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

using model chemistry: CCSD/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2H 1AG
Energy calculated at CCSD/6-31G(2df,p)
 hartrees
Energy at 0K-1194.669362
Energy at 298.15K-1194.669994
HF Energy-1193.536838
Nuclear repulsion energy351.552463
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 CCSD/6-31G(2df,p)
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 1833 1733 0.00      
2 Ag 1265 1196 0.00      
3 Ag 659 623 0.00      
4 Ag 438 414 0.00      
5 Ag 295 279 0.00      
6 Au 384 363 1.76      
7 Au 140 132 0.05      
8 Bg 573 542 0.00      
9 Bu 1305 1234 257.00      
10 Bu 912 863 160.05      
11 Bu 434 410 3.05      
12 Bu 178 169 2.31      

Unscaled Zero Point Vibrational Energy (zpe) 4208.1 cm-1
Scaled (by 0.9455) Zero Point Vibrational Energy (zpe) 3978.7 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 CCSD/6-31G(2df,p)
ABC
0.14389 0.05065 0.03746

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD/6-31G(2df,p)

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.070 0.661 0.000
C2 0.070 -0.661 0.000
F3 -1.255 1.231 0.000
F4 1.255 -1.231 0.000
Cl5 1.255 1.740 0.000
Cl6 -1.255 -1.740 0.000

Atom - Atom Distances (Å)
  C1 C2 F3 F4 Cl5 Cl6
C11.32871.31582.31001.70892.6771
C21.32872.31001.31582.67711.7089
F31.31582.31003.51712.56162.9711
F42.31001.31583.51712.97112.5616
Cl51.70892.67712.56162.97114.2906
Cl62.67711.70892.97112.56164.2906

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 121.738 C1 C2 Cl6 123.124
C2 C1 F3 121.738 C2 C1 Cl5 123.124
F3 C1 Cl5 115.138 F4 C2 Cl6 115.138
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability