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

using model chemistry: BLYP/6-311G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2H 1AG
Energy calculated at BLYP/6-311G**
 hartrees
Energy at 0K-476.853109
Energy at 298.15K-476.856902
HF Energy-476.853109
Nuclear repulsion energy262.076327
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 BLYP/6-311G**
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 3004 2992 0.00      
2 Ag 1394 1389 0.00      
3 Ag 1085 1080 0.00      
4 Ag 1058 1054 0.00      
5 Ag 589 587 0.00      
6 Ag 343 342 0.00      
7 Au 1312 1307 25.48      
8 Au 1052 1048 398.11      
9 Au 198 197 2.43      
10 Au 74 74 1.94      
11 Bg 1338 1333 0.00      
12 Bg 1018 1014 0.00      
13 Bg 456 454 0.00      
14 Bu 3014 3003 55.52      
15 Bu 1271 1267 22.97      
16 Bu 1059 1055 218.00      
17 Bu 512 510 7.23      
18 Bu 397 395 46.54      

Unscaled Zero Point Vibrational Energy (zpe) 9586.3 cm-1
Scaled (by 0.9961) Zero Point Vibrational Energy (zpe) 9548.9 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 BLYP/6-311G**
ABC
0.16467 0.10201 0.06664

See section I.F.4 to change rotational constant units
Geometric Data calculated at BLYP/6-311G**

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.249 0.728 0.000
C2 0.249 -0.728 0.000
H3 -1.346 0.795 0.000
H4 1.346 -0.795 0.000
F5 0.249 1.364 1.118
F6 0.249 1.364 -1.118
F7 -0.249 -1.364 1.118
F8 -0.249 -1.364 -1.118

Atom - Atom Distances (Å)
  C1 C2 H3 H4 F5 F6 F7 F8
C11.53781.09952.20481.37961.37962.37202.3720
C21.53782.20481.09952.37202.37201.37961.3796
H31.09952.20483.12652.02942.02942.66772.6677
H42.20481.09953.12652.66772.66772.02942.0294
F51.37962.37202.02942.66772.23672.77353.5630
F61.37962.37202.02942.66772.23673.56302.7735
F72.37201.37962.66772.02942.77353.56302.2367
F82.37201.37962.66772.02943.56302.77352.2367

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 112.374 C1 C2 F7 108.669
C1 C2 F8 108.669 C2 C1 H3 112.374
C2 C1 F5 108.669 C2 C1 F6 108.669
H3 C1 F5 109.365 H3 C1 F6 109.365
H4 C2 F7 109.365 H4 C2 F8 109.365
F5 C1 F6 108.312 F7 C2 F8 108.312
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/6-311G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.304      
2 C 0.304      
3 H 0.110      
4 H 0.110      
5 F -0.207      
6 F -0.207      
7 F -0.207      
8 F -0.207      


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 -28.749 -2.621 0.000
y -2.621 -35.061 0.000
z 0.000 0.000 -35.284
Traceless
 xyz
x 6.424 -2.621 0.000
y -2.621 -3.044 0.000
z 0.000 0.000 -3.380
Polar
3z2-r2-6.760
x2-y26.312
xy-2.621
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.614 -0.030 0.000
y -0.030 3.743 0.000
z 0.000 0.000 3.896


<r2> (average value of r2) Å2
<r2> 146.867
(<r2>)1/2 12.119