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

using model chemistry: B3LYPultrafine/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/cc-pVTZ
 hartrees
Energy at 0K-476.964984
Energy at 298.15K-476.968950
HF Energy-476.964984
Nuclear repulsion energy265.705604
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/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 3078 2975 0.00      
2 Ag 1457 1408 0.00      
3 Ag 1147 1109 0.00      
4 Ag 1107 1070 0.00      
5 Ag 623 602 0.00      
6 Ag 359 347 0.00      
7 Au 1350 1305 24.83      
8 Au 1133 1095 404.18      
9 Au 205 198 2.24      
10 Au 79 77 2.11      
11 Bg 1381 1335 0.00      
12 Bg 1098 1062 0.00      
13 Bg 480 464 0.00      
14 Bu 3090 2987 44.62      
15 Bu 1324 1280 23.82      
16 Bu 1128 1090 221.48      
17 Bu 540 522 8.74      
18 Bu 411 397 46.40      

Unscaled Zero Point Vibrational Energy (zpe) 9994.6 cm-1
Scaled (by 0.9667) Zero Point Vibrational Energy (zpe) 9661.8 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/cc-pVTZ
ABC
0.17005 0.10437 0.06843

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

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.245 0.722 0.000
C2 0.245 -0.722 0.000
H3 -1.334 0.786 0.000
H4 1.334 -0.786 0.000
F5 0.245 1.348 1.100
F6 0.245 1.348 -1.100
F7 -0.245 -1.348 1.100
F8 -0.245 -1.348 -1.100

Atom - Atom Distances (Å)
  C1 C2 H3 H4 F5 F6 F7 F8
C11.52531.09132.18351.35731.35732.34482.3448
C21.52532.18351.09132.34482.34481.35731.3573
H31.09132.18353.09692.00522.00522.63662.6366
H42.18351.09133.09692.63662.63662.00522.0052
F51.35732.34482.00522.63662.20022.74103.5148
F61.35732.34482.00522.63662.20023.51482.7410
F72.34481.35732.63662.00522.74103.51482.2002
F82.34481.35732.63662.00523.51482.74102.2002

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 112.061 C1 C2 F7 108.728
C1 C2 F8 108.728 C2 C1 H3 112.061
C2 C1 F5 108.728 C2 C1 F6 108.728
H3 C1 F5 109.475 H3 C1 F6 109.475
H4 C2 F7 109.475 H4 C2 F8 109.475
F5 C1 F6 108.296 F7 C2 F8 108.296
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYPultrafine/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.336      
2 C 0.336      
3 H 0.051      
4 H 0.051      
5 F -0.194      
6 F -0.194      
7 F -0.194      
8 F -0.194      


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 -28.686 -2.755 0.000
y -2.755 -34.960 0.000
z 0.000 0.000 -35.297
Traceless
 xyz
x 6.442 -2.755 0.000
y -2.755 -2.968 0.000
z 0.000 0.000 -3.474
Polar
3z2-r2-6.948
x2-y26.274
xy-2.755
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.819 0.022 0.000
y 0.022 4.026 0.000
z 0.000 0.000 4.127


<r2> (average value of r2) Å2
<r2> 143.558
(<r2>)1/2 11.982