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: B97D3/aug-cc-pVTZ

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/aug-cc-pVTZ
 hartrees
Energy at 0K-476.733013
Energy at 298.15K-476.736878
HF Energy-476.733013
Nuclear repulsion energy263.698928
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/aug-cc-pVTZ
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 3022 2976 0.00      
2 Ag 1408 1386 0.00      
3 Ag 1101 1084 0.00      
4 Ag 1069 1053 0.00      
5 Ag 602 592 0.00      
6 Ag 349 344 0.00      
7 Au 1308 1288 14.81      
8 Au 1071 1054 438.07      
9 Au 205 202 1.76      
10 Au 78 77 1.84      
11 Bg 1337 1317 0.00      
12 Bg 1035 1019 0.00      
13 Bg 463 456 0.00      
14 Bu 3034 2988 47.15      
15 Bu 1291 1271 20.59      
16 Bu 1079 1062 222.66      
17 Bu 523 515 7.02      
18 Bu 404 397 42.35      

Unscaled Zero Point Vibrational Energy (zpe) 9687.9 cm-1
Scaled (by 0.9847) Zero Point Vibrational Energy (zpe) 9539.7 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/aug-cc-pVTZ
ABC
0.16771 0.10262 0.06734

See section I.F.4 to change rotational constant units
Geometric Data calculated at B97D3/aug-cc-pVTZ

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.246 0.729 0.000
C2 0.246 -0.729 0.000
H3 -1.340 0.799 0.000
H4 1.340 -0.799 0.000
F5 0.246 1.360 1.108
F6 0.246 1.360 -1.108
F7 -0.246 -1.360 1.108
F8 -0.246 -1.360 -1.108

Atom - Atom Distances (Å)
  C1 C2 H3 H4 F5 F6 F7 F8
C11.53801.09632.20211.36711.36712.36432.3643
C21.53802.20211.09632.36432.36431.36711.3671
H31.09632.20213.12042.01492.01492.66172.6617
H42.20211.09633.12042.66172.66172.01492.0149
F51.36712.36432.01492.66172.21592.76433.5428
F61.36712.36432.01492.66172.21593.54282.7643
F72.36431.36712.66172.01492.76433.54282.2159
F82.36431.36712.66172.01493.54282.76432.2159

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 112.341 C1 C2 F7 108.801
C1 C2 F8 108.801 C2 C1 H3 112.341
C2 C1 F5 108.801 C2 C1 F6 108.801
H3 C1 F5 109.266 H3 C1 F6 109.266
H4 C2 F7 109.266 H4 C2 F8 109.266
F5 C1 F6 108.279 F7 C2 F8 108.279
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B97D3/aug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.569      
2 C 0.569      
3 H 0.176      
4 H 0.176      
5 F -0.372      
6 F -0.372      
7 F -0.372      
8 F -0.372      


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 -28.935 -2.876 0.000
y -2.876 -35.186 0.000
z 0.000 0.000 -35.639
Traceless
 xyz
x 6.477 -2.876 0.000
y -2.876 -2.899 0.000
z 0.000 0.000 -3.578
Polar
3z2-r2-7.156
x2-y26.250
xy-2.876
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.562 0.072 0.000
y 0.072 4.983 0.000
z 0.000 0.000 5.043


<r2> (average value of r2) Å2
<r2> 145.698
(<r2>)1/2 12.071