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All results from a given calculation for C2H6 (Ethane)

using model chemistry: QCISD/6-311+G(3df,2pd)

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/6-311+G(3df,2pd)
 hartrees
Energy at 0K-79.661134
Energy at 298.15K-79.667057
HF Energy-79.258544
Nuclear repulsion energy42.276995
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/6-311+G(3df,2pd)
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 3048 3048 0.00      
2 A1g 1445 1445 0.00      
3 A1g 1023 1023 0.00      
4 A1u 314 314 0.00      
5 A2u 3045 3045 52.24      
6 A2u 1425 1425 0.78      
7 Eg 3106 3106 0.00      
7 Eg 3106 3106 0.00      
8 Eg 1523 1523 0.00      
8 Eg 1523 1523 0.00      
9 Eg 1236 1236 0.00      
9 Eg 1236 1236 0.00      
10 Eu 3129 3129 60.28      
10 Eu 3129 3129 60.28      
11 Eu 1524 1524 7.80      
11 Eu 1524 1524 7.80      
12 Eu 831 831 2.58      
12 Eu 831 831 2.58      

Unscaled Zero Point Vibrational Energy (zpe) 16498.5 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 16498.5 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/6-311+G(3df,2pd)
ABC
2.69571 0.66827 0.66827

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/6-311+G(3df,2pd)

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 1.017 1.158
H4 -0.881 -0.508 1.158
H5 0.881 -0.508 1.158
H6 0.000 -1.017 -1.158
H7 -0.881 0.508 -1.158
H8 0.881 0.508 -1.158

Atom - Atom Distances (Å)
  C1 C2 H3 H4 H5 H6 H7 H8
C11.52711.09071.09071.09072.17392.17392.1739
C21.52712.17392.17392.17391.09071.09071.0907
H31.09072.17391.76141.76143.08212.52922.5292
H41.09072.17391.76141.76142.52922.52923.0821
H51.09072.17391.76141.76142.52923.08212.5292
H62.17391.09073.08212.52922.52921.76141.7614
H72.17391.09072.52922.52923.08211.76141.7614
H82.17391.09072.52923.08212.52921.76141.7614

picture of Ethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H6 111.195 C1 C2 H7 111.195
C1 C2 H8 111.195 C2 C1 H3 111.195
C2 C1 H4 111.195 C2 C1 H5 111.195
H3 C1 H4 107.694 H3 C1 H5 107.694
H4 C1 H5 107.694 H6 C2 H7 107.694
H6 C2 H8 107.694 H7 C2 H8 107.694
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability