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 CF2CCl2 (difluorodichloroethylene)

using model chemistry: PBEPBEultrafine/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 PBEPBEultrafine/3-21G
 hartrees
Energy at 0K-1189.638762
Energy at 298.15K-1189.639113
HF Energy-1189.638762
Nuclear repulsion energy343.335219
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 PBEPBEultrafine/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 1757 1741 97.90      
2 A1 1005 996 113.47      
3 A1 577 572 5.55      
4 A1 394 391 0.04      
5 A1 229 227 0.00      
6 A2 149 147 0.00      
7 B1 611 605 14.06      
8 B1 299 296 0.85      
9 B2 1326 1314 78.85      
10 B2 882 874 150.53      
11 B2 437 433 3.41      
12 B2 168 167 3.35      

Unscaled Zero Point Vibrational Energy (zpe) 3916.9 cm-1
Scaled (by 0.9909) Zero Point Vibrational Energy (zpe) 3881.3 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 PBEPBEultrafine/3-21G
ABC
0.07917 0.07081 0.03738

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.109
C2 0.000 0.000 -0.225
F3 0.000 1.123 1.861
F4 0.000 -1.123 1.861
Cl5 0.000 1.536 -1.141
Cl6 0.000 -1.536 -1.141

Atom - Atom Distances (Å)
  C1 C2 F3 F4 Cl5 Cl6
C11.33351.35191.35192.72422.7242
C21.33352.36912.36911.78861.7886
F31.35192.36912.24633.03074.0107
F41.35192.36912.24634.01073.0307
Cl52.72421.78863.03074.01073.0719
Cl62.72421.78864.01073.03073.0719

picture of difluorodichloroethylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 Cl5 120.825 C1 C2 Cl6 120.825
C2 C1 F3 123.822 C2 C1 F4 123.822
F3 C1 F4 112.356 Cl5 C2 Cl6 118.350
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBEultrafine/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.629      
2 C -0.646      
3 F -0.199      
4 F -0.199      
5 Cl 0.208      
6 Cl 0.208      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 0.595 0.595
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -45.902 0.000 0.000
y 0.000 -46.239 0.000
z 0.000 0.000 -46.179
Traceless
 xyz
x 0.307 0.000 0.000
y 0.000 -0.199 0.000
z 0.000 0.000 -0.108
Polar
3z2-r2-0.217
x2-y20.337
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.847 0.000 0.000
y 0.000 7.633 0.000
z 0.000 0.000 6.871


<r2> (average value of r2) Å2
<r2> 246.030
(<r2>)1/2 15.685