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

using model chemistry: B3PW91/cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2H 1AG
Energy calculated at B3PW91/cc-pVDZ
 hartrees
Energy at 0K-476.620382
Energy at 298.15K-476.624325
HF Energy-476.620382
Nuclear repulsion energy265.897635
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 B3PW91/cc-pVDZ
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 3090 2982 0.00      
2 Ag 1460 1409 0.00      
3 Ag 1160 1119 0.00      
4 Ag 1111 1072 0.00      
5 Ag 624 603 0.00      
6 Ag 359 346 0.00      
7 Au 1343 1296 57.81      
8 Au 1167 1126 386.29      
9 Au 197 190 2.38      
10 Au 75 73 2.06      
11 Bg 1370 1322 0.00      
12 Bg 1133 1094 0.00      
13 Bg 480 463 0.00      
14 Bu 3101 2992 56.91      
15 Bu 1302 1257 31.79      
16 Bu 1145 1105 232.26      
17 Bu 542 523 8.96      
18 Bu 402 388 45.31      

Unscaled Zero Point Vibrational Energy (zpe) 10030.1 cm-1
Scaled (by 0.965) Zero Point Vibrational Energy (zpe) 9679.1 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 B3PW91/cc-pVDZ
ABC
0.17005 0.10475 0.06862

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/cc-pVDZ

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.244 0.721 0.000
C2 0.244 -0.721 0.000
H3 -1.345 0.780 0.000
H4 1.345 -0.780 0.000
F5 0.244 1.346 1.100
F6 0.244 1.346 -1.100
F7 -0.244 -1.346 1.100
F8 -0.244 -1.346 -1.100

Atom - Atom Distances (Å)
  C1 C2 H3 H4 F5 F6 F7 F8
C11.52251.10262.18581.35581.35582.34132.3413
C21.52252.18581.10262.34132.34131.35581.3558
H31.10262.18583.10962.01372.01372.63462.6346
H42.18581.10263.10962.63462.63462.01372.0137
F51.35582.34132.01372.63462.19992.73543.5102
F61.35582.34132.01372.63462.19993.51022.7354
F72.34131.35582.63462.01372.73543.51022.1999
F82.34131.35582.63462.01373.51022.73542.1999

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 111.751 C1 C2 F7 108.732
C1 C2 F8 108.732 C2 C1 H3 111.751
C2 C1 F5 108.732 C2 C1 F6 108.732
H3 C1 F5 109.557 H3 C1 F6 109.557
H4 C2 F7 109.557 H4 C2 F8 109.557
F5 C1 F6 108.446 F7 C2 F8 108.446
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.341      
2 C 0.341      
3 H 0.051      
4 H 0.051      
5 F -0.196      
6 F -0.196      
7 F -0.196      
8 F -0.196      


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 -28.168 -2.501 0.000
y -2.501 -34.299 0.000
z 0.000 0.000 -34.475
Traceless
 xyz
x 6.219 -2.501 0.000
y -2.501 -2.978 0.000
z 0.000 0.000 -3.241
Polar
3z2-r2-6.483
x2-y26.131
xy-2.501
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.384 -0.028 0.000
y -0.028 3.379 0.000
z 0.000 0.000 3.502


<r2> (average value of r2) Å2
<r2> 142.867
(<r2>)1/2 11.953