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

using model chemistry: BLYP/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 BLYP/cc-pVDZ
 hartrees
Energy at 0K-476.723765
Energy at 298.15K-476.727535
HF Energy-476.723765
Nuclear repulsion energy261.995119
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 BLYP/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 2976 2981 0.00      
2 Ag 1386 1388 0.00      
3 Ag 1091 1093 0.00      
4 Ag 1057 1059 0.00      
5 Ag 589 590 0.00      
6 Ag 342 342 0.00      
7 Au 1287 1290 39.37      
8 Au 1074 1076 369.42      
9 Au 192 192 2.29      
10 Au 70 70 1.59      
11 Bg 1315 1317 0.00      
12 Bg 1040 1041 0.00      
13 Bg 454 455 0.00      
14 Bu 2986 2991 68.67      
15 Bu 1256 1258 27.38      
16 Bu 1070 1072 207.20      
17 Bu 512 513 6.58      
18 Bu 390 390 41.41      

Unscaled Zero Point Vibrational Energy (zpe) 9543.4 cm-1
Scaled (by 1.0016) Zero Point Vibrational Energy (zpe) 9558.6 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 BLYP/cc-pVDZ
ABC
0.16467 0.10195 0.06663

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

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.248 0.728 0.000
C2 0.248 -0.728 0.000
H3 -1.358 0.789 0.000
H4 1.358 -0.789 0.000
F5 0.248 1.365 1.118
F6 0.248 1.365 -1.118
F7 -0.248 -1.365 1.118
F8 -0.248 -1.365 -1.118

Atom - Atom Distances (Å)
  C1 C2 H3 H4 F5 F6 F7 F8
C11.53861.11142.20941.37871.37872.37282.3728
C21.53862.20941.11142.37282.37281.37871.3787
H31.11142.20943.14102.03932.03932.66862.6686
H42.20941.11143.14102.66862.66862.03932.0393
F51.37872.37282.03932.66862.23622.77393.5630
F61.37872.37282.03932.66862.23623.56302.7739
F72.37281.37872.66862.03932.77393.56302.2362
F82.37281.37872.66862.03933.56302.77392.2362

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 111.954 C1 C2 F7 108.723
C1 C2 F8 108.723 C2 C1 H3 111.954
C2 C1 F5 108.723 C2 C1 F6 108.723
H3 C1 F5 109.494 H3 C1 F6 109.494
H4 C2 F7 109.494 H4 C2 F8 109.494
F5 C1 F6 108.380 F7 C2 F8 108.380
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.323      
2 C 0.323      
3 H 0.015      
4 H 0.015      
5 F -0.169      
6 F -0.169      
7 F -0.169      
8 F -0.169      


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 -28.583 -2.312 0.000
y -2.312 -34.324 0.000
z 0.000 0.000 -34.351
Traceless
 xyz
x 5.754 -2.312 0.000
y -2.312 -2.856 0.000
z 0.000 0.000 -2.898
Polar
3z2-r2-5.796
x2-y25.740
xy-2.312
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.596 -0.040 0.000
y -0.040 3.624 0.000
z 0.000 0.000 3.741


<r2> (average value of r2) Å2
<r2> 146.537
(<r2>)1/2 12.105