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

using model chemistry: B97D3/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 B97D3/TZVP
 hartrees
Energy at 0K-476.730969
Energy at 298.15K-476.734841
HF Energy-476.730969
Nuclear repulsion energy263.439173
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 B97D3/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 3028 2984 0.00      
2 Ag 1413 1392 0.00      
3 Ag 1098 1083 0.00      
4 Ag 1070 1054 0.00      
5 Ag 604 595 0.00      
6 Ag 351 346 0.00      
7 Au 1327 1308 21.32      
8 Au 1071 1056 447.59      
9 Au 208 205 2.61      
10 Au 76 75 2.05      
11 Bg 1357 1337 0.00      
12 Bg 1038 1023 0.00      
13 Bg 464 457 0.00      
14 Bu 3040 2996 54.01      
15 Bu 1296 1278 24.33      
16 Bu 1078 1062 235.10      
17 Bu 527 519 7.47      
18 Bu 407 401 48.46      

Unscaled Zero Point Vibrational Energy (zpe) 9724.7 cm-1
Scaled (by 0.9856) Zero Point Vibrational Energy (zpe) 9584.7 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 B97D3/TZVP
ABC
0.16709 0.10255 0.06721

See section I.F.4 to change rotational constant units
Geometric Data calculated at B97D3/TZVP

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.246 0.730 0.000
C2 0.246 -0.730 0.000
H3 -1.341 0.799 0.000
H4 1.341 -0.799 0.000
F5 0.246 1.360 1.110
F6 0.246 1.360 -1.110
F7 -0.246 -1.360 1.110
F8 -0.246 -1.360 -1.110

Atom - Atom Distances (Å)
  C1 C2 H3 H4 F5 F6 F7 F8
C11.54041.09712.20371.36811.36812.36682.3668
C21.54042.20371.09712.36682.36681.36811.3681
H31.09712.20373.12202.01612.01612.66382.6638
H42.20371.09713.12202.66382.66382.01612.0161
F51.36812.36682.01612.66382.22032.76493.5460
F61.36812.36682.01612.66382.22033.54602.7649
F72.36681.36812.66382.01612.76493.54602.2203
F82.36681.36812.66382.01613.54602.76492.2203

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 112.248 C1 C2 F7 108.784
C1 C2 F8 108.784 C2 C1 H3 112.248
C2 C1 F5 108.784 C2 C1 F6 108.784
H3 C1 F5 109.240 H3 C1 F6 109.240
H4 C2 F7 109.240 H4 C2 F8 109.240
F5 C1 F6 108.472 F7 C2 F8 108.472
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B97D3/TZVP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.228      
2 C 0.228      
3 H 0.105      
4 H 0.105      
5 F -0.166      
6 F -0.166      
7 F -0.166      
8 F -0.166      


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 -28.804 -2.971 0.000
y -2.971 -35.375 0.000
z 0.000 0.000 -35.817
Traceless
 xyz
x 6.792 -2.971 0.000
y -2.971 -3.065 0.000
z 0.000 0.000 -3.727
Polar
3z2-r2-7.454
x2-y26.571
xy-2.971
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.865 0.064 0.000
y 0.064 4.076 0.000
z 0.000 0.000 4.290


<r2> (average value of r2) Å2
<r2> 145.980
(<r2>)1/2 12.082