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

using model chemistry: LSDA/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 LSDA/6-311G*
 hartrees
Energy at 0K-474.686342
Energy at 298.15K-474.690246
HF Energy-474.686342
Nuclear repulsion energy267.963908
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/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 2993 2944 0.00      
2 Ag 1428 1405 0.00      
3 Ag 1142 1124 0.00      
4 Ag 1108 1090 0.00      
5 Ag 625 615 0.00      
6 Ag 356 351 0.00      
7 Au 1319 1297 53.62      
8 Au 1159 1141 382.89      
9 Au 193 190 2.19      
10 Au 78 77 2.11      
11 Bg 1345 1323 0.00      
12 Bg 1116 1098 0.00      
13 Bg 479 471 0.00      
14 Bu 3006 2957 53.37      
15 Bu 1271 1250 20.75      
16 Bu 1148 1129 216.43      
17 Bu 538 529 8.92      
18 Bu 393 386 44.09      

Unscaled Zero Point Vibrational Energy (zpe) 9848.4 cm-1
Scaled (by 0.9837) Zero Point Vibrational Energy (zpe) 9687.8 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 LSDA/6-311G*
ABC
0.17152 0.10722 0.06989

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

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.242 0.713 0.000
C2 0.242 -0.713 0.000
H3 -1.347 0.769 0.000
H4 1.347 -0.769 0.000
F5 0.242 1.329 1.095
F6 0.242 1.329 -1.095
F7 -0.242 -1.329 1.095
F8 -0.242 -1.329 -1.095

Atom - Atom Distances (Å)
  C1 C2 H3 H4 F5 F6 F7 F8
C11.50611.10622.17281.34661.34662.31762.3176
C21.50612.17281.10622.31762.31761.34661.3466
H31.10622.17283.10192.00922.00922.61232.6123
H42.17281.10623.10192.61232.61232.00922.0092
F51.34662.31762.00922.61232.19022.70263.4786
F61.34662.31762.00922.61232.19023.47862.7026
F72.31761.34662.61232.00922.70263.47862.1902
F82.31761.34662.61232.00923.47862.70262.1902

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 111.650 C1 C2 F7 108.541
C1 C2 F8 108.541 C2 C1 H3 111.650
C2 C1 F5 108.541 C2 C1 F6 108.541
H3 C1 F5 109.612 H3 C1 F6 109.612
H4 C2 F7 109.612 H4 C2 F8 109.612
F5 C1 F6 108.829 F7 C2 F8 108.829
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at LSDA/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.120      
2 C 0.120      
3 H 0.228      
4 H 0.228      
5 F -0.174      
6 F -0.174      
7 F -0.174      
8 F -0.174      


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 -28.711 -2.464 0.000
y -2.464 -34.652 0.000
z 0.000 0.000 -35.036
Traceless
 xyz
x 6.133 -2.464 0.000
y -2.464 -2.778 0.000
z 0.000 0.000 -3.355
Polar
3z2-r2-6.709
x2-y25.941
xy-2.464
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.635 -0.060 0.000
y -0.060 3.577 0.000
z 0.000 0.000 3.707


<r2> (average value of r2) Å2
<r2> 141.010
(<r2>)1/2 11.875