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All results from a given calculation for C2H6 (Ethane)

using model chemistry: PBEPBE/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 PBEPBE/CEP-31G*
 hartrees
Energy at 0K-14.887716
Energy at 298.15K-14.893533
HF Energy-14.887716
Nuclear repulsion energy26.138191
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 PBEPBE/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 2989 2989 0.00      
2 A1g 1376 1376 0.00      
3 A1g 995 995 0.00      
4 A1u 294 294 0.00      
5 A2u 2989 2989 66.24      
6 A2u 1342 1342 4.03      
7 Eg 3051 3051 0.00      
7 Eg 3051 3051 0.00      
8 Eg 1455 1455 0.00      
8 Eg 1455 1455 0.00      
9 Eg 1163 1163 0.00      
9 Eg 1163 1163 0.00      
10 Eu 3076 3076 95.26      
10 Eu 3076 3076 95.26      
11 Eu 1459 1459 15.10      
11 Eu 1459 1459 15.09      
12 Eu 783 783 10.48      
12 Eu 783 783 10.48      

Unscaled Zero Point Vibrational Energy (zpe) 15979.0 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 15979.0 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 PBEPBE/CEP-31G*
ABC
2.59886 0.64659 0.64659

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

Point Group is D3d

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.775
C2 0.000 0.000 -0.775
H3 0.000 1.036 1.179
H4 -0.897 -0.518 1.179
H5 0.897 -0.518 1.179
H6 0.000 -1.036 -1.179
H7 -0.897 0.518 -1.179
H8 0.897 0.518 -1.179

Atom - Atom Distances (Å)
  C1 C2 H3 H4 H5 H6 H7 H8
C11.55071.11151.11151.11152.21152.21152.2115
C21.55072.21152.21152.21151.11151.11151.1115
H31.11152.21151.79391.79393.13812.57482.5748
H41.11152.21151.79391.79392.57482.57483.1381
H51.11152.21151.79391.79392.57483.13812.5748
H62.21151.11153.13812.57482.57481.79391.7939
H72.21151.11152.57482.57483.13811.79391.7939
H82.21151.11152.57483.13812.57481.79391.7939

picture of Ethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H6 111.278 C1 C2 H7 111.278
C1 C2 H8 111.278 C2 C1 H3 111.278
C2 C1 H4 111.278 C2 C1 H5 111.278
H3 C1 H4 107.606 H3 C1 H5 107.606
H4 C1 H5 107.606 H6 C2 H7 107.606
H6 C2 H8 107.606 H7 C2 H8 107.606
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/CEP-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.475      
2 C -0.475      
3 H 0.158      
4 H 0.158      
5 H 0.158      
6 H 0.158      
7 H 0.158      
8 H 0.158      


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 -14.410 0.000 0.000
y 0.000 -14.410 0.000
z 0.000 0.000 -15.209
Traceless
 xyz
x 0.399 0.000 0.000
y 0.000 0.399 0.000
z 0.000 0.000 -0.799
Polar
3z2-r2-1.597
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 3.179 0.000 0.000
y 0.000 3.179 0.000
z 0.000 0.000 3.826


<r2> (average value of r2) Å2
<r2> 28.748
(<r2>)1/2 5.362