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All results from a given calculation for C2H6 (Ethane)

using model chemistry: QCISD(TQ)/cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 no D3D 1A1g
Energy calculated at QCISD(TQ)/cc-pVTZ
 hartrees
Energy at 0K-79.674634
Energy at 298.15K 
HF Energy-79.259792
Nuclear repulsion energy42.232242
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)/cc-pVTZ
Rotational Constants (cm-1) from geometry optimized at QCISD(TQ)/cc-pVTZ
See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD(TQ)/cc-pVTZ

Point Group is D3d

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.765
C2 0.000 0.000 -0.765
H3 0.000 1.018 1.159
H4 -0.882 -0.509 1.159
H5 0.882 -0.509 1.159
H6 0.000 -1.018 -1.159
H7 -0.882 0.509 -1.159
H8 0.882 0.509 -1.159

Atom - Atom Distances (Å)
  C1 C2 H3 H4 H5 H6 H7 H8
C11.52981.09171.09171.09172.17692.17692.1769
C21.52982.17692.17692.17691.09171.09171.0917
H31.09172.17691.76321.76323.08562.53232.5323
H41.09172.17691.76321.76322.53232.53233.0856
H51.09172.17691.76321.76322.53233.08562.5323
H62.17691.09173.08562.53232.53231.76321.7632
H72.17691.09172.53232.53233.08561.76321.7632
H82.17691.09172.53233.08562.53231.76321.7632

picture of Ethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H6 111.180 C1 C2 H7 111.180
C1 C2 H8 111.180 C2 C1 H3 111.180
C2 C1 H4 111.180 C2 C1 H5 111.180
H3 C1 H4 107.710 H3 C1 H5 107.710
H4 C1 H5 107.710 H6 C2 H7 107.710
H6 C2 H8 107.710 H7 C2 H8 107.710
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability