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

using model chemistry: LSDA/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 LSDA/cc-pVTZ
 hartrees
Energy at 0K-474.747851
Energy at 298.15K-474.751758
HF Energy-474.747851
Nuclear repulsion energy268.226030
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 LSDA/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 2966 2934 0.00      
2 Ag 1409 1394 0.00      
3 Ag 1138 1126 0.00      
4 Ag 1101 1089 0.00      
5 Ag 624 617 0.00      
6 Ag 356 352 0.00      
7 Au 1282 1268 44.88      
8 Au 1161 1149 368.38      
9 Au 194 192 1.84      
10 Au 77 76 1.90      
11 Bg 1313 1298 0.00      
12 Bg 1115 1103 0.00      
13 Bg 478 473 0.00      
14 Bu 2980 2947 41.64      
15 Bu 1260 1247 16.24      
16 Bu 1152 1139 199.33      
17 Bu 536 531 8.69      
18 Bu 387 383 40.37      

Unscaled Zero Point Vibrational Energy (zpe) 9764.4 cm-1
Scaled (by 0.9891) Zero Point Vibrational Energy (zpe) 9658.0 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 LSDA/cc-pVTZ
ABC
0.17233 0.10715 0.07000

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

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.242 0.714 0.000
C2 0.242 -0.714 0.000
H3 -1.347 0.766 0.000
H4 1.347 -0.766 0.000
F5 0.242 1.330 1.092
F6 0.242 1.330 -1.092
F7 -0.242 -1.330 1.092
F8 -0.242 -1.330 -1.092

Atom - Atom Distances (Å)
  C1 C2 H3 H4 F5 F6 F7 F8
C11.50751.10622.17131.34431.34432.31732.3173
C21.50752.17131.10622.31732.31731.34431.3443
H31.10622.17133.09902.00932.00932.60872.6087
H42.17131.10623.09902.60872.60872.00932.0093
F51.34432.31732.00932.60872.18462.70353.4758
F61.34432.31732.00932.60872.18463.47582.7035
F72.31731.34432.60872.00932.70353.47582.1846
F82.31731.34432.60872.00933.47582.70352.1846

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 111.425 C1 C2 F7 108.556
C1 C2 F8 108.556 C2 C1 H3 111.425
C2 C1 F5 108.556 C2 C1 F6 108.556
H3 C1 F5 109.780 H3 C1 F6 109.780
H4 C2 F7 109.780 H4 C2 F8 109.780
F5 C1 F6 108.686 F7 C2 F8 108.686
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at LSDA/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.218      
2 C 0.218      
3 H 0.059      
4 H 0.059      
5 F -0.138      
6 F -0.138      
7 F -0.138      
8 F -0.138      


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 -28.903 -2.491 0.000
y -2.491 -34.583 0.000
z 0.000 0.000 -34.964
Traceless
 xyz
x 5.871 -2.491 0.000
y -2.491 -2.650 0.000
z 0.000 0.000 -3.221
Polar
3z2-r2-6.442
x2-y25.680
xy-2.491
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.053 -0.012 0.000
y -0.012 4.158 0.000
z 0.000 0.000 4.223


<r2> (average value of r2) Å2
<r2> 140.846
(<r2>)1/2 11.868