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/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 CCSD/6-31G(2df,p)
 hartrees
Energy at 0K-2834.063437
Energy at 298.15K 
HF Energy-2832.590831
Nuclear repulsion energy1020.495926
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/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 1044 987 0.00      
2 A1g 449 425 0.00      
3 A1g 229 216 0.00      
4 A1u 90 85 0.00      
5 A2u 712 673 46.12      
6 A2u 389 368 1.03      
7 Eg 917 867 0.00      
7 Eg 917 867 0.00      
8 Eg 353 334 0.00      
8 Eg 353 334 0.00      
9 Eg 231 218 0.00      
9 Eg 231 218 0.00      
10 Eu 838 792 168.11      
10 Eu 838 792 168.11      
11 Eu 286 270 0.02      
11 Eu 286 270 0.02      
12 Eu 170 161 0.09      
12 Eu 170 161 0.09      

Unscaled Zero Point Vibrational Energy (zpe) 4250.6 cm-1
Scaled (by 0.9455) Zero Point Vibrational Energy (zpe) 4018.9 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/6-31G(2df,p)
ABC
0.02896 0.02374 0.02374

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

Point Group is D3d

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.788
C2 0.000 0.000 -0.788
Cl3 0.000 1.666 1.388
Cl4 -1.443 -0.833 1.388
Cl5 1.443 -0.833 1.388
Cl6 0.000 -1.666 -1.388
Cl7 -1.443 0.833 -1.388
Cl8 1.443 0.833 -1.388

Atom - Atom Distances (Å)
  C1 C2 Cl3 Cl4 Cl5 Cl6 Cl7 Cl8
C11.57681.77031.77031.77032.74062.74062.7406
C21.57682.74062.74062.74061.77031.77031.7703
Cl31.77032.74062.88522.88524.33623.23703.2370
Cl41.77032.74062.88522.88523.23703.23704.3362
Cl51.77032.74062.88522.88523.23704.33623.2370
Cl62.74061.77034.33623.23703.23702.88522.8852
Cl72.74061.77033.23703.23704.33622.88522.8852
Cl82.74061.77033.23704.33623.23702.88522.8852

picture of hexachloroethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 Cl6 109.789 C1 C2 Cl7 109.789
C1 C2 Cl8 109.789 C2 C1 Cl3 109.789
C2 C1 Cl4 109.789 C2 C1 Cl5 109.789
Cl3 C1 Cl4 109.152 Cl3 C1 Cl5 109.152
Cl4 C1 Cl5 109.152 Cl6 C2 Cl7 109.152
Cl6 C2 Cl8 109.152 Cl7 C2 Cl8 109.152
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability