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

using model chemistry: LSDA/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 LSDA/6-31G*
 hartrees
Energy at 0K-474.532690
Energy at 298.15K-474.536571
HF Energy-474.532690
Nuclear repulsion energy267.980838
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/6-31G*
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 2990 2934 0.00      
2 Ag 1445 1418 0.00      
3 Ag 1154 1133 0.00      
4 Ag 1123 1102 0.00      
5 Ag 625 613 0.00      
6 Ag 352 346 0.00      
7 Au 1342 1317 93.88      
8 Au 1198 1176 292.39      
9 Au 185 181 1.57      
10 Au 79 78 1.73      
11 Bg 1367 1342 0.00      
12 Bg 1157 1136 0.00      
13 Bg 481 472 0.00      
14 Bu 3002 2946 65.79      
15 Bu 1281 1257 28.97      
16 Bu 1173 1151 182.60      
17 Bu 532 522 8.10      
18 Bu 390 383 38.12      

Unscaled Zero Point Vibrational Energy (zpe) 9938.3 cm-1
Scaled (by 0.9813) Zero Point Vibrational Energy (zpe) 9752.5 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/6-31G*
ABC
0.17080 0.10768 0.06997

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

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 -1.350 0.760 0.000
H4 1.350 -0.760 0.000
F5 0.242 1.326 1.097
F6 0.242 1.326 -1.097
F7 -0.242 -1.326 1.097
F8 -0.242 -1.326 -1.097

Atom - Atom Distances (Å)
  C1 C2 H3 H4 F5 F6 F7 F8
C11.50821.10902.16941.34631.34632.31682.3168
C21.50822.16941.10902.31682.31681.34631.3463
H31.10902.16943.09802.01452.01452.60452.6045
H42.16941.10903.09802.60452.60452.01452.0145
F51.34632.31682.01452.60452.19502.69583.4764
F61.34632.31682.01452.60452.19503.47642.6958
F72.31681.34632.60452.01452.69583.47642.1950
F82.31681.34632.60452.01453.47642.69582.1950

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 111.055 C1 C2 F7 108.375
C1 C2 F8 108.375 C2 C1 H3 111.055
C2 C1 F5 108.375 C2 C1 F6 108.375
H3 C1 F5 109.888 H3 C1 F6 109.888
H4 C2 F7 109.888 H4 C2 F8 109.888
F5 C1 F6 109.215 F7 C2 F8 109.215
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at LSDA/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.257      
2 C 0.257      
3 H 0.166      
4 H 0.166      
5 F -0.212      
6 F -0.212      
7 F -0.212      
8 F -0.212      


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 -28.376 -2.075 0.000
y -2.075 -33.398 0.000
z 0.000 0.000 -33.674
Traceless
 xyz
x 5.161 -2.075 0.000
y -2.075 -2.373 0.000
z 0.000 0.000 -2.787
Polar
3z2-r2-5.574
x2-y25.023
xy-2.075
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.652 -0.053 0.000
y -0.053 3.579 0.000
z 0.000 0.000 3.641


<r2> (average value of r2) Å2
<r2> 140.261
(<r2>)1/2 11.843