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

using model chemistry: B3LYP/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2H 1AG
Energy calculated at B3LYP/6-31+G**
 hartrees
Energy at 0K-476.804886
Energy at 298.15K-476.808804
HF Energy-476.804886
Nuclear repulsion energy264.410136
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 B3LYP/6-31+G**
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 3120 3008 0.00      
2 Ag 1456 1404 0.00      
3 Ag 1144 1103 0.00      
4 Ag 1102 1062 0.00      
5 Ag 613 591 0.00      
6 Ag 354 342 0.00      
7 Au 1346 1298 28.77      
8 Au 1124 1084 446.80      
9 Au 204 197 2.35      
10 Au 80 77 2.54      
11 Bg 1376 1326 0.00      
12 Bg 1090 1051 0.00      
13 Bg 475 458 0.00      
14 Bu 3130 3018 32.85      
15 Bu 1316 1269 25.94      
16 Bu 1117 1077 237.33      
17 Bu 528 509 10.01      
18 Bu 414 399 52.24      

Unscaled Zero Point Vibrational Energy (zpe) 9994.4 cm-1
Scaled (by 0.9642) Zero Point Vibrational Energy (zpe) 9636.6 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 B3LYP/6-31+G**
ABC
0.16816 0.10357 0.06784

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-31+G**

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.248 0.724 0.000
C2 0.248 -0.724 0.000
H3 -1.339 0.797 0.000
H4 1.339 -0.797 0.000
F5 0.248 1.353 1.106
F6 0.248 1.353 -1.106
F7 -0.248 -1.353 1.106
F8 -0.248 -1.353 -1.106

Atom - Atom Distances (Å)
  C1 C2 H3 H4 F5 F6 F7 F8
C11.52961.09372.19811.36601.36602.35302.3530
C21.52962.19811.09372.35302.35301.36601.3660
H31.09372.19813.11702.01272.01272.65322.6532
H42.19811.09373.11702.65322.65322.01272.0127
F51.36602.35302.01272.65322.21222.75153.5306
F61.36602.35302.01272.65322.21223.53062.7515
F72.35301.36602.65322.01272.75153.53062.2122
F82.35301.36602.65322.01273.53062.75152.2122

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 112.786 C1 C2 F7 108.572
C1 C2 F8 108.572 C2 C1 H3 112.786
C2 C1 F5 108.572 C2 C1 F6 108.572
H3 C1 F5 109.327 H3 C1 F6 109.327
H4 C2 F7 109.327 H4 C2 F8 109.327
F5 C1 F6 108.147 F7 C2 F8 108.147
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.448      
2 C 0.448      
3 H 0.156      
4 H 0.156      
5 F -0.302      
6 F -0.302      
7 F -0.302      
8 F -0.302      


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 -28.974 -3.234 0.000
y -3.234 -35.918 0.000
z 0.000 0.000 -36.426
Traceless
 xyz
x 7.198 -3.234 0.000
y -3.234 -3.218 0.000
z 0.000 0.000 -3.980
Polar
3z2-r2-7.961
x2-y26.944
xy-3.234
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.034 0.098 0.000
y 0.098 4.286 0.000
z 0.000 0.000 4.492


<r2> (average value of r2) Å2
<r2> 145.155
(<r2>)1/2 12.048