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All results from a given calculation for C2H6 (Ethane)

using model chemistry: MP4/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D3D 1A1g
Energy calculated at MP4/3-21G*
 hartrees
Energy at 0K-79.014315
Energy at 298.15K-79.020252
HF Energy-78.792901
Nuclear repulsion energy41.753459
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 MP4/3-21G*
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 3032 2862        
2 A1g 1477 1394        
3 A1g 953 900        
4 A1u 314 296        
5 A2u 3032 2862        
6 A2u 1482 1398        
7 Eg 3085 2912        
7 Eg 3085 2912        
8 Eg 1584 1495        
8 Eg 1583 1494        
9 Eg 1275 1204        
9 Eg 1275 1204        
10 Eu 3109 2934        
10 Eu 3109 2934        
11 Eu 1586 1497        
11 Eu 1586 1497        
12 Eu 860 812        
12 Eu 860 812        

Unscaled Zero Point Vibrational Energy (zpe) 16643.6 cm-1
Scaled (by 0.9438) Zero Point Vibrational Energy (zpe) 15708.3 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 MP4/3-21G*
ABC
2.63607 0.64839 0.64839

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4/3-21G*

Point Group is D3d

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.779
C2 0.000 0.000 -0.779
H3 0.000 1.028 1.167
H4 -0.891 -0.514 1.167
H5 0.891 -0.514 1.167
H6 0.000 -1.028 -1.167
H7 -0.891 0.514 -1.167
H8 0.891 0.514 -1.167

Atom - Atom Distances (Å)
  C1 C2 H3 H4 H5 H6 H7 H8
C11.55801.09921.09921.09922.20112.20112.2011
C21.55802.20112.20112.20111.09921.09921.0992
H31.09922.20111.78121.78123.11112.55072.5507
H41.09922.20111.78121.78122.55072.55073.1111
H51.09922.20111.78121.78122.55073.11112.5507
H62.20111.09923.11112.55072.55071.78121.7812
H72.20111.09922.55072.55073.11111.78121.7812
H82.20111.09922.55073.11112.55071.78121.7812

picture of Ethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H6 110.675 C1 C2 H7 110.675
C1 C2 H8 110.675 C2 C1 H3 110.675
C2 C1 H4 110.675 C2 C1 H5 110.675
H3 C1 H4 108.241 H3 C1 H5 108.241
H4 C1 H5 108.241 H6 C2 H7 108.241
H6 C2 H8 108.241 H7 C2 H8 108.241
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability