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

using model chemistry: M06-2X/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 M06-2X/3-21G*
 hartrees
Energy at 0K-473.989124
Energy at 298.15K-473.993085
HF Energy-473.989124
Nuclear repulsion energy263.770136
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 M06-2X/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 3154 2988 0.00      
2 Ag 1516 1436 0.00      
3 Ag 1182 1120 0.00      
4 Ag 1125 1065 0.00      
5 Ag 611 578 0.00      
6 Ag 349 330 0.00      
7 Au 1434 1358 64.16      
8 Au 1247 1181 199.27      
9 Au 190 180 3.64      
10 Au 107 101 2.73      
11 Bg 1452 1375 0.00      
12 Bg 1201 1138 0.00      
13 Bg 482 457 0.00      
14 Bu 3170 3003 32.31      
15 Bu 1366 1294 25.20      
16 Bu 1174 1112 154.27      
17 Bu 521 494 15.05      
18 Bu 389 369 63.06      

Unscaled Zero Point Vibrational Energy (zpe) 10334.0 cm-1
Scaled (by 0.9472) Zero Point Vibrational Energy (zpe) 9788.3 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 M06-2X/3-21G*
ABC
0.16284 0.10602 0.06800

See section I.F.4 to change rotational constant units
Geometric Data calculated at M06-2X/3-21G*

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.251 0.712 0.000
C2 0.251 -0.712 0.000
H3 -1.338 0.741 0.000
H4 1.338 -0.741 0.000
F5 0.251 1.337 1.125
F6 0.251 1.337 -1.125
F7 -0.251 -1.337 1.125
F8 -0.251 -1.337 -1.125

Atom - Atom Distances (Å)
  C1 C2 H3 H4 F5 F6 F7 F8
C11.50951.08732.15361.38181.38182.33722.3372
C21.50952.15361.08732.33722.33721.38181.3818
H31.08732.15363.05972.03642.03642.60122.6012
H42.15361.08733.05972.60122.60122.03642.0364
F51.38182.33722.03642.60122.25032.72063.5307
F61.38182.33722.03642.60122.25033.53072.7206
F72.33721.38182.60122.03642.72063.53072.2503
F82.33721.38182.60122.03643.53072.72062.2503

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 111.015 C1 C2 F7 107.789
C1 C2 F8 107.789 C2 C1 H3 111.015
C2 C1 F5 107.789 C2 C1 F6 107.789
H3 C1 F5 110.561 H3 C1 F6 110.561
H4 C2 F7 110.561 H4 C2 F8 110.561
F5 C1 F6 109.028 F7 C2 F8 109.028
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at M06-2X/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.358      
2 C 0.358      
3 H 0.241      
4 H 0.241      
5 F -0.299      
6 F -0.299      
7 F -0.299      
8 F -0.299      


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 -27.993 -2.883 0.000
y -2.883 -35.158 0.000
z 0.000 0.000 -35.638
Traceless
 xyz
x 7.405 -2.883 0.000
y -2.883 -3.343 0.000
z 0.000 0.000 -4.062
Polar
3z2-r2-8.124
x2-y27.165
xy-2.883
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.774 0.039 0.000
y 0.039 2.640 0.000
z 0.000 0.000 3.048


<r2> (average value of r2) Å2
<r2> 144.273
(<r2>)1/2 12.011