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All results from a given calculation for C2Cl4 (Tetrachloroethylene)

using model chemistry: mPW1PW91/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D2H 1Ag
Energy calculated at mPW1PW91/6-31+G**
 hartrees
Energy at 0K-1916.966680
Energy at 298.15K-1916.966774
Nuclear repulsion energy493.165801
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 mPW1PW91/6-31+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 Ag 1656 1576 0.00      
2 Ag 465 443 0.00      
3 Ag 245 233 0.00      
4 Au 99 94 0.00      
5 B1u 802 763 76.52      
6 B1u 326 310 0.10      
7 B2g 549 522 0.00      
8 B2u 934 889 219.62      
9 B2u 182 173 0.87      
10 B3g 1017 968 0.00      
11 B3g 354 337 0.00      
12 B3u 301 286 0.64      

Unscaled Zero Point Vibrational Energy (zpe) 3463.8 cm-1
Scaled (by 0.9518) Zero Point Vibrational Energy (zpe) 3296.9 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 mPW1PW91/6-31+G**
ABC
0.05734 0.04627 0.02561

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/6-31+G**

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.673
C2 0.000 0.000 -0.673
Cl3 0.000 1.450 1.590
Cl4 0.000 -1.450 1.590
Cl5 0.000 -1.450 -1.590
Cl6 0.000 1.450 -1.590

Atom - Atom Distances (Å)
  C1 C2 Cl3 Cl4 Cl5 Cl6
C11.34521.71541.71542.68692.6869
C21.34522.68692.68691.71541.7154
Cl31.71542.68692.89944.30283.1792
Cl41.71542.68692.89943.17924.3028
Cl52.68691.71544.30283.17922.8994
Cl62.68691.71543.17924.30282.8994

picture of Tetrachloroethylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 Cl5 122.314 C1 C2 Cl6 122.314
C2 C1 Cl3 122.314 C2 C1 Cl4 122.314
Cl3 C1 Cl4 115.372 Cl5 C2 Cl6 115.372
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.498      
2 C -0.498      
3 Cl 0.249      
4 Cl 0.249      
5 Cl 0.249      
6 Cl 0.249      


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 -61.590 0.000 0.000
y 0.000 -58.746 0.000
z 0.000 0.000 -60.604
Traceless
 xyz
x -1.915 0.000 0.000
y 0.000 2.351 0.000
z 0.000 0.000 -0.436
Polar
3z2-r2-0.871
x2-y2-2.844
xy0.000
xz0.000
yz0.000


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


<r2> (average value of r2) Å2
<r2> 357.836
(<r2>)1/2 18.917