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

using model chemistry: B3LYP/aug-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 B3LYP/aug-cc-pVDZ
 hartrees
Energy at 0K-476.842905
Energy at 298.15K-476.846819
HF Energy-476.842905
Nuclear repulsion energy264.158771
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/aug-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 3108 3016 0.00      
2 Ag 1440 1397 0.00      
3 Ag 1140 1106 0.00      
4 Ag 1090 1058 0.00      
5 Ag 609 591 0.00      
6 Ag 353 342 0.00      
7 Au 1321 1282 15.77      
8 Au 1106 1074 428.28      
9 Au 203 197 1.92      
10 Au 79 77 2.33      
11 Bg 1350 1310 0.00      
12 Bg 1071 1039 0.00      
13 Bg 472 459 0.00      
14 Bu 3118 3025 31.29      
15 Bu 1297 1258 19.84      
16 Bu 1104 1071 221.87      
17 Bu 524 509 8.70      
18 Bu 409 397 47.95      

Unscaled Zero Point Vibrational Energy (zpe) 9897.0 cm-1
Scaled (by 0.9704) Zero Point Vibrational Energy (zpe) 9604.0 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/aug-cc-pVDZ
ABC
0.16798 0.10333 0.06773

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/aug-cc-pVDZ

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.248 0.723 0.000
C2 0.248 -0.723 0.000
H3 -1.344 0.797 0.000
H4 1.344 -0.797 0.000
F5 0.248 1.355 1.107
F6 0.248 1.355 -1.107
F7 -0.248 -1.355 1.107
F8 -0.248 -1.355 -1.107

Atom - Atom Distances (Å)
  C1 C2 H3 H4 F5 F6 F7 F8
C11.52871.09842.20101.36751.36752.35422.3542
C21.52872.20101.09842.35422.35421.36751.3675
H31.09842.20103.12492.01762.01762.65622.6562
H42.20101.09843.12492.65622.65622.01762.0176
F51.36752.35422.01762.65622.21312.75503.5338
F61.36752.35422.01762.65622.21313.53382.7550
F72.35421.36752.65622.01762.75503.53382.2131
F82.35421.36752.65622.01763.53382.75502.2131

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 112.788 C1 C2 F7 108.627
C1 C2 F8 108.627 C2 C1 H3 112.788
C2 C1 F5 108.627 C2 C1 F6 108.627
H3 C1 F5 109.326 H3 C1 F6 109.326
H4 C2 F7 109.326 H4 C2 F8 109.326
F5 C1 F6 108.032 F7 C2 F8 108.032
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 1.210      
2 C 1.210      
3 H -0.381      
4 H -0.381      
5 F -0.415      
6 F -0.415      
7 F -0.415      
8 F -0.415      


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 -29.017 -3.089 0.000
y -3.089 -35.721 0.000
z 0.000 0.000 -36.203
Traceless
 xyz
x 6.945 -3.089 0.000
y -3.089 -3.110 0.000
z 0.000 0.000 -3.834
Polar
3z2-r2-7.669
x2-y26.704
xy-3.089
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.330 0.093 0.000
y 0.093 4.711 0.000
z 0.000 0.000 4.832


<r2> (average value of r2) Å2
<r2> 145.301
(<r2>)1/2 12.054