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All results from a given calculation for C2H6 (Ethane)

using model chemistry: QCISD(TQ)/CEP-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)/CEP-31G*
 hartrees
Energy at 0K-14.757219
Energy at 298.15K-14.763108
HF Energy-14.464213
Nuclear repulsion energy26.136908
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)/CEP-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 3035 3035        
2 A1g 1447 1447        
3 A1g 1018 1018        
4 A1u 310 310        
5 A2u 3030 3030        
6 A2u 1408 1408        
7 Eg 3094 3094        
7 Eg 3094 3094        
8 Eg 1502 1502        
8 Eg 1502 1502        
9 Eg 1222 1222        
9 Eg 1222 1222        
10 Eu 3116 3116        
10 Eu 3116 3116        
11 Eu 1504 1504        
11 Eu 1503 1503        
12 Eu 817 817        
12 Eu 817 817        

Unscaled Zero Point Vibrational Energy (zpe) 16377.6 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 16377.6 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)/CEP-31G*
ABC
2.59155 0.64564 0.64564

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

Point Group is D3d

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.778
C2 0.000 0.000 -0.778
H3 0.000 1.037 1.175
H4 -0.898 -0.519 1.175
H5 0.898 -0.519 1.175
H6 0.000 -1.037 -1.175
H7 -0.898 0.519 -1.175
H8 0.898 0.519 -1.175

Atom - Atom Distances (Å)
  C1 C2 H3 H4 H5 H6 H7 H8
C11.55501.11071.11071.11072.21092.21092.2109
C21.55502.21092.21092.21091.11071.11071.1107
H31.11072.21091.79641.79643.13452.56872.5687
H41.11072.21091.79641.79642.56872.56873.1345
H51.11072.21091.79641.79642.56873.13452.5687
H62.21091.11073.13452.56872.56871.79641.7964
H72.21091.11072.56872.56873.13451.79641.7964
H82.21091.11072.56873.13452.56871.79641.7964

picture of Ethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H6 110.968 C1 C2 H7 110.968
C1 C2 H8 110.968 C2 C1 H3 110.968
C2 C1 H4 110.968 C2 C1 H5 110.968
H3 C1 H4 107.934 H3 C1 H5 107.934
H4 C1 H5 107.934 H6 C2 H7 107.934
H6 C2 H8 107.934 H7 C2 H8 107.934
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability