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All results from a given calculation for C2H6 (Ethane)

using model chemistry: MP4/CEP-121G

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/CEP-121G
 hartrees
Energy at 0K-14.658176
Energy at 298.15K-14.664079
HF Energy-14.437224
Nuclear repulsion energy26.093895
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/CEP-121G
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 2918 2754        
2 A1g 1443 1362        
3 A1g 982 927        
4 A1u 309 291        
5 A2u 2909 2746        
6 A2u 1431 1351        
7 Eg 2992 2824        
7 Eg 2992 2824        
8 Eg 1492 1408        
8 Eg 1491 1407        
9 Eg 1230 1161        
9 Eg 1230 1161        
10 Eu 3018 2849        
10 Eu 3018 2848        
11 Eu 1506 1421        
11 Eu 1505 1421        
12 Eu 808 763        
12 Eu 808 763        

Unscaled Zero Point Vibrational Energy (zpe) 16042.1 cm-1
Scaled (by 0.9438) Zero Point Vibrational Energy (zpe) 15140.5 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 MP4/CEP-121G
ABC
2.60307 0.63831 0.63831

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4/CEP-121G

Point Group is D3d

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.784
C2 0.000 0.000 -0.784
H3 0.000 1.035 1.180
H4 -0.896 -0.517 1.180
H5 0.896 -0.517 1.180
H6 0.000 -1.035 -1.180
H7 -0.896 0.517 -1.180
H8 0.896 0.517 -1.180

Atom - Atom Distances (Å)
  C1 C2 H3 H4 H5 H6 H7 H8
C11.56781.10821.10821.10822.22012.22012.2201
C21.56782.22012.22012.22011.10821.10821.1082
H31.10822.22011.79251.79253.13942.57742.5774
H41.10822.22011.79251.79252.57742.57743.1394
H51.10822.22011.79251.79252.57743.13942.5774
H62.22011.10823.13942.57742.57741.79251.7925
H72.22011.10822.57742.57743.13941.79251.7925
H82.22011.10822.57743.13942.57741.79251.7925

picture of Ethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H6 110.956 C1 C2 H7 110.956
C1 C2 H8 110.956 C2 C1 H3 110.956
C2 C1 H4 110.956 C2 C1 H5 110.956
H3 C1 H4 107.946 H3 C1 H5 107.946
H4 C1 H5 107.946 H6 C2 H7 107.946
H6 C2 H8 107.946 H7 C2 H8 107.946
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability