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All results from a given calculation for C2H6 (Ethane)

using model chemistry: QCISD/cc-pVQZ

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/cc-pVQZ
 hartrees
Energy at 0K-79.684515
Energy at 298.15K-79.690435
HF Energy-79.265176
Nuclear repulsion energy42.340213
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/cc-pVQZ
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 3057 3057 0.00      
2 A1g 1445 1445 0.00      
3 A1g 1024 1024 0.00      
4 A1u 308 308 0.00      
5 A2u 3056 3056 52.14      
6 A2u 1424 1424 0.94      
7 Eg 3114 3114 0.00      
7 Eg 3114 3114 0.00      
8 Eg 1523 1523 0.00      
8 Eg 1523 1523 0.00      
9 Eg 1238 1238 0.00      
9 Eg 1238 1238 0.00      
10 Eu 3137 3137 59.71      
10 Eu 3137 3137 59.71      
11 Eu 1525 1525 7.88      
11 Eu 1525 1525 7.88      
12 Eu 829 829 2.78      
12 Eu 829 829 2.78      

Unscaled Zero Point Vibrational Energy (zpe) 16523.1 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 16523.1 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/cc-pVQZ
ABC
2.70325 0.67047 0.67047

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/cc-pVQZ

Point Group is D3d

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.762
C2 0.000 0.000 -0.762
H3 0.000 1.016 1.156
H4 -0.879 -0.508 1.156
H5 0.879 -0.508 1.156
H6 0.000 -1.016 -1.156
H7 -0.879 0.508 -1.156
H8 0.879 0.508 -1.156

Atom - Atom Distances (Å)
  C1 C2 H3 H4 H5 H6 H7 H8
C11.52421.08941.08941.08942.17072.17072.1707
C21.52422.17072.17072.17071.08941.08941.0894
H31.08942.17071.75891.75893.07802.52592.5259
H41.08942.17071.75891.75892.52592.52593.0780
H51.08942.17071.75891.75892.52593.07802.5259
H62.17071.08943.07802.52592.52591.75891.7589
H72.17071.08942.52592.52593.07801.75891.7589
H82.17071.08942.52593.07802.52591.75891.7589

picture of Ethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H6 111.220 C1 C2 H7 111.220
C1 C2 H8 111.220 C2 C1 H3 111.220
C2 C1 H4 111.220 C2 C1 H5 111.220
H3 C1 H4 107.667 H3 C1 H5 107.667
H4 C1 H5 107.667 H6 C2 H7 107.667
H6 C2 H8 107.667 H7 C2 H8 107.667
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability