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All results from a given calculation for C2H6 (Ethane)

using model chemistry: CCSD/LANL2DZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D3D 1A1g
Energy calculated at CCSD/LANL2DZ
 hartrees
Energy at 0K-79.416293
Energy at 298.15K-79.422196
HF Energy-79.203323
Nuclear repulsion energy41.448194
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 CCSD/LANL2DZ
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 2979 2809 0.00      
2 A1g 1450 1368 0.00      
3 A1g 988 932 0.00      
4 A1u 309 292 0.00      
5 A2u 2972 2802 73.69      
6 A2u 1444 1362 6.96      
7 Eg 3044 2871 0.00      
7 Eg 3044 2871 0.00      
8 Eg 1516 1430 0.00      
8 Eg 1516 1430 0.00      
9 Eg 1239 1169 0.00      
9 Eg 1239 1169 0.00      
10 Eu 3068 2893 108.16      
10 Eu 3068 2893 108.16      
11 Eu 1520 1434 11.13      
11 Eu 1520 1434 11.13      
12 Eu 834 786 6.25      
12 Eu 834 786 6.25      

Unscaled Zero Point Vibrational Energy (zpe) 16292.4 cm-1
Scaled (by 0.9431) Zero Point Vibrational Energy (zpe) 15365.4 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 CCSD/LANL2DZ
ABC
2.59907 0.63997 0.63997

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD/LANL2DZ

Point Group is D3d

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.782
C2 0.000 0.000 -0.782
H3 0.000 1.036 1.179
H4 -0.897 -0.518 1.179
H5 0.897 -0.518 1.179
H6 0.000 -1.036 -1.179
H7 -0.897 0.518 -1.179
H8 0.897 0.518 -1.179

Atom - Atom Distances (Å)
  C1 C2 H3 H4 H5 H6 H7 H8
C11.56471.10911.10911.10912.21822.21822.2182
C21.56472.21822.21822.21821.10911.10911.1091
H31.10912.21821.79381.79383.13892.57582.5758
H41.10912.21821.79381.79382.57582.57583.1389
H51.10912.21821.79381.79382.57583.13892.5758
H62.21821.10913.13892.57582.57581.79381.7938
H72.21821.10912.57582.57583.13891.79381.7938
H82.21821.10912.57583.13892.57581.79381.7938

picture of Ethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H6 110.966 C1 C2 H7 110.966
C1 C2 H8 110.966 C2 C1 H3 110.966
C2 C1 H4 110.966 C2 C1 H5 110.966
H3 C1 H4 107.936 H3 C1 H5 107.936
H4 C1 H5 107.936 H6 C2 H7 107.936
H6 C2 H8 107.936 H7 C2 H8 107.936
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability