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All results from a given calculation for C2H6 (Ethane)

using model chemistry: CISD/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D3D 1A1g
Energy calculated at CISD/6-31G(2df,p)
 hartrees
Energy at 0K-79.585918
Energy at 298.15K-79.591870
HF Energy-79.241706
Nuclear repulsion energy42.336761
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 CISD/6-31G(2df,p)
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 3138 3138 0.00      
2 A1g 1484 1484 0.00      
3 A1g 1041 1041 0.00      
4 A1u 319 319 0.00      
5 A2u 3136 3136 45.25      
6 A2u 1460 1460 0.65      
7 Eg 3201 3201 0.00      
7 Eg 3201 3201 0.00      
8 Eg 1561 1561 0.00      
8 Eg 1561 1561 0.00      
9 Eg 1266 1266 0.00      
9 Eg 1266 1266 0.00      
10 Eu 3223 3223 52.92      
10 Eu 3223 3223 52.92      
11 Eu 1564 1564 6.64      
11 Eu 1564 1564 6.64      
12 Eu 845 845 3.68      
12 Eu 845 845 3.68      

Unscaled Zero Point Vibrational Energy (zpe) 16948.6 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 16948.6 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 CISD/6-31G(2df,p)
ABC
2.70735 0.66950 0.66950

See section I.F.4 to change rotational constant units
Geometric Data calculated at CISD/6-31G(2df,p)

Point Group is D3d

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.763
C2 0.000 0.000 -0.763
H3 0.000 1.015 1.157
H4 -0.879 -0.507 1.157
H5 0.879 -0.507 1.157
H6 0.000 -1.015 -1.157
H7 -0.879 0.507 -1.157
H8 0.879 0.507 -1.157

Atom - Atom Distances (Å)
  C1 C2 H3 H4 H5 H6 H7 H8
C11.52611.08851.08851.08852.17162.17162.1716
C21.52612.17162.17162.17161.08851.08851.0885
H31.08852.17161.75761.75763.07762.52642.5264
H41.08852.17161.75761.75762.52642.52643.0776
H51.08852.17161.75761.75762.52643.07762.5264
H62.17161.08853.07762.52642.52641.75761.7576
H72.17161.08852.52642.52643.07761.75761.7576
H82.17161.08852.52643.07762.52641.75761.7576

picture of Ethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H6 111.210 C1 C2 H7 111.210
C1 C2 H8 111.210 C2 C1 H3 111.210
C2 C1 H4 111.210 C2 C1 H5 111.210
H3 C1 H4 107.678 H3 C1 H5 107.678
H4 C1 H5 107.678 H6 C2 H7 107.678
H6 C2 H8 107.678 H7 C2 H8 107.678
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability