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All results from a given calculation for C2H6 (Ethane)

using model chemistry: HF/cc-pCVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D3D 1A1g
Energy calculated at HF/cc-pCVDZ
 hartrees
Energy at 0K-79.235900
Energy at 298.15K-79.241926
HF Energy-79.235900
Nuclear repulsion energy42.267698
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 HF/cc-pCVDZ
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 3177 2911 0.00      
2 A1g 1541 1412 0.00      
3 A1g 1060 972 0.00      
4 A1u 339 311 0.00      
5 A2u 3167 2902 75.53      
6 A2u 1503 1377 0.02      
7 Eg 3230 2959 0.00      
7 Eg 3230 2959 0.00      
8 Eg 1597 1463 0.00      
8 Eg 1597 1463 0.00      
9 Eg 1314 1204 0.00      
9 Eg 1314 1204 0.00      
10 Eu 3255 2982 92.62      
10 Eu 3255 2982 92.62      
11 Eu 1600 1466 7.24      
11 Eu 1600 1466 7.24      
12 Eu 878 805 2.82      
12 Eu 878 805 2.82      

Unscaled Zero Point Vibrational Energy (zpe) 17266.4 cm-1
Scaled (by 0.9163) Zero Point Vibrational Energy (zpe) 15821.2 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 HF/cc-pCVDZ
ABC
2.69023 0.66894 0.66894

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

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 1.018 1.158
H4 -0.882 -0.509 1.158
H5 0.882 -0.509 1.158
H6 0.000 -1.018 -1.158
H7 -0.882 0.509 -1.158
H8 0.882 0.509 -1.158

Atom - Atom Distances (Å)
  C1 C2 H3 H4 H5 H6 H7 H8
C11.52511.09221.09221.09222.17392.17392.1739
C21.52512.17392.17392.17391.09221.09221.0922
H31.09222.17391.76321.76323.08402.53032.5303
H41.09222.17391.76321.76322.53032.53033.0840
H51.09222.17391.76321.76322.53033.08402.5303
H62.17391.09223.08402.53032.53031.76321.7632
H72.17391.09222.53032.53033.08401.76321.7632
H82.17391.09222.53033.08402.53031.76321.7632

picture of Ethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H6 111.243 C1 C2 H7 111.243
C1 C2 H8 111.243 C2 C1 H3 111.243
C2 C1 H4 111.243 C2 C1 H5 111.243
H3 C1 H4 107.643 H3 C1 H5 107.643
H4 C1 H5 107.643 H6 C2 H7 107.643
H6 C2 H8 107.643 H7 C2 H8 107.643
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/cc-pCVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.095      
2 C -0.095      
3 H 0.032      
4 H 0.032      
5 H 0.032      
6 H 0.032      
7 H 0.032      
8 H 0.032      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 0.000 0.000
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -14.900 0.000 0.000
y 0.000 -14.900 0.000
z 0.000 0.000 -15.618
Traceless
 xyz
x 0.359 0.000 0.000
y 0.000 0.359 0.000
z 0.000 0.000 -0.718
Polar
3z2-r2-1.437
x2-y20.000
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.415 0.000 0.000
y 0.000 3.415 0.000
z 0.000 0.000 3.747


<r2> (average value of r2) Å2
<r2> 30.700
(<r2>)1/2 5.541