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All results from a given calculation for C2H6 (Ethane)

using model chemistry: PBEPBEultrafine/6-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D3D 1A1g
Energy calculated at PBEPBEultrafine/6-31G
 hartrees
Energy at 0K-79.684336
Energy at 298.15K-79.690230
HF Energy-79.684336
Nuclear repulsion energy41.863405
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 PBEPBEultrafine/6-31G
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 2982 2941 0.00      
2 A1g 1417 1398 0.00      
3 A1g 1007 993 0.00      
4 A1u 302 298 0.00      
5 A2u 2981 2940 62.57      
6 A2u 1417 1397 4.69      
7 Eg 3047 3005 0.00      
7 Eg 3047 3005 0.00      
8 Eg 1505 1484 0.00      
8 Eg 1505 1484 0.00      
9 Eg 1214 1197 0.00      
9 Eg 1214 1197 0.00      
10 Eu 3075 3033 72.73      
10 Eu 3075 3033 72.73      
11 Eu 1508 1487 12.96      
11 Eu 1508 1487 12.96      
12 Eu 833 822 8.87      
12 Eu 833 822 8.87      

Unscaled Zero Point Vibrational Energy (zpe) 16234.7 cm-1
Scaled (by 0.9862) Zero Point Vibrational Energy (zpe) 16010.6 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 PBEPBEultrafine/6-31G
ABC
2.63534 0.65727 0.65727

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBEultrafine/6-31G

Point Group is D3d

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.768
C2 0.000 0.000 -0.768
H3 0.000 1.029 1.170
H4 -0.891 -0.514 1.170
H5 0.891 -0.514 1.170
H6 0.000 -1.029 -1.170
H7 -0.891 0.514 -1.170
H8 0.891 0.514 -1.170

Atom - Atom Distances (Å)
  C1 C2 H3 H4 H5 H6 H7 H8
C11.53671.10431.10431.10432.19452.19452.1945
C21.53672.19452.19452.19451.10431.10431.1043
H31.10432.19451.78141.78143.11602.55652.5565
H41.10432.19451.78141.78142.55652.55653.1160
H51.10432.19451.78141.78142.55653.11602.5565
H62.19451.10433.11602.55652.55651.78141.7814
H72.19451.10432.55652.55653.11601.78141.7814
H82.19451.10432.55653.11602.55651.78141.7814

picture of Ethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H6 111.344 C1 C2 H7 111.344
C1 C2 H8 111.344 C2 C1 H3 111.344
C2 C1 H4 111.344 C2 C1 H5 111.344
H3 C1 H4 107.535 H3 C1 H5 107.535
H4 C1 H5 107.535 H6 C2 H7 107.535
H6 C2 H8 107.535 H7 C2 H8 107.535
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBEultrafine/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.454      
2 C -0.454      
3 H 0.151      
4 H 0.151      
5 H 0.151      
6 H 0.151      
7 H 0.151      
8 H 0.151      


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 -14.769 0.000 0.000
y 0.000 -14.769 0.000
z 0.000 0.000 -15.135
Traceless
 xyz
x 0.183 0.000 0.000
y 0.000 0.183 0.000
z 0.000 0.000 -0.367
Polar
3z2-r2-0.734
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 3.356 0.000 0.000
y 0.000 3.356 0.000
z 0.000 0.000 3.564


<r2> (average value of r2) Å2
<r2> 30.949
(<r2>)1/2 5.563