return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

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

using model chemistry: B3LYP/LANL2DZ

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/LANL2DZ
 hartrees
Energy at 0K-476.785753
Energy at 298.15K-476.789448
HF Energy-476.785753
Nuclear repulsion energy258.186922
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/LANL2DZ
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 3180 3057 0.00      
2 Ag 1428 1373 0.00      
3 Ag 1139 1095 0.00      
4 Ag 1036 995 0.00      
5 Ag 571 549 0.00      
6 Ag 333 320 0.00      
7 Au 1323 1272 8.77      
8 Au 1057 1016 343.85      
9 Au 194 186 4.24      
10 Au 67 64 4.32      
11 Bg 1347 1295 0.00      
12 Bg 1011 972 0.00      
13 Bg 449 431 0.00      
14 Bu 3190 3066 27.48      
15 Bu 1306 1255 17.21      
16 Bu 1045 1004 170.95      
17 Bu 482 464 13.94      
18 Bu 396 380 69.67      

Unscaled Zero Point Vibrational Energy (zpe) 9775.9 cm-1
Scaled (by 0.9612) Zero Point Vibrational Energy (zpe) 9396.6 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 B3LYP/LANL2DZ
ABC
0.15875 0.09987 0.06488

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/LANL2DZ

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.259 0.721 0.000
C2 0.259 -0.721 0.000
H3 -1.349 0.802 0.000
H4 1.349 -0.802 0.000
F5 0.259 1.380 1.139
F6 0.259 1.380 -1.139
F7 -0.259 -1.380 1.139
F8 -0.259 -1.380 -1.139

Atom - Atom Distances (Å)
  C1 C2 H3 H4 F5 F6 F7 F8
C11.53271.09322.21471.41371.41372.39002.3900
C21.53272.21471.09322.39002.39001.41371.4137
H31.09322.21473.13862.05322.05322.69182.6918
H42.21471.09323.13862.69182.69182.05322.0532
F51.41372.39002.05322.69182.27822.80733.6154
F61.41372.39002.05322.69182.27823.61542.8073
F72.39001.41372.69182.05322.80733.61542.2782
F82.39001.41372.69182.05323.61542.80732.2782

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 113.951 C1 C2 F7 108.348
C1 C2 F8 108.348 C2 C1 H3 113.951
C2 C1 F5 108.348 C2 C1 F6 108.348
H3 C1 F5 109.307 H3 C1 F6 109.307
H4 C2 F7 109.307 H4 C2 F8 109.307
F5 C1 F6 107.373 F7 C2 F8 107.373
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/LANL2DZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.183      
2 C 0.183      
3 H 0.243      
4 H 0.243      
5 F -0.213      
6 F -0.213      
7 F -0.213      
8 F -0.213      


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 -28.163 -4.006 0.000
y -4.006 -37.462 0.000
z 0.000 0.000 -37.753
Traceless
 xyz
x 9.444 -4.006 0.000
y -4.006 -4.503 0.000
z 0.000 0.000 -4.941
Polar
3z2-r2-9.882
x2-y29.299
xy-4.006
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.877 0.179 0.000
y 0.179 3.258 0.000
z 0.000 0.000 3.769


<r2> (average value of r2) Å2
<r2> 151.139
(<r2>)1/2 12.294