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: CCSD(T)=FULL/cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D3D 1A1g
Energy calculated at CCSD(T)=FULL/cc-pVDZ
 hartrees
Energy at 0K-2833.929576
Energy at 298.15K 
HF Energy-2832.691823
Nuclear repulsion energy1010.972315
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 CCSD(T)=FULL/cc-pVDZ
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 1013 976        
2 A1g 434 418        
3 A1g 224 216        
4 A1u 88 84        
5 A2u 688 663        
6 A2u 381 367        
7 Eg 875 843        
7 Eg 875 843        
8 Eg 345 332        
8 Eg 345 332        
9 Eg 227 218        
9 Eg 227 218        
10 Eu 799 769        
10 Eu 799 769        
11 Eu 282 272        
11 Eu 282 272        
12 Eu 167 161        
12 Eu 167 161        

Unscaled Zero Point Vibrational Energy (zpe) 4108.0 cm-1
Scaled (by 0.9632) Zero Point Vibrational Energy (zpe) 3956.9 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 CCSD(T)=FULL/cc-pVDZ
ABC
0.02835 0.02334 0.02334

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD(T)=FULL/cc-pVDZ

Point Group is D3d

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.794
C2 0.000 0.000 -0.794
Cl3 0.000 1.684 1.398
Cl4 -1.458 -0.842 1.398
Cl5 1.458 -0.842 1.398
Cl6 0.000 -1.684 -1.398
Cl7 -1.458 0.842 -1.398
Cl8 1.458 0.842 -1.398

Atom - Atom Distances (Å)
  C1 C2 Cl3 Cl4 Cl5 Cl6 Cl7 Cl8
C11.58701.78871.78871.78872.76332.76332.7633
C21.58702.76332.76332.76331.78871.78871.7887
Cl31.78872.76332.91602.91604.37633.26333.2633
Cl41.78872.76332.91602.91603.26333.26334.3763
Cl51.78872.76332.91602.91603.26334.37633.2633
Cl62.76331.78874.37633.26333.26332.91602.9160
Cl72.76331.78873.26333.26334.37632.91602.9160
Cl82.76331.78873.26334.37633.26332.91602.9160

picture of hexachloroethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 Cl6 109.742 C1 C2 Cl7 109.742
C1 C2 Cl8 109.742 C2 C1 Cl3 109.742
C2 C1 Cl4 109.742 C2 C1 Cl5 109.742
Cl3 C1 Cl4 109.199 Cl3 C1 Cl5 109.199
Cl4 C1 Cl5 109.199 Cl6 C2 Cl7 109.199
Cl6 C2 Cl8 109.199 Cl7 C2 Cl8 109.199
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability