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

using model chemistry: BLYP/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 BLYP/6-31G**
 hartrees
Energy at 0K-476.693786
Energy at 298.15K-476.697592
HF Energy-476.693786
Nuclear repulsion energy262.466224
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 BLYP/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 2995 2972 0.00      
2 Ag 1416 1405 0.00      
3 Ag 1100 1092 0.00      
4 Ag 1078 1070 0.00      
5 Ag 593 589 0.00      
6 Ag 342 340 0.00      
7 Au 1335 1324 41.53      
8 Au 1098 1090 342.83      
9 Au 192 191 1.87      
10 Au 79 78 1.58      
11 Bg 1361 1350 0.00      
12 Bg 1066 1057 0.00      
13 Bg 462 459 0.00      
14 Bu 3005 2982 73.42      
15 Bu 1285 1275 29.37      
16 Bu 1087 1079 192.85      
17 Bu 510 506 6.75      
18 Bu 398 395 39.65      

Unscaled Zero Point Vibrational Energy (zpe) 9700.6 cm-1
Scaled (by 0.9923) Zero Point Vibrational Energy (zpe) 9625.9 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 BLYP/6-31G**
ABC
0.16427 0.10286 0.06693

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

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.247 0.728 0.000
C2 0.247 -0.728 0.000
H3 -1.350 0.786 0.000
H4 1.350 -0.786 0.000
F5 0.247 1.358 1.120
F6 0.247 1.358 -1.120
F7 -0.247 -1.358 1.120
F8 -0.247 -1.358 -1.120

Atom - Atom Distances (Å)
  C1 C2 H3 H4 F5 F6 F7 F8
C11.53701.10372.20051.37721.37722.36722.3672
C21.53702.20051.10372.36722.36721.37721.3772
H31.10372.20053.12382.03272.03272.65832.6583
H42.20051.10373.12382.65832.65832.03272.0327
F51.37722.36722.03272.65832.23972.76083.5551
F61.37722.36722.03272.65832.23973.55512.7608
F72.36721.37722.65832.03272.76083.55512.2397
F82.36721.37722.65832.03273.55512.76082.2397

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 111.833 C1 C2 F7 108.523
C1 C2 F8 108.523 C2 C1 H3 111.833
C2 C1 F5 108.523 C2 C1 F6 108.523
H3 C1 F5 109.545 H3 C1 F6 109.545
H4 C2 F7 109.545 H4 C2 F8 109.545
F5 C1 F6 108.813 F7 C2 F8 108.813
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.407      
2 C 0.407      
3 H 0.093      
4 H 0.093      
5 F -0.250      
6 F -0.250      
7 F -0.250      
8 F -0.250      


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 -28.393 -2.226 0.000
y -2.226 -33.721 0.000
z 0.000 0.000 -33.930
Traceless
 xyz
x 5.433 -2.226 0.000
y -2.226 -2.560 0.000
z 0.000 0.000 -2.873
Polar
3z2-r2-5.745
x2-y25.328
xy-2.226
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.628 -0.021 0.000
y -0.021 3.713 0.000
z 0.000 0.000 3.815


<r2> (average value of r2) Å2
<r2> 145.707
(<r2>)1/2 12.071