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

using model chemistry: wB97X-D/TZVP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2H 1AG
Energy calculated at wB97X-D/TZVP
 hartrees
Energy at 0K-476.838600
Energy at 298.15K-476.842618
HF Energy-476.838600
Nuclear repulsion energy266.388763
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 wB97X-D/TZVP
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 3108 2968 0.00      
2 Ag 1476 1410 0.00      
3 Ag 1164 1112 0.00      
4 Ag 1117 1067 0.00      
5 Ag 635 607 0.00      
6 Ag 366 349 0.00      
7 Au 1364 1302 32.51      
8 Au 1159 1106 446.48      
9 Au 212 202 2.91      
10 Au 76 73 2.48      
11 Bg 1396 1333 0.00      
12 Bg 1127 1077 0.00      
13 Bg 487 466 0.00      
14 Bu 3119 2978 43.60      
15 Bu 1336 1276 27.79      
16 Bu 1149 1097 249.40      
17 Bu 553 528 9.91      
18 Bu 421 402 53.21      

Unscaled Zero Point Vibrational Energy (zpe) 10131.8 cm-1
Scaled (by 0.955) Zero Point Vibrational Energy (zpe) 9675.9 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 wB97X-D/TZVP
ABC
0.17155 0.10448 0.06871

See section I.F.4 to change rotational constant units
Geometric Data calculated at wB97X-D/TZVP

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.239 0.728 0.000
C2 0.239 -0.728 0.000
H3 -1.331 0.790 0.000
H4 1.331 -0.790 0.000
F5 0.239 1.352 1.096
F6 0.239 1.352 -1.096
F7 -0.239 -1.352 1.096
F8 -0.239 -1.352 -1.096

Atom - Atom Distances (Å)
  C1 C2 H3 H4 F5 F6 F7 F8
C11.53321.09372.18421.34931.34932.35182.3518
C21.53322.18421.09372.35182.35181.34931.3493
H31.09372.18423.09561.99641.99642.64242.6424
H42.18421.09373.09562.64242.64241.99641.9964
F51.34932.35181.99642.64242.19262.74693.5146
F61.34932.35181.99642.64242.19263.51462.7469
F72.35181.34932.64241.99642.74693.51462.1926
F82.35181.34932.64241.99643.51462.74692.1926

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 111.405 C1 C2 F7 109.190
C1 C2 F8 109.190 C2 C1 H3 111.405
C2 C1 F5 109.190 C2 C1 F6 109.190
H3 C1 F5 109.165 H3 C1 F6 109.165
H4 C2 F7 109.165 H4 C2 F8 109.165
F5 C1 F6 108.681 F7 C2 F8 108.681
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at wB97X-D/TZVP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.242      
2 C 0.242      
3 H 0.122      
4 H 0.122      
5 F -0.182      
6 F -0.182      
7 F -0.182      
8 F -0.182      


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 -28.587 -3.099 0.000
y -3.099 -35.346 0.000
z 0.000 0.000 -35.869
Traceless
 xyz
x 7.021 -3.099 0.000
y -3.099 -3.118 0.000
z 0.000 0.000 -3.903
Polar
3z2-r2-7.805
x2-y26.759
xy-3.099
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.697 0.068 0.000
y 0.068 3.816 0.000
z 0.000 0.000 4.019


<r2> (average value of r2) Å2
<r2> 143.269
(<r2>)1/2 11.970