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 C2Cl6 (hexachloroethane)

using model chemistry: PBEPBE/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D3D 1A1g
Energy calculated at PBEPBE/6-31G(2df,p)
 hartrees
Energy at 0K-2836.083393
Energy at 298.15K 
HF Energy-2836.083393
Nuclear repulsion energy1012.140256
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 PBEPBE/6-31G(2df,p)
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A1g 917 908 0.00 4.25 0.05 0.09
2 A1g 422 418 0.00 26.58 0.02 0.04
3 A1g 213 210 0.00 1.40 0.55 0.71
4 A1u 79 78 0.00 0.00 0.00 0.00
5 A2u 659 652 66.01 0.00 0.00 0.00
6 A2u 367 363 0.78 0.00 0.00 0.00
7 Eg 798 790 0.00 7.67 0.75 0.86
7 Eg 798 790 0.00 7.67 0.75 0.86
8 Eg 327 323 0.00 6.75 0.75 0.86
8 Eg 327 323 0.00 6.75 0.75 0.86
9 Eg 213 211 0.00 3.32 0.75 0.86
9 Eg 213 211 0.00 3.31 0.75 0.86
10 Eu 739 731 242.84 0.00 0.00 0.00
10 Eu 739 731 242.83 0.00 0.00 0.00
11 Eu 267 264 0.03 0.00 0.00 0.00
11 Eu 267 264 0.03 0.00 0.00 0.00
12 Eu 156 154 0.13 0.00 0.00 0.00
12 Eu 156 154 0.13 0.00 0.00 0.00

Unscaled Zero Point Vibrational Energy (zpe) 3827.6 cm-1
Scaled (by 0.9897) Zero Point Vibrational Energy (zpe) 3788.2 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 PBEPBE/6-31G(2df,p)
ABC
0.02845 0.02337 0.02337

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/6-31G(2df,p)

Point Group is D3d

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.798
C2 0.000 0.000 -0.798
Cl3 0.000 1.680 1.398
Cl4 -1.455 -0.840 1.398
Cl5 1.455 -0.840 1.398
Cl6 0.000 -1.680 -1.398
Cl7 -1.455 0.840 -1.398
Cl8 1.455 0.840 -1.398

Atom - Atom Distances (Å)
  C1 C2 Cl3 Cl4 Cl5 Cl6 Cl7 Cl8
C11.59621.78411.78411.78412.76502.76502.7650
C21.59622.76502.76502.76501.78411.78411.7841
Cl31.78412.76502.91052.91054.37143.26163.2616
Cl41.78412.76502.91052.91053.26163.26164.3714
Cl51.78412.76502.91052.91053.26164.37143.2616
Cl62.76501.78414.37143.26163.26162.91052.9105
Cl72.76501.78413.26163.26164.37142.91052.9105
Cl82.76501.78413.26164.37143.26162.91052.9105

picture of hexachloroethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 Cl6 109.636 C1 C2 Cl7 109.636
C1 C2 Cl8 109.636 C2 C1 Cl3 109.636
C2 C1 Cl4 109.636 C2 C1 Cl5 109.636
Cl3 C1 Cl4 109.306 Cl3 C1 Cl5 109.306
Cl4 C1 Cl5 109.305 Cl6 C2 Cl7 109.306
Cl6 C2 Cl8 109.306 Cl7 C2 Cl8 109.305
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.088      
2 C 0.088      
3 Cl -0.029      
4 Cl -0.029      
5 Cl -0.029      
6 Cl -0.029      
7 Cl -0.029      
8 Cl -0.029      


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 -83.577 0.000 0.000
y 0.000 -83.577 0.000
z 0.000 0.000 -85.494
Traceless
 xyz
x 0.958 0.000 0.000
y 0.000 0.958 0.000
z 0.000 0.000 -1.916
Polar
3z2-r2-3.833
x2-y20.000
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 14.439 0.000 0.000
y 0.000 14.439 0.000
z 0.000 0.000 13.105


<r2> (average value of r2) Å2
<r2> 547.519
(<r2>)1/2 23.399