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All results from a given calculation for C2H6 (Ethane)

using model chemistry: QCISD/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/CEP-31G*
 hartrees
Energy at 0K-14.750756
Energy at 298.15K-14.756653
HF Energy-14.464422
Nuclear repulsion energy26.163783
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/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 3049 2908 0.00      
2 A1g 1456 1388 0.00      
3 A1g 1026 978 0.00      
4 A1u 311 296 0.00      
5 A2u 3043 2902 73.51      
6 A2u 1416 1351 1.32      
7 Eg 3107 2963 0.00      
7 Eg 3107 2963 0.00      
8 Eg 1509 1439 0.00      
8 Eg 1509 1439 0.00      
9 Eg 1228 1171 0.00      
9 Eg 1228 1171 0.00      
10 Eu 3129 2984 114.12      
10 Eu 3129 2984 114.12      
11 Eu 1510 1440 9.10      
11 Eu 1510 1440 9.10      
12 Eu 822 784 5.07      
12 Eu 822 784 5.07      

Unscaled Zero Point Vibrational Energy (zpe) 16454.4 cm-1
Scaled (by 0.9537) Zero Point Vibrational Energy (zpe) 15692.6 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/CEP-31G*
ABC
2.59851 0.64717 0.64717

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

Point Group is D3d

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.776
C2 0.000 0.000 -0.776
H3 0.000 1.036 1.174
H4 -0.897 -0.518 1.174
H5 0.897 -0.518 1.174
H6 0.000 -1.036 -1.174
H7 -0.897 0.518 -1.174
H8 0.897 0.518 -1.174

Atom - Atom Distances (Å)
  C1 C2 H3 H4 H5 H6 H7 H8
C11.55291.10951.10951.10952.20852.20852.2085
C21.55292.20852.20852.20851.10951.10951.1095
H31.10952.20851.79401.79403.13142.56652.5665
H41.10952.20851.79401.79402.56652.56653.1314
H51.10952.20851.79401.79402.56653.13142.5665
H62.20851.10953.13142.56652.56651.79401.7940
H72.20851.10952.56652.56653.13141.79401.7940
H82.20851.10952.56653.13142.56651.79401.7940

picture of Ethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H6 111.003 C1 C2 H7 111.003
C1 C2 H8 111.003 C2 C1 H3 111.003
C2 C1 H4 111.003 C2 C1 H5 111.003
H3 C1 H4 107.897 H3 C1 H5 107.897
H4 C1 H5 107.897 H6 C2 H7 107.897
H6 C2 H8 107.897 H7 C2 H8 107.897
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability