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All results from a given calculation for C2H6 (Ethane)

using model chemistry: B3PW91/CEP-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 B3PW91/CEP-31G*
 hartrees
Energy at 0K-14.949332
Energy at 298.15K-14.955198
HF Energy-14.949332
Nuclear repulsion energy26.289251
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 B3PW91/CEP-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 3061 2930 0.00      
2 A1g 1426 1365 0.00      
3 A1g 1017 974 0.00      
4 A1u 301 288 0.00      
5 A2u 3058 2928 74.50      
6 A2u 1387 1327 2.48      
7 Eg 3121 2988 0.00      
7 Eg 3121 2988 0.00      
8 Eg 1501 1437 0.00      
8 Eg 1501 1437 0.00      
9 Eg 1203 1151 0.00      
9 Eg 1203 1151 0.00      
10 Eu 3146 3012 109.15      
10 Eu 3146 3012 109.19      
11 Eu 1504 1440 12.97      
11 Eu 1504 1440 12.97      
12 Eu 807 773 8.19      
12 Eu 807 773 8.18      

Unscaled Zero Point Vibrational Energy (zpe) 16405.8 cm-1
Scaled (by 0.9573) Zero Point Vibrational Energy (zpe) 15705.3 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 B3PW91/CEP-31G*
ABC
2.63228 0.65277 0.65277

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/CEP-31G*

Point Group is D3d

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.772
C2 0.000 0.000 -0.772
H3 0.000 1.029 1.172
H4 -0.891 -0.515 1.172
H5 0.891 -0.515 1.172
H6 0.000 -1.029 -1.172
H7 -0.891 0.515 -1.172
H8 0.891 0.515 -1.172

Atom - Atom Distances (Å)
  C1 C2 H3 H4 H5 H6 H7 H8
C11.54481.10391.10391.10392.19982.19982.1998
C21.54482.19982.19982.19981.10391.10391.1039
H31.10392.19981.78251.78253.11922.55982.5598
H41.10392.19981.78251.78252.55982.55983.1192
H51.10392.19981.78251.78252.55983.11922.5598
H62.19981.10393.11922.55982.55981.78251.7825
H72.19981.10392.55982.55983.11921.78251.7825
H82.19981.10392.55983.11922.55981.78251.7825

picture of Ethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H6 111.216 C1 C2 H7 111.216
C1 C2 H8 111.216 C2 C1 H3 111.216
C2 C1 H4 111.216 C2 C1 H5 111.216
H3 C1 H4 107.671 H3 C1 H5 107.671
H4 C1 H5 107.671 H6 C2 H7 107.671
H6 C2 H8 107.671 H7 C2 H8 107.671
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/CEP-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.431      
2 C -0.431      
3 H 0.144      
4 H 0.144      
5 H 0.144      
6 H 0.144      
7 H 0.144      
8 H 0.144      


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 -14.358 0.000 0.000
y 0.000 -14.358 0.000
z 0.000 0.000 -15.185
Traceless
 xyz
x 0.413 0.000 0.000
y 0.000 0.413 0.000
z 0.000 0.000 -0.826
Polar
3z2-r2-1.653
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 3.117 0.000 0.000
y 0.000 3.117 0.000
z 0.000 0.000 3.710


<r2> (average value of r2) Å2
<r2> 28.507
(<r2>)1/2 5.339