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 CFClCFCl (cis-1,2-dichloro-1,2-difluoroethylene)

using model chemistry: MP4=FULL/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at MP4=FULL/6-31G*
 hartrees
Energy at 0K-1194.457536
Energy at 298.15K-1194.458009
HF Energy-1193.501314
Nuclear repulsion energy349.733098
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 MP4=FULL/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 A1 1760 1693        
2 A1 1196 1150        
3 A1 567 545        
4 A1 329 317        
5 A1 168 161        
6 A2 500 481        
7 A2 147 142        
8 B1 339 326        
9 B2 1240 1192        
10 B2 968 931        
11 B2 434 418        
12 B2 417 401        

Unscaled Zero Point Vibrational Energy (zpe) 4032.3 cm-1
Scaled (by 0.9616) Zero Point Vibrational Energy (zpe) 3877.5 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 MP4=FULL/6-31G*
ABC
0.10182 0.06151 0.03835

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4=FULL/6-31G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.671 0.405
C2 0.000 -0.671 0.405
F3 0.000 1.326 1.579
F4 0.000 -1.326 1.579
Cl5 0.000 1.676 -0.979
Cl6 0.000 -1.676 -0.979

Atom - Atom Distances (Å)
  C1 C2 F3 F4 Cl5 Cl6
C11.34251.34412.31681.70962.7244
C21.34252.31681.34412.72441.7096
F31.34412.31682.65232.58093.9434
F42.31681.34412.65233.94342.5809
Cl51.70962.72442.58093.94343.3517
Cl62.72441.70963.94342.58093.3517

picture of cis-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 119.157 C1 C2 Cl6 125.989
C2 C1 F3 119.157 C2 C1 Cl5 125.989
F3 C1 Cl5 114.854 F4 C2 Cl6 114.854
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability