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

using model chemistry: wB97X-D/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 wB97X-D/6-31G*
 hartrees
Energy at 0K-476.635324
Energy at 298.15K-476.639309
HF Energy-476.635324
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 wB97X-D/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 3132 2970 0.00      
2 Ag 1505 1427 0.00      
3 Ag 1181 1120 0.00      
4 Ag 1140 1081 0.00      
5 Ag 631 599 0.00      
6 Ag 362 343 0.00      
7 Au 1394 1323 66.05      
8 Au 1200 1138 354.74      
9 Au 201 191 2.08      
10 Au 81 77 2.14      
11 Bg 1424 1351 0.00      
12 Bg 1169 1109 0.00      
13 Bg 491 466 0.00      
14 Bu 3142 2980 66.42      
15 Bu 1346 1277 34.88      
16 Bu 1172 1111 220.58      
17 Bu 542 514 9.31      
18 Bu 420 398 47.05      

Unscaled Zero Point Vibrational Energy (zpe) 10266.0 cm-1
Scaled (by 0.9485) Zero Point Vibrational Energy (zpe) 9737.3 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 wB97X-D/6-31G*
ABC
0.17033 0.10553 0.06897

See section I.F.4 to change rotational constant units
Geometric Data calculated at wB97X-D/6-31G*

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.240 0.724 0.000
C2 0.240 -0.724 0.000
H3 -1.334 0.777 0.000
H4 1.334 -0.777 0.000
F5 0.240 1.342 1.102
F6 0.240 1.342 -1.102
F7 -0.240 -1.342 1.102
F8 -0.240 -1.342 -1.102

Atom - Atom Distances (Å)
  C1 C2 H3 H4 F5 F6 F7 F8
C11.52641.09522.17541.35141.35142.34212.3421
C21.52642.17541.09522.34212.34211.35141.3514
H31.09522.17543.08772.00282.00282.62732.6273
H42.17541.09523.08772.62732.62732.00282.0028
F51.35142.34212.00282.62732.20352.72723.5062
F61.35142.34212.00282.62732.20353.50622.7272
F72.34211.35142.62732.00282.72723.50622.2035
F82.34211.35142.62732.00283.50622.72722.2035

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 111.090 C1 C2 F7 108.797
C1 C2 F8 108.797 C2 C1 H3 111.090
C2 C1 F5 108.797 C2 C1 F6 108.797
H3 C1 F5 109.447 H3 C1 F6 109.447
H4 C2 F7 109.447 H4 C2 F8 109.447
F5 C1 F6 109.235 F7 C2 F8 109.235
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at wB97X-D/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.391      
2 C 0.391      
3 H 0.172      
4 H 0.172      
5 F -0.282      
6 F -0.282      
7 F -0.282      
8 F -0.282      


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 -27.976 -2.483 0.000
y -2.483 -33.857 0.000
z 0.000 0.000 -34.158
Traceless
 xyz
x 6.032 -2.483 0.000
y -2.483 -2.791 0.000
z 0.000 0.000 -3.241
Polar
3z2-r2-6.482
x2-y25.882
xy-2.483
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.434 -0.026 0.000
y -0.026 3.431 0.000
z 0.000 0.000 3.525


<r2> (average value of r2) Å2
<r2> 142.028
(<r2>)1/2 11.918