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 CFClCClF (trans-1,2-dichloro-1,2-difluoroethylene)

using model chemistry: PBEPBEultrafine/aug-cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2H 1AG
Energy calculated at PBEPBEultrafine/aug-cc-pVTZ
 hartrees
Energy at 0K-1195.752276
Energy at 298.15K-1195.752695
HF Energy-1195.752276
Nuclear repulsion energy348.646498
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/aug-cc-pVTZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 Ag 1694 1675 0.00      
2 Ag 1132 1119 0.00      
3 Ag 622 615 0.00      
4 Ag 412 408 0.00      
5 Ag 280 277 0.00      
6 Au 349 345 0.21      
7 Au 127 126 0.24      
8 Bg 517 511 0.00      
9 Bu 1174 1161 289.74      
10 Bu 853 844 181.15      
11 Bu 414 409 1.95      
12 Bu 170 168 1.74      

Unscaled Zero Point Vibrational Energy (zpe) 3872.0 cm-1
Scaled (by 0.9888) Zero Point Vibrational Energy (zpe) 3828.6 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/aug-cc-pVTZ
ABC
0.14084 0.04995 0.03688

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBEultrafine/aug-cc-pVTZ

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.062 0.668 0.000
C2 0.062 -0.668 0.000
F3 -1.265 1.252 0.000
F4 1.265 -1.252 0.000
Cl5 1.265 1.749 0.000
Cl6 -1.265 -1.749 0.000

Atom - Atom Distances (Å)
  C1 C2 F3 F4 Cl5 Cl6
C11.34131.33772.33441.71212.6997
C21.34132.33441.33772.69971.7121
F31.33772.33443.56072.57883.0016
F42.33441.33773.56073.00162.5788
Cl51.71212.69972.57883.00164.3175
Cl62.69971.71213.00162.57884.3175

picture of trans-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 121.238 C1 C2 Cl6 123.850
C2 C1 F3 121.238 C2 C1 Cl5 123.850
F3 C1 Cl5 114.913 F4 C2 Cl6 114.913
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBEultrafine/aug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.311      
2 C 0.311      
3 F -0.246      
4 F -0.246      
5 Cl -0.065      
6 Cl -0.065      


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 0.000 0.000
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -45.913 2.499 0.000
y 2.499 -45.594 0.000
z 0.000 0.000 -45.620
Traceless
 xyz
x -0.306 2.499 0.000
y 2.499 0.172 0.000
z 0.000 0.000 0.134
Polar
3z2-r20.268
x2-y2-0.319
xy2.499
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 9.175 2.216 0.000
y 2.216 11.444 0.000
z 0.000 0.000 5.869


<r2> (average value of r2) Å2
<r2> 249.447
(<r2>)1/2 15.794