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

using model chemistry: QCISD/3-21G

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/3-21G
 hartrees
Energy at 0K-1188.162976
Energy at 298.15K-1188.163324
HF Energy-1187.621108
Nuclear repulsion energy338.364634
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/3-21G
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 1813 1757 0.00      
2 Ag 1179 1142 0.00      
3 Ag 602 583 0.00      
4 Ag 382 370 0.00      
5 Ag 265 256 0.00      
6 Au 361 350 4.23      
7 Au 134 130 0.01      
8 Bg 573 556 0.00      
9 Bu 1255 1217 161.04      
10 Bu 776 752 126.03      
11 Bu 379 368 2.29      
12 Bu 164 159 4.13      

Unscaled Zero Point Vibrational Energy (zpe) 3940.4 cm-1
Scaled (by 0.9692) Zero Point Vibrational Energy (zpe) 3819.1 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/3-21G
ABC
0.13326 0.04711 0.03481

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/3-21G

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.093 0.655 0.000
C2 0.093 -0.655 0.000
F3 -1.322 1.241 0.000
F4 1.322 -1.241 0.000
Cl5 1.322 1.800 0.000
Cl6 -1.322 -1.800 0.000

Atom - Atom Distances (Å)
  C1 C2 F3 F4 Cl5 Cl6
C11.32381.36132.36631.82032.7458
C21.32382.36631.36132.74581.8203
F31.36132.36633.62662.70233.0414
F42.36631.36133.62663.04142.7023
Cl51.82032.74582.70233.04144.4669
Cl62.74581.82033.04142.70234.4669

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 123.590 C1 C2 Cl6 120.878
C2 C1 F3 123.590 C2 C1 Cl5 120.878
F3 C1 Cl5 115.532 F4 C2 Cl6 115.532
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability