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

using model chemistry: QCISD(T)/aug-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)/aug-cc-pVTZ
 hartrees
Energy at 0K-1194.986901
Energy at 298.15K-1194.987417
HF Energy-1193.694062
Nuclear repulsion energy349.868216
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)/aug-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 1755 1697        
2 Ag 1205 1165        
3 Ag 637 615        
4 Ag 427 413        
5 Ag 287 277        
6 Au 360 348        
7 Au 133 129        
8 Bg 526 508        
9 Bu 1233 1192        
10 Bu 890 861        
11 Bu 425 411        
12 Bu 173 167        

Unscaled Zero Point Vibrational Energy (zpe) 4025.1 cm-1
Scaled (by 0.9668) Zero Point Vibrational Energy (zpe) 3891.5 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 QCISD(T)/aug-cc-pVTZ
ABC
0.14258 0.05015 0.03710

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

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.061 0.665 0.000
C2 0.061 -0.665 0.000
F3 -1.260 1.242 0.000
F4 1.260 -1.242 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
C11.33631.33022.32021.70812.6948
C21.33632.32021.33022.69481.7081
F31.33022.32023.53832.57002.9902
F42.32021.33023.53832.99022.5700
Cl51.70812.69482.57002.99024.3096
Cl62.69481.70812.99022.57004.3096

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 120.948 C1 C2 Cl6 124.085
C2 C1 F3 120.948 C2 C1 Cl5 124.085
F3 C1 Cl5 114.967 F4 C2 Cl6 114.967
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability