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

using model chemistry: BLYP/STO-3G

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/STO-3G
 hartrees
Energy at 0K-469.850023
Energy at 298.15K-469.853037
HF Energy-469.850023
Nuclear repulsion energy250.125534
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/STO-3G
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 2979 2756 0.00      
2 Ag 1377 1274 0.00      
3 Ag 1091 1009 0.00      
4 Ag 894 827 0.00      
5 Ag 552 511 0.00      
6 Ag 285 264 0.00      
7 Au 1352 1251 60.97      
8 Au 1150 1064 97.09      
9 Au 140 130 0.27      
10 Au 7 6 0.54      
11 Bg 1399 1294 0.00      
12 Bg 1143 1057 0.00      
13 Bg 402 372 0.00      
14 Bu 2990 2766 86.46      
15 Bu 1265 1170 58.71      
16 Bu 1104 1021 73.02      
17 Bu 476 441 5.70      
18 Bu 355 329 10.69      

Unscaled Zero Point Vibrational Energy (zpe) 9480.4 cm-1
Scaled (by 0.9252) Zero Point Vibrational Energy (zpe) 8771.3 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/STO-3G
ABC
0.15426 0.08950 0.05972

See section I.F.4 to change rotational constant units
Geometric Data calculated at BLYP/STO-3G

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.249 0.806 0.000
C2 0.249 -0.806 0.000
H3 -1.394 0.827 0.000
H4 1.394 -0.827 0.000
F5 0.249 1.457 1.156
F6 0.249 1.457 -1.156
F7 -0.249 -1.457 1.156
F8 -0.249 -1.457 -1.156

Atom - Atom Distances (Å)
  C1 C2 H3 H4 F5 F6 F7 F8
C11.68811.14492.31731.41731.41732.54122.5412
C21.68812.31731.14492.54122.54121.41731.4173
H31.14492.31733.24212.10582.10582.80412.8041
H42.31731.14493.24212.80412.80412.10582.1058
F51.41732.54122.10582.80412.31252.95563.7527
F61.41732.54122.10582.80412.31253.75272.9556
F72.54121.41732.80412.10582.95563.75272.3125
F82.54121.41732.80412.10583.75272.95562.3125

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 108.234 C1 C2 F7 109.529
C1 C2 F8 109.529 C2 C1 H3 108.234
C2 C1 F5 109.529 C2 C1 F6 109.529
H3 C1 F5 110.096 H3 C1 F6 110.096
H4 C2 F7 110.096 H4 C2 F8 110.096
F5 C1 F6 109.340 F7 C2 F8 109.340
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.090      
2 C 0.090      
3 H 0.060      
4 H 0.060      
5 F -0.075      
6 F -0.075      
7 F -0.075      
8 F -0.075      


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 -26.146 -1.149 0.000
y -1.149 -29.058 0.000
z 0.000 0.000 -29.374
Traceless
 xyz
x 3.070 -1.149 0.000
y -1.149 -1.298 0.000
z 0.000 0.000 -1.772
Polar
3z2-r2-3.544
x2-y22.912
xy-1.149
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.961 0.111 0.000
y 0.111 2.614 0.000
z 0.000 0.000 2.645


<r2> (average value of r2) Å2
<r2> 158.161
(<r2>)1/2 12.576