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All results from a given calculation for C2H6 (Ethane)

using model chemistry: QCISD/SDD

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/SDD
 hartrees
Energy at 0K-79.417743
Energy at 298.15K-79.423647
HF Energy-79.203739
Nuclear repulsion energy41.455605
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/SDD
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 2977 2839 0.00      
2 A1g 1450 1383 0.00      
3 A1g 988 942 0.00      
4 A1u 310 295 0.00      
5 A2u 2970 2832 73.25      
6 A2u 1444 1377 6.86      
7 Eg 3043 2902 0.00      
7 Eg 3043 2902 0.00      
8 Eg 1517 1446 0.00      
8 Eg 1517 1446 0.00      
9 Eg 1239 1182 0.00      
9 Eg 1239 1182 0.00      
10 Eu 3067 2925 107.65      
10 Eu 3067 2925 107.65      
11 Eu 1521 1451 11.10      
11 Eu 1521 1451 11.10      
12 Eu 833 795 6.26      
12 Eu 833 795 6.26      

Unscaled Zero Point Vibrational Energy (zpe) 16288.9 cm-1
Scaled (by 0.9537) Zero Point Vibrational Energy (zpe) 15534.8 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/SDD
ABC
2.59966 0.64024 0.64024

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

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
C11.56441.10891.10891.10892.21772.21772.2177
C21.56442.21772.21772.21771.10891.10891.1089
H31.10892.21771.79361.79363.13832.57522.5752
H41.10892.21771.79361.79362.57522.57523.1383
H51.10892.21771.79361.79362.57523.13832.5752
H62.21771.10893.13832.57522.57521.79361.7936
H72.21771.10892.57522.57523.13831.79361.7936
H82.21771.10892.57523.13832.57521.79361.7936

picture of Ethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H6 110.962 C1 C2 H7 110.962
C1 C2 H8 110.962 C2 C1 H3 110.962
C2 C1 H4 110.962 C2 C1 H5 110.962
H3 C1 H4 107.940 H3 C1 H5 107.940
H4 C1 H5 107.940 H6 C2 H7 107.940
H6 C2 H8 107.940 H7 C2 H8 107.940
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability