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

using model chemistry: B3LYP/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2H 1AG
Energy calculated at B3LYP/6-31G*
 hartrees
Energy at 0K-476.760482
Energy at 298.15K-476.764423
HF Energy-476.760482
Nuclear repulsion energy265.472516
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 B3LYP/6-31G*
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 3106 2983 0.00      
2 Ag 1487 1428 0.00      
3 Ag 1163 1116 0.00      
4 Ag 1125 1081 0.00      
5 Ag 622 597 0.00      
6 Ag 357 342 0.00      
7 Au 1392 1337 57.08      
8 Au 1171 1124 350.36      
9 Au 199 191 2.10      
10 Au 83 79 1.97      
11 Bg 1420 1363 0.00      
12 Bg 1139 1094 0.00      
13 Bg 484 465 0.00      
14 Bu 3117 2994 66.53      
15 Bu 1337 1284 35.29      
16 Bu 1147 1102 209.50      
17 Bu 533 512 8.68      
18 Bu 414 398 44.63      

Unscaled Zero Point Vibrational Energy (zpe) 10147.5 cm-1
Scaled (by 0.9603) Zero Point Vibrational Energy (zpe) 9744.7 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 B3LYP/6-31G*
ABC
0.16845 0.10499 0.06845

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-31G*

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 -1.338 0.780 0.000
H4 1.338 -0.780 0.000
F5 0.245 1.344 1.106
F6 0.245 1.344 -1.106
F7 -0.245 -1.344 1.106
F8 -0.245 -1.344 -1.106

Atom - Atom Distances (Å)
  C1 C2 H3 H4 F5 F6 F7 F8
C11.52391.09492.18161.35981.35982.34282.3428
C21.52392.18161.09492.34282.34281.35981.3598
H31.09492.18163.09742.01122.01122.63232.6323
H42.18161.09493.09742.63232.63232.01122.0112
F51.35982.34282.01122.63232.21132.73203.5148
F61.35982.34282.01122.63232.21133.51482.7320
F72.34281.35982.63232.01122.73203.51482.2113
F82.34281.35982.63232.01123.51482.73202.2113

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 111.786 C1 C2 F7 108.536
C1 C2 F8 108.536 C2 C1 H3 111.786
C2 C1 F5 108.536 C2 C1 F6 108.536
H3 C1 F5 109.564 H3 C1 F6 109.564
H4 C2 F7 109.564 H4 C2 F8 109.564
F5 C1 F6 108.798 F7 C2 F8 108.798
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.399      
2 C 0.399      
3 H 0.148      
4 H 0.148      
5 F -0.274      
6 F -0.274      
7 F -0.274      
8 F -0.274      


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 -28.182 -2.387 0.000
y -2.387 -33.853 0.000
z 0.000 0.000 -34.129
Traceless
 xyz
x 5.809 -2.387 0.000
y -2.387 -2.697 0.000
z 0.000 0.000 -3.112
Polar
3z2-r2-6.224
x2-y25.671
xy-2.387
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.460 -0.019 0.000
y -0.019 3.483 0.000
z 0.000 0.000 3.589


<r2> (average value of r2) Å2
<r2> 142.968
(<r2>)1/2 11.957