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All results from a given calculation for C2H6 (Ethane)

using model chemistry: QCISD(TQ)/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D3D 1A1g
Energy calculated at QCISD(TQ)/6-31G**
 hartrees
Energy at 0K-79.585977
Energy at 298.15K-79.591926
HF Energy-79.238085
Nuclear repulsion energy42.238034
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 QCISD(TQ)/6-31G**
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 3097 3097        
2 A1g 1479 1479        
3 A1g 1032 1032        
4 A1u 328 328        
5 A2u 3095 3095        
6 A2u 1451 1451        
7 Eg 3164 3164        
7 Eg 3164 3164        
8 Eg 1552 1552        
8 Eg 1551 1551        
9 Eg 1260 1260        
9 Eg 1260 1260        
10 Eu 3185 3185        
10 Eu 3185 3185        
11 Eu 1558 1558        
11 Eu 1557 1557        
12 Eu 837 837        
12 Eu 837 837        

Unscaled Zero Point Vibrational Energy (zpe) 16796.1 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 16796.1 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 QCISD(TQ)/6-31G**
ABC
2.68889 0.66703 0.66703

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD(TQ)/6-31G**

Point Group is D3d

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.764
C2 0.000 0.000 -0.764
H3 0.000 1.018 1.158
H4 -0.882 -0.509 1.158
H5 0.882 -0.509 1.158
H6 0.000 -1.018 -1.158
H7 -0.882 0.509 -1.158
H8 0.882 0.509 -1.158

Atom - Atom Distances (Å)
  C1 C2 H3 H4 H5 H6 H7 H8
C11.52891.09171.09171.09172.17572.17572.1757
C21.52892.17572.17572.17571.09171.09171.0917
H31.09172.17571.76361.76363.08442.53042.5304
H41.09172.17571.76361.76362.53042.53043.0844
H51.09172.17571.76361.76362.53043.08442.5304
H62.17571.09173.08442.53042.53041.76361.7636
H72.17571.09172.53042.53043.08441.76361.7636
H82.17571.09172.53043.08442.53041.76361.7636

picture of Ethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H6 111.143 C1 C2 H7 111.143
C1 C2 H8 111.143 C2 C1 H3 111.143
C2 C1 H4 111.143 C2 C1 H5 111.143
H3 C1 H4 107.749 H3 C1 H5 107.749
H4 C1 H5 107.749 H6 C2 H7 107.749
H6 C2 H8 107.749 H7 C2 H8 107.749
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability