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All results from a given calculation for C2H6 (Ethane)

using model chemistry: MP4/STO-3G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D3D 1A1g
Energy calculated at MP4/STO-3G
 hartrees
Energy at 0K-78.449361
Energy at 298.15K-78.455204
HF Energy-78.302948
Nuclear repulsion energy41.479669
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 MP4/STO-3G
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 3298 3298        
2 A1g 1613 1613        
3 A1g 1103 1103        
4 A1u 293 293        
5 A2u 3299 3299        
6 A2u 1579 1579        
7 Eg 3455 3455        
7 Eg 3455 3455        
8 Eg 1693 1693        
8 Eg 1693 1693        
9 Eg 1345 1345        
9 Eg 1345 1345        
10 Eu 3467 3467        
10 Eu 3467 3467        
11 Eu 1709 1709        
11 Eu 1709 1709        
12 Eu 903 903        
12 Eu 903 903        

Unscaled Zero Point Vibrational Energy (zpe) 18164.8 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 18164.8 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 MP4/STO-3G
ABC
2.58555 0.64303 0.64303

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4/STO-3G

Point Group is D3d

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.781
C2 0.000 0.000 -0.781
H3 0.000 1.038 1.174
H4 -0.899 -0.519 1.174
H5 0.899 -0.519 1.174
H6 0.000 -1.038 -1.174
H7 -0.899 0.519 -1.174
H8 0.899 0.519 -1.174

Atom - Atom Distances (Å)
  C1 C2 H3 H4 H5 H6 H7 H8
C11.56141.11021.11021.11022.21302.21302.2130
C21.56142.21302.21302.21301.11021.11021.1102
H31.11022.21301.79851.79853.13402.56662.5666
H41.11022.21301.79851.79852.56662.56663.1340
H51.11022.21301.79851.79852.56663.13402.5666
H62.21301.11023.13402.56662.56661.79851.7985
H72.21301.11022.56662.56663.13401.79851.7985
H82.21301.11022.56663.13402.56661.79851.7985

picture of Ethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H6 110.725 C1 C2 H7 110.725
C1 C2 H8 110.725 C2 C1 H3 110.725
C2 C1 H4 110.725 C2 C1 H5 110.725
H3 C1 H4 108.189 H3 C1 H5 108.189
H4 C1 H5 108.189 H6 C2 H7 108.189
H6 C2 H8 108.189 H7 C2 H8 108.189
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability