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

using model chemistry: B97D3/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2H 1AG
Energy calculated at B97D3/3-21G
 hartrees
Energy at 0K-473.933536
Energy at 298.15K-473.937299
HF Energy-473.933536
Nuclear repulsion energy 
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 B97D3/3-21G
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 3049 2997 0.00      
2 Ag 1440 1416 0.00      
3 Ag 1092 1073 0.00      
4 Ag 1058 1040 0.00      
5 Ag 575 565 0.00      
6 Ag 337 332 0.00      
7 Au 1363 1340 43.74      
8 Au 1134 1115 235.61      
9 Au 190 186 3.40      
10 Au 81 79 1.60      
11 Bg 1381 1358 0.00      
12 Bg 1076 1058 0.00      
13 Bg 449 442 0.00      
14 Bu 3066 3014 81.26      
15 Bu 1320 1298 19.38      
16 Bu 1082 1064 149.83      
17 Bu 495 486 9.62      
18 Bu 376 370 52.00      

Unscaled Zero Point Vibrational Energy (zpe) 9782.0 cm-1
Scaled (by 0.983) Zero Point Vibrational Energy (zpe) 9615.7 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 B97D3/3-21G
ABC
0.15864 0.10346 0.06626

See section I.F.4 to change rotational constant units
Geometric Data calculated at B97D3/3-21G

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.252 0.721 0.000
C2 0.252 -0.721 0.000
H3 -1.347 0.749 0.000
H4 1.347 -0.749 0.000
F5 0.252 1.354 1.141
F6 0.252 1.354 -1.141
F7 -0.252 -1.354 1.141
F8 -0.252 -1.354 -1.141

Atom - Atom Distances (Å)
  C1 C2 H3 H4 F5 F6 F7 F8
C11.52731.09562.17251.39871.39872.36762.3676
C21.52732.17251.09562.36762.36761.39871.3987
H31.09562.17253.08352.05572.05572.63132.6313
H42.17251.09563.08352.63132.63132.05572.0557
F51.39872.36762.05572.63132.28132.75453.5765
F61.39872.36762.05572.63132.28133.57652.7545
F72.36761.39872.63132.05572.75453.57652.2813
F82.36761.39872.63132.05573.57652.75452.2813

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 110.771 C1 C2 F7 107.948
C1 C2 F8 107.948 C2 C1 H3 110.771
C2 C1 F5 107.948 C2 C1 F6 107.948
H3 C1 F5 110.415 H3 C1 F6 110.415
H4 C2 F7 110.415 H4 C2 F8 110.415
F5 C1 F6 109.269 F7 C2 F8 109.269
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B97D3/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.301      
2 C 0.301      
3 H 0.229      
4 H 0.229      
5 F -0.265      
6 F -0.265      
7 F -0.265      
8 F -0.265      


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 -27.987 -2.512 0.000
y -2.512 -34.407 0.000
z 0.000 0.000 -34.753
Traceless
 xyz
x 6.593 -2.512 0.000
y -2.512 -3.037 0.000
z 0.000 0.000 -3.556
Polar
3z2-r2-7.112
x2-y26.420
xy-2.512
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.984 0.036 0.000
y 0.036 2.981 0.000
z 0.000 0.000 3.339


<r2> (average value of r2) Å2
<r2> 147.103
(<r2>)1/2 12.129