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: G3B3

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2H 1AG
Energy calculated at G3B3
 hartrees
Energy at 0K-1195.835484
Energy at 298.15K-1195.828532
HF Energy-1196.224310
Nuclear repulsion energy348.748721
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/6-31G*
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 1785 1714 0.00      
2 Ag 1210 1162 0.00      
3 Ag 641 616 0.00      
4 Ag 423 406 0.00      
5 Ag 290 279 0.00      
6 Au 366 351 1.32      
7 Au 134 129 0.07      
8 Bg 538 517 0.00      
9 Bu 1254 1204 295.54      
10 Bu 870 836 195.08      
11 Bu 423 406 1.74      
12 Bu 177 170 2.37      

Unscaled Zero Point Vibrational Energy (zpe) 4055.5 cm-1
Scaled (by 0.9603) Zero Point Vibrational Energy (zpe) 3894.5 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/6-31G*
ABC
0.14177 0.04981 0.03686

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-31G*

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.067 0.664 0.000
C2 0.067 -0.664 0.000
F3 -1.265 1.242 0.000
F4 1.265 -1.242 0.000
Cl5 1.265 1.755 0.000
Cl6 -1.265 -1.755 0.000

Atom - Atom Distances (Å)
  C1 C2 F3 F4 Cl5 Cl6
C11.33421.32992.32521.72192.6987
C21.33422.32521.32992.69871.7219
F31.32992.32523.54562.58092.9970
F42.32521.32993.54562.99702.5809
Cl51.72192.69872.58092.99704.3261
Cl62.69871.72192.99702.58094.3261

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 121.726 C1 C2 Cl6 123.559
C2 C1 F3 121.726 C2 C1 Cl5 123.559
F3 C1 Cl5 114.715 F4 C2 Cl6 114.715
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.170      
2 C 0.170      
3 F -0.225      
4 F -0.225      
5 Cl 0.055      
6 Cl 0.055      


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


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


<r2> (average value of r2) Å2
<r2> 249.149
(<r2>)1/2 15.784