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: MP4/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 MP4/cc-pVDZ
 hartrees
Energy at 0K-1194.523292
Energy at 298.15K-1194.523793
HF Energy-1193.559710
Nuclear repulsion energy348.667893
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 MP4/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 1745 1687        
2 A1 1178 1139        
3 A1 562 543        
4 A1 325 315        
5 A1 167 162        
6 A2 519 502        
7 A2 145 140        
8 B1 346 335        
9 B2 1224 1183        
10 B2 955 923        
11 B2 428 413        
12 B2 413 400        

Unscaled Zero Point Vibrational Energy (zpe) 4002.3 cm-1
Scaled (by 0.9669) Zero Point Vibrational Energy (zpe) 3869.8 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 MP4/cc-pVDZ
ABC
0.10065 0.06151 0.03818

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4/cc-pVDZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.676 0.422
C2 0.000 -0.676 0.422
F3 0.000 1.348 1.582
F4 0.000 -1.348 1.582
Cl5 0.000 1.666 -0.987
Cl6 0.000 -1.666 -0.987

Atom - Atom Distances (Å)
  C1 C2 F3 F4 Cl5 Cl6
C11.35291.34052.33311.72132.7332
C21.35292.33311.34052.73321.7213
F31.34052.33312.69522.58873.9599
F42.33311.34052.69523.95992.5887
Cl51.72132.73322.58873.95993.3316
Cl62.73321.72133.95992.58873.3316

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 120.042 C1 C2 Cl6 125.082
C2 C1 F3 120.042 C2 C1 Cl5 125.082
F3 C1 Cl5 114.876 F4 C2 Cl6 114.876
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability