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All results from a given calculation for C2H6 (Ethane)

using model chemistry: QCISD/daug-cc-pVTZ

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/daug-cc-pVTZ
 hartrees
Energy at 0K-79.666965
Energy at 298.15K-79.672882
HF Energy-79.260321
Nuclear repulsion energy42.262504
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/daug-cc-pVTZ
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 3050 3050 0.00      
2 A1g 1444 1444 0.00      
3 A1g 1020 1020 0.00      
4 A1u 311 311 0.00      
5 A2u 3049 3049 53.14      
6 A2u 1426 1426 0.63      
7 Eg 3106 3106 0.00      
7 Eg 3106 3106 0.00      
8 Eg 1526 1526 0.00      
8 Eg 1526 1526 0.00      
9 Eg 1238 1238 0.00      
9 Eg 1238 1238 0.00      
10 Eu 3129 3129 60.30      
10 Eu 3129 3129 60.30      
11 Eu 1527 1527 7.54      
11 Eu 1527 1527 7.54      
12 Eu 830 830 2.52      
12 Eu 830 830 2.52      

Unscaled Zero Point Vibrational Energy (zpe) 16504.2 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 16504.2 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/daug-cc-pVTZ
ABC
2.69267 0.66797 0.66797

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

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 -0.881 -0.509 1.158
H5 0.881 -0.509 1.158
H6 0.000 -1.018 -1.158
H7 -0.881 0.509 -1.158
H8 0.881 0.509 -1.158

Atom - Atom Distances (Å)
  C1 C2 H3 H4 H5 H6 H7 H8
C11.52741.09121.09121.09122.17452.17452.1745
C21.52742.17452.17452.17451.09121.09121.0912
H31.09122.17451.76241.76243.08312.52972.5297
H41.09122.17451.76241.76242.52972.52973.0831
H51.09122.17451.76241.76242.52973.08312.5297
H62.17451.09123.08312.52972.52971.76241.7624
H72.17451.09122.52972.52973.08311.76241.7624
H82.17451.09122.52973.08312.52971.76241.7624

picture of Ethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H6 111.182 C1 C2 H7 111.182
C1 C2 H8 111.182 C2 C1 H3 111.182
C2 C1 H4 111.182 C2 C1 H5 111.182
H3 C1 H4 107.708 H3 C1 H5 107.708
H4 C1 H5 107.708 H6 C2 H7 107.708
H6 C2 H8 107.708 H7 C2 H8 107.708
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability