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

using model chemistry: B3LYPultrafine/aug-cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2H 1AG
Energy calculated at B3LYPultrafine/aug-cc-pVTZ
 hartrees
Energy at 0K-476.975719
Energy at 298.15K-476.979676
HF Energy-476.975719
Nuclear repulsion energy265.376220
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 B3LYPultrafine/aug-cc-pVTZ
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 3083 2983 0.00      
2 Ag 1452 1405 0.00      
3 Ag 1142 1105 0.00      
4 Ag 1102 1066 0.00      
5 Ag 620 600 0.00      
6 Ag 357 346 0.00      
7 Au 1343 1300 18.14      
8 Au 1119 1083 428.75      
9 Au 205 199 1.95      
10 Au 80 78 2.25      
11 Bg 1374 1329 0.00      
12 Bg 1085 1050 0.00      
13 Bg 478 462 0.00      
14 Bu 3095 2994 34.84      
15 Bu 1323 1280 22.27      
16 Bu 1119 1083 225.02      
17 Bu 537 519 8.89      
18 Bu 412 399 46.78      

Unscaled Zero Point Vibrational Energy (zpe) 9963.6 cm-1
Scaled (by 0.9675) Zero Point Vibrational Energy (zpe) 9639.7 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 B3LYPultrafine/aug-cc-pVTZ
ABC
0.16998 0.10390 0.06823

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYPultrafine/aug-cc-pVTZ

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.246 0.723 0.000
C2 0.246 -0.723 0.000
H3 -1.334 0.791 0.000
H4 1.334 -0.791 0.000
F5 0.246 1.352 1.100
F6 0.246 1.352 -1.100
F7 -0.246 -1.352 1.100
F8 -0.246 -1.352 -1.100

Atom - Atom Distances (Å)
  C1 C2 H3 H4 F5 F6 F7 F8
C11.52761.09092.18831.35881.35882.34852.3485
C21.52762.18831.09092.34852.34851.35881.3588
H31.09092.18833.10222.00532.00532.64312.6431
H42.18831.09093.10222.64312.64312.00532.0053
F51.35882.34852.00532.64312.20052.74733.5199
F61.35882.34852.00532.64312.20053.51992.7473
F72.34851.35882.64312.00532.74733.51992.2005
F82.34851.35882.64312.00533.51992.74732.2005

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 112.300 C1 C2 F7 108.762
C1 C2 F8 108.762 C2 C1 H3 112.300
C2 C1 F5 108.762 C2 C1 F6 108.762
H3 C1 F5 109.395 H3 C1 F6 109.395
H4 C2 F7 109.395 H4 C2 F8 109.395
F5 C1 F6 108.136 F7 C2 F8 108.136
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYPultrafine/aug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.514      
2 C 0.514      
3 H 0.254      
4 H 0.254      
5 F -0.384      
6 F -0.384      
7 F -0.384      
8 F -0.384      


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 -28.982 -3.028 0.000
y -3.028 -35.533 0.000
z 0.000 0.000 -36.040
Traceless
 xyz
x 6.804 -3.028 0.000
y -3.028 -3.022 0.000
z 0.000 0.000 -3.782
Polar
3z2-r2-7.565
x2-y26.551
xy-3.028
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.374 0.075 0.000
y 0.075 4.754 0.000
z 0.000 0.000 4.826


<r2> (average value of r2) Å2
<r2> 144.257
(<r2>)1/2 12.011