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

using model chemistry: HF/aug-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 HF/aug-cc-pVDZ
 hartrees
Energy at 0K-474.712799
Energy at 298.15K-474.717044
HF Energy-474.712799
Nuclear repulsion energy268.734730
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 HF/aug-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 3301 3006 0.00      
2 Ag 1619 1474 0.00      
3 Ag 1267 1154 0.00      
4 Ag 1198 1091 0.00      
5 Ag 672 612 0.00      
6 Ag 387 353 0.00      
7 Au 1466 1335 42.66      
8 Au 1257 1145 459.51      
9 Au 222 202 2.50      
10 Au 95 87 3.10      
11 Bg 1497 1363 0.00      
12 Bg 1225 1116 0.00      
13 Bg 525 478 0.00      
14 Bu 3311 3015 40.39      
15 Bu 1427 1300 36.30      
16 Bu 1224 1115 282.41      
17 Bu 580 528 12.43      
18 Bu 447 407 60.33      

Unscaled Zero Point Vibrational Energy (zpe) 10860.8 cm-1
Scaled (by 0.9106) Zero Point Vibrational Energy (zpe) 9889.8 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 HF/aug-cc-pVDZ
ABC
0.17527 0.10606 0.06997

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

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.244 0.717 0.000
C2 0.244 -0.717 0.000
H3 -1.327 0.785 0.000
H4 1.327 -0.785 0.000
F5 0.244 1.337 1.083
F6 0.244 1.337 -1.083
F7 -0.244 -1.337 1.083
F8 -0.244 -1.337 -1.083

Atom - Atom Distances (Å)
  C1 C2 H3 H4 F5 F6 F7 F8
C11.51561.08542.17411.33951.33952.32222.3222
C21.51562.17411.08542.32222.32221.33951.3395
H31.08542.17413.08431.98641.98642.61702.6170
H42.17411.08543.08432.61702.61701.98641.9864
F51.33952.32221.98642.61702.16542.71813.4752
F61.33952.32221.98642.61702.16543.47522.7181
F72.32221.33952.61701.98642.71813.47522.1654
F82.32221.33952.61701.98643.47522.71812.1654

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 112.358 C1 C2 F7 108.697
C1 C2 F8 108.697 C2 C1 H3 112.358
C2 C1 F5 108.697 C2 C1 F6 108.697
H3 C1 F5 109.560 H3 C1 F6 109.560
H4 C2 F7 109.560 H4 C2 F8 109.560
F5 C1 F6 107.858 F7 C2 F8 107.858
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 1.340      
2 C 1.340      
3 H -0.170      
4 H -0.170      
5 F -0.585      
6 F -0.585      
7 F -0.585      
8 F -0.585      


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 -28.392 -3.306 0.000
y -3.306 -35.567 0.000
z 0.000 0.000 -36.108
Traceless
 xyz
x 7.445 -3.306 0.000
y -3.306 -3.316 0.000
z 0.000 0.000 -4.129
Polar
3z2-r2-8.257
x2-y27.174
xy-3.306
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.790 0.059 0.000
y 0.059 4.036 0.000
z 0.000 0.000 4.109


<r2> (average value of r2) Å2
<r2> 141.172
(<r2>)1/2 11.882