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All results from a given calculation for C2Cl4 (Tetrachloroethylene)

using model chemistry: HF/CEP-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D2H 1Ag
Energy calculated at HF/CEP-31G
 hartrees
Energy at 0K-69.525574
Energy at 298.15K-69.525726
Nuclear repulsion energy105.947047
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 HF/CEP-31G
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 1830 1650 0.00      
2 Ag 446 402 0.00      
3 Ag 244 220 0.00      
4 Au 105 94 0.00      
5 B1u 785 707 67.98      
6 B1u 323 291 0.01      
7 B2g 623 562 0.00      
8 B2u 941 848 150.57      
9 B2u 184 166 1.78      
10 B3g 1044 941 0.00      
11 B3g 357 322 0.00      
12 B3u 320 289 1.35      

Unscaled Zero Point Vibrational Energy (zpe) 3601.1 cm-1
Scaled (by 0.9014) Zero Point Vibrational Energy (zpe) 3246.1 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 HF/CEP-31G
ABC
0.05406 0.04345 0.02409

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/CEP-31G

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.672
C2 0.000 0.000 -0.672
Cl3 0.000 1.493 1.642
Cl4 0.000 -1.493 1.642
Cl5 0.000 -1.493 -1.642
Cl6 0.000 1.493 -1.642

Atom - Atom Distances (Å)
  C1 C2 Cl3 Cl4 Cl5 Cl6
C11.34461.78041.78042.75422.7542
C21.34462.75422.75421.78041.7804
Cl31.78042.75422.98624.43873.2840
Cl41.78042.75422.98623.28404.4387
Cl52.75421.78044.43873.28402.9862
Cl62.75421.78043.28404.43872.9862

picture of Tetrachloroethylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 Cl5 123.001 C1 C2 Cl6 123.001
C2 C1 Cl3 123.001 C2 C1 Cl4 123.001
Cl3 C1 Cl4 113.998 Cl5 C2 Cl6 113.998
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/CEP-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.259      
2 C -0.259      
3 Cl 0.130      
4 Cl 0.130      
5 Cl 0.130      
6 Cl 0.130      


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 -60.038 0.000 0.000
y 0.000 -60.081 0.000
z 0.000 0.000 -61.455
Traceless
 xyz
x 0.729 0.000 0.000
y 0.000 0.666 0.000
z 0.000 0.000 -1.395
Polar
3z2-r2-2.791
x2-y20.042
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.852 0.000 0.000
y 0.000 11.279 0.000
z 0.000 0.000 10.837


<r2> (average value of r2) Å2
<r2> 179.334
(<r2>)1/2 13.392