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)/cc-pVTZ

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)/cc-pVTZ
 hartrees
Energy at 0K-2834.432499
Energy at 298.15K 
HF Energy-2832.808167
Nuclear repulsion energy1017.406627
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)/cc-pVTZ
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 1008 983        
2 A1g 436 425        
3 A1g 223 218        
4 A1u 84 82        
5 A2u 802 782        
6 A2u 802 782        
7 A2u 691 674        
7 A2u 379 369        
8 Eg 876 854        
8 Eg 876 854        
9 Eg 343 335        
9 Eg 343 335        
10 Eg 225 220        
10 Eg 224 219        
11 Eu 280 273        
11 Eu 279 272        
12 Eu 166 161        
12 Eu 165 161        

Unscaled Zero Point Vibrational Energy (zpe) 4100.8 cm-1
Scaled (by 0.9748) Zero Point Vibrational Energy (zpe) 3997.5 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)/cc-pVTZ
ABC
0.02872 0.02363 0.02363

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

Point Group is D3d

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.789
C2 0.000 0.000 -0.789
Cl3 0.000 1.673 1.389
Cl4 -1.448 -0.836 1.389
Cl5 1.448 -0.836 1.389
Cl6 0.000 -1.673 -1.389
Cl7 -1.448 0.836 -1.389
Cl8 1.448 0.836 -1.389

Atom - Atom Distances (Å)
  C1 C2 Cl3 Cl4 Cl5 Cl6 Cl7 Cl8
C11.57761.77721.77721.77722.74632.74632.7463
C21.57762.74632.74632.74631.77721.77721.7772
Cl31.77722.74632.89702.89704.34883.24343.2434
Cl41.77722.74632.89702.89703.24343.24344.3488
Cl51.77722.74632.89702.89703.24344.34883.2434
Cl62.74631.77724.34883.24343.24342.89702.8970
Cl72.74631.77723.24343.24344.34882.89702.8970
Cl82.74631.77723.24344.34883.24342.89702.8970

picture of hexachloroethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 Cl6 109.753 C1 C2 Cl7 109.753
C1 C2 Cl8 109.753 C2 C1 Cl3 109.753
C2 C1 Cl4 109.753 C2 C1 Cl5 109.753
Cl3 C1 Cl4 109.188 Cl3 C1 Cl5 109.188
Cl4 C1 Cl5 109.188 Cl6 C2 Cl7 109.188
Cl6 C2 Cl8 109.188 Cl7 C2 Cl8 109.188
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability