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

using model chemistry: CCSD=FULL/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 CCSD=FULL/aug-cc-pVDZ
 hartrees
Energy at 0K-475.835486
Energy at 298.15K-475.839479
HF Energy-474.709772
Nuclear repulsion energy264.534644
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 CCSD=FULL/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 3152 3152 0.00      
2 Ag 1490 1490 0.00      
3 Ag 1180 1180 0.00      
4 Ag 1113 1113 0.00      
5 Ag 619 619 0.00      
6 Ag 360 360 0.00      
7 Au 1352 1352 31.15      
8 Au 1159 1159 393.98      
9 Au 206 206 2.10      
10 Au 88 88 2.50      
11 Bg 1383 1383 0.00      
12 Bg 1124 1124 0.00      
13 Bg 484 484 0.00      
14 Bu 3160 3160 28.69      
15 Bu 1320 1320 25.96      
16 Bu 1133 1133 217.32      
17 Bu 531 531 10.04      
18 Bu 410 410 51.22      

Unscaled Zero Point Vibrational Energy (zpe) 10132.9 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 10132.9 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 CCSD=FULL/aug-cc-pVDZ
ABC
0.16833 0.10379 0.06800

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

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.249 0.721 0.000
C2 0.249 -0.721 0.000
H3 -1.347 0.790 0.000
H4 1.347 -0.790 0.000
F5 0.249 1.352 1.105
F6 0.249 1.352 -1.105
F7 -0.249 -1.352 1.105
F8 -0.249 -1.352 -1.105

Atom - Atom Distances (Å)
  C1 C2 H3 H4 F5 F6 F7 F8
C11.52581.09972.19771.36641.36642.34892.3489
C21.52582.19771.09972.34892.34891.36641.3664
H31.09972.19773.12252.02062.02062.64822.6482
H42.19771.09973.12252.64822.64822.02062.0206
F51.36642.34892.02062.64822.21022.74883.5272
F61.36642.34892.02062.64822.21023.52722.7488
F72.34891.36642.64822.02062.74883.52722.2102
F82.34891.36642.64822.02063.52722.74882.2102

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 112.650 C1 C2 F7 108.492
C1 C2 F8 108.492 C2 C1 H3 112.650
C2 C1 F5 108.492 C2 C1 F6 108.492
H3 C1 F5 109.565 H3 C1 F6 109.565
H4 C2 F7 109.565 H4 C2 F8 109.565
F5 C1 F6 107.958 F7 C2 F8 107.958
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability