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All results from a given calculation for C2H6 (Ethane)

using model chemistry: QCISD(T)/6-31G**

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(T)/6-31G**
 hartrees
Energy at 0K-79.585584
Energy at 298.15K-79.591533
HF Energy-79.238079
Nuclear repulsion energy42.234654
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(T)/6-31G**
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 3095 2901        
2 A1g 1479 1386        
3 A1g 1032 967        
4 A1u 329 308        
5 A2u 3093 2899        
6 A2u 1450 1359        
7 Eg 3163 2965        
7 Eg 3163 2965        
8 Eg 1552 1455        
8 Eg 1551 1454        
9 Eg 1260 1181        
9 Eg 1260 1181        
10 Eu 3184 2985        
10 Eu 3184 2985        
11 Eu 1558 1460        
11 Eu 1557 1459        
12 Eu 837 785        
12 Eu 837 784        

Unscaled Zero Point Vibrational Energy (zpe) 16791.3 cm-1
Scaled (by 0.9373) Zero Point Vibrational Energy (zpe) 15738.5 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(T)/6-31G**
ABC
2.68836 0.66696 0.66696

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD(T)/6-31G**

Point Group is D3d

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.764
C2 0.000 0.000 -0.764
H3 0.000 1.018 1.158
H4 -0.882 -0.509 1.158
H5 0.882 -0.509 1.158
H6 0.000 -1.018 -1.158
H7 -0.882 0.509 -1.158
H8 0.882 0.509 -1.158

Atom - Atom Distances (Å)
  C1 C2 H3 H4 H5 H6 H7 H8
C11.52901.09181.09181.09182.17582.17582.1758
C21.52902.17582.17582.17581.09181.09181.0918
H31.09182.17581.76381.76383.08472.53062.5306
H41.09182.17581.76381.76382.53062.53063.0847
H51.09182.17581.76381.76382.53063.08472.5306
H62.17581.09183.08472.53062.53061.76381.7638
H72.17581.09182.53062.53063.08471.76381.7638
H82.17581.09182.53063.08472.53061.76381.7638

picture of Ethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H6 111.146 C1 C2 H7 111.146
C1 C2 H8 111.146 C2 C1 H3 111.146
C2 C1 H4 111.146 C2 C1 H5 111.146
H3 C1 H4 107.746 H3 C1 H5 107.746
H4 C1 H5 107.746 H6 C2 H7 107.746
H6 C2 H8 107.746 H7 C2 H8 107.746
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability