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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-79.421283
Energy at 298.15K-79.427218
HF Energy-79.195764
Nuclear repulsion energy41.709786
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 2996 2857        
2 A1g 1472 1403        
3 A1g 999 952        
4 A1u 315 300        
5 A2u 2992 2854        
6 A2u 1469 1401        
7 Eg 3052 2910        
7 Eg 3052 2910        
8 Eg 1546 1474        
8 Eg 1545 1474        
9 Eg 1266 1207        
9 Eg 1266 1207        
10 Eu 3075 2933        
10 Eu 3075 2933        
11 Eu 1551 1480        
11 Eu 1551 1479        
12 Eu 847 808        
12 Eu 847 808        

Unscaled Zero Point Vibrational Energy (zpe) 16457.5 cm-1
Scaled (by 0.9537) Zero Point Vibrational Energy (zpe) 15695.6 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 QCISD(T)/6-31G
ABC
2.62601 0.64976 0.64976

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 0.775
C2 0.000 0.000 -0.775
H3 0.000 1.030 1.172
H4 -0.892 -0.515 1.172
H5 0.892 -0.515 1.172
H6 0.000 -1.030 -1.172
H7 -0.892 0.515 -1.172
H8 0.892 0.515 -1.172

Atom - Atom Distances (Å)
  C1 C2 H3 H4 H5 H6 H7 H8
C11.55041.10431.10431.10432.20342.20342.2034
C21.55042.20342.20342.20341.10431.10431.1043
H31.10432.20341.78461.78463.12182.56142.5614
H41.10432.20341.78461.78462.56142.56143.1218
H51.10432.20341.78461.78462.56143.12182.5614
H62.20341.10433.12182.56142.56141.78461.7846
H72.20341.10432.56142.56143.12181.78461.7846
H82.20341.10432.56143.12182.56141.78461.7846

picture of Ethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H6 111.087 C1 C2 H7 111.087
C1 C2 H8 111.087 C2 C1 H3 111.087
C2 C1 H4 111.087 C2 C1 H5 111.087
H3 C1 H4 107.808 H3 C1 H5 107.808
H4 C1 H5 107.808 H6 C2 H7 107.808
H6 C2 H8 107.808 H7 C2 H8 107.808
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability