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All results from a given calculation for C2H6 (Ethane)

using model chemistry: CISD/6-31+G**

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/6-31+G**
 hartrees
Energy at 0K-79.551579
Energy at 298.15K-79.557547
HF Energy-79.238746
Nuclear repulsion energy42.366627
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/6-31+G**
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 3147 2901 0.00      
2 A1g 1504 1387 0.00      
3 A1g 1048 966 0.00      
4 A1u 327 301 0.00      
5 A2u 3143 2897 62.98      
6 A2u 1475 1359 0.75      
7 Eg 3211 2959 0.00      
7 Eg 3211 2959 0.00      
8 Eg 1568 1445 0.00      
8 Eg 1568 1445 0.00      
9 Eg 1278 1178 0.00      
9 Eg 1278 1178 0.00      
10 Eu 3233 2980 74.87      
10 Eu 3233 2980 74.87      
11 Eu 1572 1449 8.41      
11 Eu 1572 1449 8.41      
12 Eu 852 786 2.08      
12 Eu 852 786 2.08      

Unscaled Zero Point Vibrational Energy (zpe) 17034.8 cm-1
Scaled (by 0.9218) Zero Point Vibrational Energy (zpe) 15702.6 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/6-31+G**
ABC
2.70965 0.67052 0.67052

See section I.F.4 to change rotational constant units
Geometric Data calculated at CISD/6-31+G**

Point Group is D3d

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.763
C2 0.000 0.000 -0.763
H3 0.000 1.014 1.155
H4 -0.878 -0.507 1.155
H5 0.878 -0.507 1.155
H6 0.000 -1.014 -1.155
H7 -0.878 0.507 -1.155
H8 0.878 0.507 -1.155

Atom - Atom Distances (Å)
  C1 C2 H3 H4 H5 H6 H7 H8
C11.52531.08771.08771.08772.16972.16972.1697
C21.52532.16972.16972.16971.08771.08771.0877
H31.08772.16971.75681.75683.07482.52352.5235
H41.08772.16971.75681.75682.52352.52353.0748
H51.08772.16971.75681.75682.52353.07482.5235
H62.16971.08773.07482.52352.52351.75681.7568
H72.16971.08772.52352.52353.07481.75681.7568
H82.16971.08772.52353.07482.52351.75681.7568

picture of Ethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H6 111.163 C1 C2 H7 111.163
C1 C2 H8 111.163 C2 C1 H3 111.163
C2 C1 H4 111.163 C2 C1 H5 111.163
H3 C1 H4 107.728 H3 C1 H5 107.728
H4 C1 H5 107.728 H6 C2 H7 107.728
H6 C2 H8 107.728 H7 C2 H8 107.728
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability