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

using model chemistry: wB97X-D/cc-pVDZ

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/cc-pVDZ
 hartrees
Energy at 0K-476.671032
Energy at 298.15K-476.675014
HF Energy-476.671032
Nuclear repulsion energy265.724724
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/cc-pVDZ
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 3139 2990 0.00      
2 Ag 1478 1408 0.00      
3 Ag 1165 1110 0.00      
4 Ag 1119 1066 0.00      
5 Ag 625 595 0.00      
6 Ag 360 343 0.00      
7 Au 1347 1283 37.14      
8 Au 1162 1107 445.36      
9 Au 206 196 2.34      
10 Au 77 74 2.58      
11 Bg 1378 1313 0.00      
12 Bg 1128 1075 0.00      
13 Bg 483 460 0.00      
14 Bu 3149 3000 35.91      
15 Bu 1328 1265 26.91      
16 Bu 1146 1092 245.06      
17 Bu 539 513 10.68      
18 Bu 420 400 53.24      

Unscaled Zero Point Vibrational Energy (zpe) 10124.0 cm-1
Scaled (by 0.9526) Zero Point Vibrational Energy (zpe) 9644.1 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/cc-pVDZ
ABC
0.17021 0.10437 0.06850

See section I.F.4 to change rotational constant units
Geometric Data calculated at wB97X-D/cc-pVDZ

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.242 0.727 0.000
C2 0.242 -0.727 0.000
H3 -1.336 0.793 0.000
H4 1.336 -0.793 0.000
F5 0.242 1.352 1.099
F6 0.242 1.352 -1.099
F7 -0.242 -1.352 1.099
F8 -0.242 -1.352 -1.099

Atom - Atom Distances (Å)
  C1 C2 H3 H4 F5 F6 F7 F8
C11.53321.09522.19121.35411.35412.35192.3519
C21.53322.19121.09522.35192.35191.35411.3541
H31.09522.19123.10652.00272.00272.64662.6466
H42.19121.09523.10652.64662.64662.00272.0027
F51.35412.35192.00272.64662.19892.74683.5185
F61.35412.35192.00272.64662.19893.51852.7468
F72.35191.35412.64662.00272.74683.51852.1989
F82.35191.35412.64662.00273.51852.74682.1989

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 111.869 C1 C2 F7 108.930
C1 C2 F8 108.930 C2 C1 H3 111.869
C2 C1 F5 108.930 C2 C1 F6 108.930
H3 C1 F5 109.244 H3 C1 F6 109.244
H4 C2 F7 109.244 H4 C2 F8 109.244
F5 C1 F6 108.565 F7 C2 F8 108.565
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at wB97X-D/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.424      
2 C 0.424      
3 H 0.172      
4 H 0.172      
5 F -0.298      
6 F -0.298      
7 F -0.298      
8 F -0.298      


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 -28.659 -3.211 0.000
y -3.211 -35.562 0.000
z 0.000 0.000 -36.063
Traceless
 xyz
x 7.153 -3.211 0.000
y -3.211 -3.201 0.000
z 0.000 0.000 -3.952
Polar
3z2-r2-7.905
x2-y26.903
xy-3.211
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.946 0.085 0.000
y 0.085 4.154 0.000
z 0.000 0.000 4.333


<r2> (average value of r2) Å2
<r2> 143.783
(<r2>)1/2 11.991