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: CCD/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at CCD/3-21G*
 hartrees
Energy at 0K-1188.554551
Energy at 298.15K-1188.555088
HF Energy-1187.844996
Nuclear repulsion energy347.787284
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 CCD/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 A1 1775 1698 2.42      
2 A1 1176 1124 180.23      
3 A1 549 525 1.53      
4 A1 314 300 2.55      
5 A1 177 169 1.99      
6 A2 587 562 0.00      
7 A2 150 144 0.00      
8 B1 359 344 2.99      
9 B2 1237 1183 4.11      
10 B2 935 894 122.37      
11 B2 437 418 0.00      
12 B2 400 383 1.64      

Unscaled Zero Point Vibrational Energy (zpe) 4047.9 cm-1
Scaled (by 0.9565) Zero Point Vibrational Energy (zpe) 3871.8 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 CCD/3-21G*
ABC
0.09857 0.06232 0.03818

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.667 0.419
C2 0.000 -0.667 0.419
F3 0.000 1.362 1.602
F4 0.000 -1.362 1.602
Cl5 0.000 1.645 -0.996
Cl6 0.000 -1.645 -0.996

Atom - Atom Distances (Å)
  C1 C2 F3 F4 Cl5 Cl6
C11.33311.37192.34801.72052.7106
C21.33312.34801.37192.71061.7205
F31.37192.34802.72382.61293.9738
F42.34801.37192.72383.97382.6129
Cl51.72052.71062.61293.97383.2910
Cl62.71061.72053.97382.61293.2910

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 120.456 C1 C2 Cl6 124.679
C2 C1 F3 120.456 C2 C1 Cl5 124.679
F3 C1 Cl5 114.865 F4 C2 Cl6 114.865
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability