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All results from a given calculation for C2H6 (Ethane)

using model chemistry: MP2/cc-pCVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D3D 1A1g
Energy calculated at MP2/cc-pCVTZ
 hartrees
Energy at 0K-79.632195
Energy at 298.15K-79.638128
HF Energy-79.260347
Nuclear repulsion energy42.379266
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 MP2/cc-pCVTZ
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 3081 2937 0.00      
2 A1g 1430 1364 0.00      
3 A1g 1028 980 0.00      
4 A1u 315 301 0.00      
5 A2u 3083 2939 47.54      
6 A2u 1411 1345 1.35      
7 Eg 3156 3008 0.00      
7 Eg 3156 3008 0.00      
8 Eg 1523 1452 0.00      
8 Eg 1523 1452 0.00      
9 Eg 1230 1172 0.00      
9 Eg 1230 1172 0.00      
10 Eu 3178 3029 47.83      
10 Eu 3178 3029 47.83      
11 Eu 1523 1452 8.57      
11 Eu 1523 1452 8.57      
12 Eu 827 788 3.39      
12 Eu 827 788 3.39      

Unscaled Zero Point Vibrational Energy (zpe) 16611.3 cm-1
Scaled (by 0.9532) Zero Point Vibrational Energy (zpe) 15833.9 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 MP2/cc-pCVTZ
ABC
2.70934 0.67150 0.67150

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/cc-pCVTZ

Point Group is D3d

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.762
C2 0.000 0.000 -0.762
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
C11.52321.08811.08811.08812.16892.16892.1689
C21.52322.16892.16892.16891.08811.08811.0881
H31.08812.16891.75691.75693.07502.52372.5237
H41.08812.16891.75691.75702.52372.52373.0750
H51.08812.16891.75691.75702.52373.07502.5237
H62.16891.08813.07502.52372.52371.75691.7569
H72.16891.08812.52372.52373.07501.75691.7570
H82.16891.08812.52373.07502.52371.75691.7570

picture of Ethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H6 111.219 C1 C2 H7 111.219
C1 C2 H8 111.219 C2 C1 H3 111.219
C2 C1 H4 111.219 C2 C1 H5 111.219
H3 C1 H4 107.668 H3 C1 H5 107.668
H4 C1 H5 107.668 H6 C2 H7 107.668
H6 C2 H8 107.668 H7 C2 H8 107.668
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability