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: B3PW91/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B3PW91/6-31+G**
 hartrees
Energy at 0K-1196.035396
Energy at 298.15K-1196.035942
HF Energy-1196.035396
Nuclear repulsion energy351.446521
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 B3PW91/6-31+G**
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 1777 1706 15.70      
2 A1 1183 1136 370.62      
3 A1 575 552 0.88      
4 A1 332 319 2.50      
5 A1 168 162 1.09      
6 A2 551 529 0.00      
7 A2 147 141 0.00      
8 B1 345 331 0.33      
9 B2 1221 1172 28.96      
10 B2 971 932 182.47      
11 B2 435 418 0.15      
12 B2 419 402 0.47      

Unscaled Zero Point Vibrational Energy (zpe) 4061.8 cm-1
Scaled (by 0.9601) Zero Point Vibrational Energy (zpe) 3899.7 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 B3PW91/6-31+G**
ABC
0.10310 0.06198 0.03871

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-31+G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.668 0.408
C2 0.000 -0.668 0.408
F3 0.000 1.329 1.567
F4 0.000 -1.329 1.567
Cl5 0.000 1.666 -0.973
Cl6 0.000 -1.666 -0.973

Atom - Atom Distances (Å)
  C1 C2 F3 F4 Cl5 Cl6
C11.33671.33342.30891.70442.7128
C21.33672.30891.33342.71281.7044
F31.33342.30892.65822.56223.9272
F42.30891.33342.65823.92722.5622
Cl51.70442.71282.56223.92723.3322
Cl62.71281.70443.92722.56223.3322

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 119.708 C1 C2 Cl6 125.832
C2 C1 F3 119.708 C2 C1 Cl5 125.832
F3 C1 Cl5 114.461 F4 C2 Cl6 114.461
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.001      
2 C -0.001      
3 F -0.216      
4 F -0.216      
5 Cl 0.217      
6 Cl 0.217      


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 -1.067 1.067
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -45.466 0.000 0.000
y 0.000 -45.792 0.000
z 0.000 0.000 -46.582
Traceless
 xyz
x 0.720 0.000 0.000
y 0.000 0.233 0.000
z 0.000 0.000 -0.953
Polar
3z2-r2-1.906
x2-y20.325
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.279 0.000 0.000
y 0.000 9.427 0.000
z 0.000 0.000 7.363


<r2> (average value of r2) Å2
<r2> 238.630
(<r2>)1/2 15.448