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All results from a given calculation for C2H6 (Ethane)

using model chemistry: CISD/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 CISD/cc-pVQZ
 hartrees
Energy at 0K-79.647013
Energy at 298.15K-79.652963
HF Energy-79.265298
Nuclear repulsion energy42.500457
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/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 3117 3117 0.00      
2 A1g 1476 1476 0.00      
3 A1g 1041 1041 0.00      
4 A1u 314 314 0.00      
5 A2u 3115 3115 52.54      
6 A2u 1453 1453 1.13      
7 Eg 3174 3174 0.00      
7 Eg 3174 3174 0.00      
8 Eg 1553 1553 0.00      
8 Eg 1553 1553 0.00      
9 Eg 1264 1264 0.00      
9 Eg 1264 1264 0.00      
10 Eu 3198 3198 60.38      
10 Eu 3198 3198 60.39      
11 Eu 1555 1555 8.42      
11 Eu 1555 1555 8.42      
12 Eu 846 846 2.94      
12 Eu 846 846 2.94      

Unscaled Zero Point Vibrational Energy (zpe) 16846.6 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 16846.6 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/cc-pVQZ
ABC
2.72757 0.67483 0.67483

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

Point Group is D3d

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.760
C2 0.000 0.000 -0.760
H3 0.000 1.011 1.152
H4 -0.876 -0.505 1.152
H5 0.876 -0.505 1.152
H6 0.000 -1.011 -1.152
H7 -0.876 0.505 -1.152
H8 0.876 0.505 -1.152

Atom - Atom Distances (Å)
  C1 C2 H3 H4 H5 H6 H7 H8
C11.51991.08451.08451.08452.16312.16312.1631
C21.51992.16312.16312.16311.08451.08451.0845
H31.08452.16311.75111.75113.06592.51662.5166
H41.08452.16311.75111.75112.51662.51663.0659
H51.08452.16311.75111.75112.51663.06592.5166
H62.16311.08453.06592.51662.51661.75111.7511
H72.16311.08452.51662.51663.06591.75111.7511
H82.16311.08452.51663.06592.51661.75111.7511

picture of Ethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H6 111.212 C1 C2 H7 111.212
C1 C2 H8 111.212 C2 C1 H3 111.212
C2 C1 H4 111.212 C2 C1 H5 111.212
H3 C1 H4 107.676 H3 C1 H5 107.676
H4 C1 H5 107.676 H6 C2 H7 107.676
H6 C2 H8 107.676 H7 C2 H8 107.676
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability