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All results from a given calculation for CFClCClF (trans-1,2-dichloro-1,2-difluoroethylene)

using model chemistry: QCISD(T)/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 QCISD(T)/cc-pVTZ
 hartrees
Energy at 0K-1194.952130
Energy at 298.15K-1194.952668
HF Energy-1193.689447
Nuclear repulsion energy349.887698
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 QCISD(T)/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 1762 1671        
2 Ag 1221 1158        
3 Ag 640 607        
4 Ag 428 406        
5 Ag 289 274        
6 Au 366 347        
7 Au 134 127        
8 Bg 529 502        
9 Bu 1251 1187        
10 Bu 890 844        
11 Bu 426 404        
12 Bu 176 167        

Unscaled Zero Point Vibrational Energy (zpe) 4055.1 cm-1
Scaled (by 0.9486) Zero Point Vibrational Energy (zpe) 3846.6 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 QCISD(T)/cc-pVTZ
ABC
0.14258 0.05016 0.03711

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD(T)/cc-pVTZ

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.064 0.665 0.000
C2 0.064 -0.665 0.000
F3 -1.260 1.241 0.000
F4 1.260 -1.241 0.000
Cl5 1.260 1.748 0.000
Cl6 -1.260 -1.748 0.000

Atom - Atom Distances (Å)
  C1 C2 F3 F4 Cl5 Cl6
C11.33681.32712.32091.71062.6935
C21.33682.32091.32712.69351.7106
F31.32712.32093.53672.57092.9887
F42.32091.32713.53672.98872.5709
Cl51.71062.69352.57092.98874.3099
Cl62.69351.71062.98872.57094.3099

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 121.199 C1 C2 Cl6 123.759
C2 C1 F3 121.199 C2 C1 Cl5 123.759
F3 C1 Cl5 115.043 F4 C2 Cl6 115.043
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability