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All results from a given calculation for C2H6 (Ethane)

using model chemistry: QCISD(T)/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 QCISD(T)/6-31+G**
 hartrees
Energy at 0K-79.588235
Energy at 298.15K-79.594174
HF Energy-79.238572
Nuclear repulsion energy42.194567
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)/6-31+G**
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A1g 3084 2896        
2 A1g 1470 1380        
3 A1g 1025 963        
4 A1u 324 304        
5 A2u 3081 2893        
6 A2u 1443 1355        
7 Eg 3150 2958        
7 Eg 3150 2958        
8 Eg 1536 1442        
8 Eg 1535 1441        
9 Eg 1251 1175        
9 Eg 1251 1175        
10 Eu 3172 2978        
10 Eu 3172 2978        
11 Eu 1540 1446        
11 Eu 1539 1445        
12 Eu 833 782        
12 Eu 833 782        

Unscaled Zero Point Vibrational Energy (zpe) 16694.3 cm-1
Scaled (by 0.939) Zero Point Vibrational Energy (zpe) 15676.0 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)/6-31+G**
ABC
2.68390 0.66549 0.66549

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

Point Group is D3d

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.766
C2 0.000 0.000 -0.766
H3 0.000 1.019 1.159
H4 -0.883 -0.510 1.159
H5 0.883 -0.510 1.159
H6 0.000 -1.019 -1.159
H7 -0.883 0.510 -1.159
H8 0.883 0.510 -1.159

Atom - Atom Distances (Å)
  C1 C2 H3 H4 H5 H6 H7 H8
C11.53101.09261.09261.09262.17802.17802.1780
C21.53102.17802.17802.17801.09261.09261.0926
H31.09262.17801.76531.76533.08722.53272.5327
H41.09262.17801.76531.76532.53272.53273.0872
H51.09262.17801.76531.76532.53273.08722.5327
H62.17801.09263.08722.53272.53271.76531.7653
H72.17801.09262.53272.53273.08721.76531.7653
H82.17801.09262.53273.08722.53271.76531.7653

picture of Ethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H6 111.125 C1 C2 H7 111.125
C1 C2 H8 111.125 C2 C1 H3 111.125
C2 C1 H4 111.125 C2 C1 H5 111.125
H3 C1 H4 107.768 H3 C1 H5 107.768
H4 C1 H5 107.768 H6 C2 H7 107.768
H6 C2 H8 107.768 H7 C2 H8 107.768
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability