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: CCSD=FULL/aug-cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at CCSD=FULL/aug-cc-pVDZ
 hartrees
Energy at 0K-1194.604399
Energy at 298.15K-1194.604923
HF Energy-1193.587229
Nuclear repulsion energy349.356814
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=FULL/aug-cc-pVDZ
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 1800 1800 13.61      
2 A1 1183 1183 296.89      
3 A1 569 569 0.01      
4 A1 333 333 2.52      
5 A1 165 165 0.98      
6 A2 520 520 0.00      
7 A2 149 149 0.00      
8 B1 336 336 0.78      
9 B2 1211 1211 16.47      
10 B2 972 972 160.90      
11 B2 432 432 0.66      
12 B2 413 413 0.70      

Unscaled Zero Point Vibrational Energy (zpe) 4041.4 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 4041.4 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=FULL/aug-cc-pVDZ
ABC
0.10171 0.06135 0.03827

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD=FULL/aug-cc-pVDZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.671 0.411
C2 0.000 -0.671 0.411
F3 0.000 1.337 1.577
F4 0.000 -1.337 1.577
Cl5 0.000 1.674 -0.980
Cl6 0.000 -1.674 -0.980

Atom - Atom Distances (Å)
  C1 C2 F3 F4 Cl5 Cl6
C11.34231.34352.32271.71462.7265
C21.34232.32271.34352.72651.7146
F31.34352.32272.67452.57953.9508
F42.32271.34352.67453.95082.5795
Cl51.71462.72652.57953.95083.3482
Cl62.72651.71463.95082.57953.3482

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 119.724 C1 C2 Cl6 125.799
C2 C1 F3 119.724 C2 C1 Cl5 125.799
F3 C1 Cl5 114.477 F4 C2 Cl6 114.477
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability