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 CFClCClF (trans-1,2-dichloro-1,2-difluoroethylene)

using model chemistry: B2PLYP=FULLultrafine/6-311G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2H 1AG
Energy calculated at B2PLYP=FULLultrafine/6-311G**
 hartrees
Energy at 0K-1195.882934
Energy at 298.15K 
HF Energy-1195.520245
Nuclear repulsion energy349.993871
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 B2PLYP=FULLultrafine/6-311G**
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 1773 1773 0.00      
2 Ag 1202 1202 0.00      
3 Ag 643 643 0.00      
4 Ag 429 429 0.00      
5 Ag 293 293 0.00      
6 Au 369 369 0.81      
7 Au 136 136 0.29      
8 Bg 554 554 0.00      
9 Bu 1234 1234 324.87      
10 Bu 885 885 198.16      
11 Bu 431 431 2.56      
12 Bu 179 179 2.65      

Unscaled Zero Point Vibrational Energy (zpe) 4064.3 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 4064.3 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 B2PLYP=FULLultrafine/6-311G**
ABC
0.14241 0.05025 0.03714

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULLultrafine/6-311G**

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.066 0.663 0.000
C2 0.066 -0.663 0.000
F3 -1.260 1.242 0.000
F4 1.260 -1.242 0.000
Cl5 1.260 1.746 0.000
Cl6 -1.260 -1.746 0.000

Atom - Atom Distances (Å)
  C1 C2 F3 F4 Cl5 Cl6
C11.33211.32762.32071.71222.6886
C21.33212.32071.32762.68861.7122
F31.32762.32073.53862.57072.9876
F42.32071.32763.53862.98762.5707
Cl51.71222.68862.57072.98764.3065
Cl62.68861.71222.98762.57074.3065

picture of trans-1,2-dichloro-1,2-difluoroethylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 F4 121.516 C1 C2 Cl6 123.578
C2 C1 F3 121.516 C2 C1 Cl5 123.578
F3 C1 Cl5 114.906 F4 C2 Cl6 114.906
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability