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All results from a given calculation for C2H6 (Ethane)

using model chemistry: QCISD(T)/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(T)/6-311G*
 hartrees
Energy at 0K-79.568157
Energy at 298.15K-79.574076
HF Energy-79.242180
Nuclear repulsion energy42.047309
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(T)/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 3024 2911        
2 A1g 1452 1398        
3 A1g 1019 981        
4 A1u 316 304        
5 A2u 3021 2908        
6 A2u 1430 1377        
7 Eg 3082 2967        
7 Eg 3082 2967        
8 Eg 1525 1468        
8 Eg 1524 1468        
9 Eg 1237 1191        
9 Eg 1237 1191        
10 Eu 3104 2989        
10 Eu 3104 2989        
11 Eu 1529 1472        
11 Eu 1528 1471        
12 Eu 825 795        
12 Eu 825 795        

Unscaled Zero Point Vibrational Energy (zpe) 16431.8 cm-1
Scaled (by 0.9628) Zero Point Vibrational Energy (zpe) 15820.5 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(T)/6-311G*
ABC
2.66320 0.66168 0.66168

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD(T)/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 1.023 1.164
H4 -0.886 -0.512 1.164
H5 0.886 -0.512 1.164
H6 0.000 -1.023 -1.164
H7 -0.886 0.512 -1.164
H8 0.886 0.512 -1.164

Atom - Atom Distances (Å)
  C1 C2 H3 H4 H5 H6 H7 H8
C11.53361.09771.09771.09772.18562.18562.1856
C21.53362.18562.18562.18561.09771.09771.0977
H31.09772.18561.77211.77213.10022.54382.5438
H41.09772.18561.77211.77212.54382.54383.1002
H51.09772.18561.77211.77212.54383.10022.5438
H62.18561.09773.10022.54382.54381.77211.7721
H72.18561.09772.54382.54383.10021.77211.7721
H82.18561.09772.54383.10022.54381.77211.7721

picture of Ethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H6 111.239 C1 C2 H7 111.239
C1 C2 H8 111.239 C2 C1 H3 111.239
C2 C1 H4 111.239 C2 C1 H5 111.239
H3 C1 H4 107.647 H3 C1 H5 107.647
H4 C1 H5 107.647 H6 C2 H7 107.647
H6 C2 H8 107.647 H7 C2 H8 107.647
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability