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 C2Cl4 (Tetrachloroethylene)

using model chemistry: B97D3/6-311+G(3df,2p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D2H 1Ag
Energy calculated at B97D3/6-311+G(3df,2p)
 hartrees
Energy at 0K-1917.121904
Energy at 298.15K-1917.121852
HF Energy-1917.121904
Nuclear repulsion energy492.513138
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 B97D3/6-311+G(3df,2p)
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 1554 1534 0.00      
2 Ag 442 436 0.00      
3 Ag 237 234 0.00      
4 Au 93 92 0.00      
5 B1u 759 749 71.88      
6 B1u 313 309 0.08      
7 B2g 532 525 0.00      
8 B2u 859 848 206.67      
9 B2u 175 173 0.73      
10 B3g 932 920 0.00      
11 B3g 340 336 0.00      
12 B3u 287 283 0.37      

Unscaled Zero Point Vibrational Energy (zpe) 3261.2 cm-1
Scaled (by 0.987) Zero Point Vibrational Energy (zpe) 3218.8 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 B97D3/6-311+G(3df,2p)
ABC
0.05728 0.04608 0.02554

See section I.F.4 to change rotational constant units
Geometric Data calculated at B97D3/6-311+G(3df,2p)

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.676
C2 0.000 0.000 -0.676
Cl3 0.000 1.451 1.593
Cl4 0.000 -1.451 1.593
Cl5 0.000 -1.451 -1.593
Cl6 0.000 1.451 -1.593

Atom - Atom Distances (Å)
  C1 C2 Cl3 Cl4 Cl5 Cl6
C11.35101.71631.71632.69252.6925
C21.35102.69252.69251.71631.7163
Cl31.71632.69252.90114.30873.1857
Cl41.71632.69252.90113.18574.3087
Cl52.69251.71634.30873.18572.9011
Cl62.69251.71633.18574.30872.9011

picture of Tetrachloroethylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 Cl5 120.254 C1 C2 Cl6 120.254
C2 C1 Cl3 120.254 C2 C1 Cl4 120.254
Cl3 C1 Cl4 119.492 Cl5 C2 Cl6 119.492
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B97D3/6-311+G(3df,2p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.356      
2 C 0.356      
3 Cl -0.178      
4 Cl -0.178      
5 Cl -0.178      
6 Cl -0.178      


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 -61.231 0.000 0.000
y 0.000 -58.319 0.000
z 0.000 0.000 -60.124
Traceless
 xyz
x -2.010 0.000 0.000
y 0.000 2.359 0.000
z 0.000 0.000 -0.349
Polar
3z2-r2-0.698
x2-y2-2.913
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.980 0.000 0.000
y 0.000 14.274 0.000
z 0.000 0.000 15.521


<r2> (average value of r2) Å2
<r2> 358.493
(<r2>)1/2 18.934