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All results from a given calculation for C2H6 (Ethane)

using model chemistry: BLYP/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 BLYP/CEP-31G*
 hartrees
Energy at 0K-14.825559
Energy at 298.15K-14.831368
HF Energy-14.825559
Nuclear repulsion energy26.064943
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 BLYP/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 2964 2947 0.00      
2 A1g 1380 1373 0.00      
3 A1g 960 955 0.00      
4 A1u 289 287 0.00      
5 A2u 2963 2947 73.95      
6 A2u 1354 1347 1.83      
7 Eg 3008 2991 0.00      
7 Eg 3008 2991 0.00      
8 Eg 1463 1455 0.00      
8 Eg 1463 1455 0.00      
9 Eg 1171 1164 0.00      
9 Eg 1171 1164 0.00      
10 Eu 3035 3018 120.65      
10 Eu 3035 3018 120.68      
11 Eu 1469 1461 12.45      
11 Eu 1469 1461 12.44      
12 Eu 786 781 9.19      
12 Eu 786 781 9.19      

Unscaled Zero Point Vibrational Energy (zpe) 15884.8 cm-1
Scaled (by 0.9945) Zero Point Vibrational Energy (zpe) 15797.4 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 BLYP/CEP-31G*
ABC
2.59404 0.63992 0.63992

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

Point Group is D3d

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.781
C2 0.000 0.000 -0.781
H3 0.000 1.037 1.183
H4 -0.898 -0.518 1.183
H5 0.898 -0.518 1.183
H6 0.000 -1.037 -1.183
H7 -0.898 0.518 -1.183
H8 0.898 0.518 -1.183

Atom - Atom Distances (Å)
  C1 C2 H3 H4 H5 H6 H7 H8
C11.56161.11191.11191.11192.22062.22062.2206
C21.56162.22062.22062.22061.11191.11191.1119
H31.11192.22061.79561.79563.14582.58302.5830
H41.11192.22061.79561.79562.58302.58303.1458
H51.11192.22061.79561.79562.58303.14582.5830
H62.22061.11193.14582.58302.58301.79561.7956
H72.22061.11192.58302.58303.14581.79561.7956
H82.22061.11192.58303.14582.58301.79561.7956

picture of Ethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H6 111.201 C1 C2 H7 111.201
C1 C2 H8 111.201 C2 C1 H3 111.201
C2 C1 H4 111.201 C2 C1 H5 111.201
H3 C1 H4 107.687 H3 C1 H5 107.687
H4 C1 H5 107.687 H6 C2 H7 107.687
H6 C2 H8 107.687 H7 C2 H8 107.687
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/CEP-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.449      
2 C -0.449      
3 H 0.150      
4 H 0.150      
5 H 0.150      
6 H 0.150      
7 H 0.150      
8 H 0.150      


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 -14.451 0.000 0.000
y 0.000 -14.451 0.000
z 0.000 0.000 -15.265
Traceless
 xyz
x 0.407 0.000 0.000
y 0.000 0.407 0.000
z 0.000 0.000 -0.814
Polar
3z2-r2-1.629
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 3.185 0.000 0.000
y 0.000 3.185 0.000
z 0.000 0.000 3.866


<r2> (average value of r2) Å2
<r2> 28.917
(<r2>)1/2 5.377