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

using model chemistry: B97D3/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2H 1AG
Energy calculated at B97D3/6-31+G**
 hartrees
Energy at 0K-476.559945
Energy at 298.15K-476.563763
HF Energy-476.559945
Nuclear repulsion energy262.743062
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 B97D3/6-31+G**
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 3059 3006 0.00      
2 Ag 1413 1389 0.00      
3 Ag 1103 1084 0.00      
4 Ag 1069 1051 0.00      
5 Ag 594 584 0.00      
6 Ag 346 340 0.00      
7 Au 1311 1289 24.12      
8 Au 1076 1057 459.20      
9 Au 201 198 2.14      
10 Au 76 74 2.09      
11 Bg 1341 1318 0.00      
12 Bg 1040 1022 0.00      
13 Bg 459 451 0.00      
14 Bu 3069 3016 44.20      
15 Bu 1287 1265 23.86      
16 Bu 1076 1058 235.29      
17 Bu 514 505 8.08      
18 Bu 405 398 48.08      

Unscaled Zero Point Vibrational Energy (zpe) 9718.4 cm-1
Scaled (by 0.9828) Zero Point Vibrational Energy (zpe) 9551.2 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 B97D3/6-31+G**
ABC
0.16588 0.10231 0.06697

See section I.F.4 to change rotational constant units
Geometric Data calculated at B97D3/6-31+G**

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.249 0.729 0.000
C2 0.249 -0.729 0.000
H3 -1.344 0.805 0.000
H4 1.344 -0.805 0.000
F5 0.249 1.362 1.114
F6 0.249 1.362 -1.114
F7 -0.249 -1.362 1.114
F8 -0.249 -1.362 -1.114

Atom - Atom Distances (Å)
  C1 C2 H3 H4 F5 F6 F7 F8
C11.53991.09812.21141.37441.37442.36862.3686
C21.53992.21141.09812.36862.36861.37441.3744
H31.09812.21143.13382.02182.02182.67132.6713
H42.21141.09813.13382.67132.67132.02182.0218
F51.37442.36862.02182.67132.22792.76833.5534
F61.37442.36862.02182.67132.22793.55342.7683
F72.36861.37442.67132.02182.76833.55342.2279
F82.36861.37442.67132.02183.55342.76832.2279

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 112.844 C1 C2 F7 108.595
C1 C2 F8 108.595 C2 C1 H3 112.844
C2 C1 F5 108.595 C2 C1 F6 108.595
H3 C1 F5 109.208 H3 C1 F6 109.208
H4 C2 F7 109.208 H4 C2 F8 109.208
F5 C1 F6 108.290 F7 C2 F8 108.290
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B97D3/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.394      
2 C 0.394      
3 H 0.163      
4 H 0.163      
5 F -0.278      
6 F -0.278      
7 F -0.278      
8 F -0.278      


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 -28.918 -3.104 0.000
y -3.104 -35.628 0.000
z 0.000 0.000 -36.078
Traceless
 xyz
x 6.935 -3.104 0.000
y -3.104 -3.130 0.000
z 0.000 0.000 -3.805
Polar
3z2-r2-7.610
x2-y26.710
xy-3.104
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.177 0.096 0.000
y 0.096 4.498 0.000
z 0.000 0.000 4.700


<r2> (average value of r2) Å2
<r2> 146.615
(<r2>)1/2 12.108