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All results from a given calculation for C2H6 (Ethane)

using model chemistry: QCISD(TQ)/6-311G**

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)/6-311G**
 hartrees
Energy at 0K-79.616118
Energy at 298.15K-79.622053
HF Energy-79.251188
Nuclear repulsion energy42.050918
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)/6-311G**
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 3041 3041        
2 A1g 1444 1444        
3 A1g 1018 1018        
4 A1u 326 326        
5 A2u 3038 3038        
6 A2u 1416 1416        
7 Eg 3099 3099        
7 Eg 3099 3099        
8 Eg 1511 1511        
8 Eg 1511 1511        
9 Eg 1235 1235        
9 Eg 1235 1235        
10 Eu 3122 3122        
10 Eu 3122 3122        
11 Eu 1516 1516        
11 Eu 1515 1515        
12 Eu 826 826        
12 Eu 826 826        

Unscaled Zero Point Vibrational Energy (zpe) 16448.5 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 16448.5 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 QCISD(TQ)/6-311G**
ABC
2.65995 0.66182 0.66182

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD(TQ)/6-311G**

Point Group is D3d

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.767
C2 0.000 0.000 -0.767
H3 0.000 1.024 1.162
H4 -0.887 -0.512 1.162
H5 0.887 -0.512 1.162
H6 0.000 -1.024 -1.162
H7 -0.887 0.512 -1.162
H8 0.887 0.512 -1.162

Atom - Atom Distances (Å)
  C1 C2 H3 H4 H5 H6 H7 H8
C11.53501.09721.09721.09722.18442.18442.1844
C21.53502.18442.18442.18441.09721.09721.0972
H31.09722.18441.77321.77323.09752.53972.5397
H41.09722.18441.77321.77322.53972.53973.0975
H51.09722.18441.77321.77322.53973.09752.5397
H62.18441.09723.09752.53972.53971.77321.7732
H72.18441.09722.53972.53973.09751.77321.7732
H82.18441.09722.53973.09752.53971.77321.7732

picture of Ethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H6 111.081 C1 C2 H7 111.081
C1 C2 H8 111.081 C2 C1 H3 111.081
C2 C1 H4 111.081 C2 C1 H5 111.081
H3 C1 H4 107.814 H3 C1 H5 107.814
H4 C1 H5 107.814 H6 C2 H7 107.814
H6 C2 H8 107.814 H7 C2 H8 107.814
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability