zpe) 10012.7 cm-1
Scaled (by 0.9668) Zero Point Vibrational Energy (zpe) 9680.2 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 B3LYP/6-311G**
ABC
0.16920 0.10433 0.06829

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-311G**

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.245 0.722 0.000
C2 0.245 -0.722 0.000
H3 -1.336 0.785 0.000
H4 1.336 -0.785 0.000
F5 0.245 1.349 1.103
F6 0.245 1.349 -1.103
F7 -0.245 -1.349 1.103
F8 -0.245 -1.349 -1.103

Atom - Atom Distances (Å)
  C1 C2 H3 H4 F5 F6 F7 F8
C11.52451.09242.18451.36031.36032.34582.3458
C21.52452.18451.09242.34582.34581.36031.3603
H31.09242.18453.09942.00862.00862.63822.6382
H42.18451.09243.09942.63822.63822.00862.0086
F51.36032.34582.00862.63822.20592.74163.5188
F61.36032.34582.00862.63822.20593.51882.7416
F72.34581.36032.63822.00862.74163.51882.2059
F82.34581.36032.63822.00863.51882.74162.2059

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 112.131 C1 C2 F7 108.673
C1 C2 F8 108.673 C2 C1 H3 112.131
C2 C1 F5 108.673 C2 C1 F6 108.673
H3 C1 F5 109.469 H3 C1 F6 109.469
H4 C2 F7 109.469 H4 C2 F8 109.469
F5 C1 F6 108.347 F7 C2 F8 108.347
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-311G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.336      
2 C 0.336      
3 H 0.114      
4 H 0.114      
5 F -0.225      
6 F -0.225      
7 F -0.225      
8 F -0.225      


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 -28.471 -2.755 0.000
y -2.755 -35.022 0.000
z 0.000 0.000 -35.331
Traceless
 xyz
x 6.706 -2.755 0.000
y -2.755 -3.121 0.000
z 0.000 0.000 -3.585
Polar
3z2-r2-7.170
x2-y26.551
xy-2.755
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.434 -0.019 0.000
y -0.019 3.497 0.000
z 0.000 0.000 3.658


<r2> (average value of r2) Å2
<r2> 143.790
(<r2>)1/2 11.991