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All results from a given calculation for C2H6 (Ethane)

using model chemistry: PBEPBEultrafine/CEP-121G*

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/CEP-121G*
 hartrees
Energy at 0K-14.898630
Energy at 298.15K-14.904473
HF Energy-14.898630
Nuclear repulsion energy26.283954
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/CEP-121G*
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 2960 2960 0.00      
2 A1g 1384 1384 0.00      
3 A1g 983 983 0.00      
4 A1u 300 300 0.00      
5 A2u 2960 2960 71.93      
6 A2u 1358 1358 2.07      
7 Eg 3023 3023 0.00      
7 Eg 3023 3023 0.00      
8 Eg 1467 1467 0.00      
8 Eg 1467 1467 0.00      
9 Eg 1173 1173 0.00      
9 Eg 1173 1173 0.00      
10 Eu 3049 3049 83.31      
10 Eu 3049 3049 83.33      
11 Eu 1471 1471 13.06      
11 Eu 1471 1471 13.06      
12 Eu 792 792 5.18      
12 Eu 792 792 5.18      

Unscaled Zero Point Vibrational Energy (zpe) 15947.1 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 15947.1 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/CEP-121G*
ABC
2.63373 0.65320 0.65320

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBEultrafine/CEP-121G*

Point Group is D3d

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.771
C2 0.000 0.000 -0.771
H3 0.000 1.029 1.174
H4 -0.891 -0.514 1.174
H5 0.891 -0.514 1.174
H6 0.000 -1.029 -1.174
H7 -0.891 0.514 -1.174
H8 0.891 0.514 -1.174

Atom - Atom Distances (Å)
  C1 C2 H3 H4 H5 H6 H7 H8
C11.54231.10491.10491.10492.20062.20062.2006
C21.54232.20062.20062.20061.10491.10491.1049
H31.10492.20061.78201.78203.12222.56372.5637
H41.10492.20061.78201.78202.56372.56373.1222
H51.10492.20061.78201.78202.56373.12222.5637
H62.20061.10493.12222.56372.56371.78201.7820
H72.20061.10492.56372.56373.12221.78201.7820
H82.20061.10492.56373.12222.56371.78201.7820

picture of Ethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H6 111.391 C1 C2 H7 111.391
C1 C2 H8 111.391 C2 C1 H3 111.391
C2 C1 H4 111.391 C2 C1 H5 111.391
H3 C1 H4 107.486 H3 C1 H5 107.486
H4 C1 H5 107.486 H6 C2 H7 107.486
H6 C2 H8 107.486 H7 C2 H8 107.486
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBEultrafine/CEP-121G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.520      
2 C -0.520      
3 H 0.173      
4 H 0.173      
5 H 0.173      
6 H 0.173      
7 H 0.173      
8 H 0.173      


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 -14.955 0.000 0.000
y 0.000 -14.955 0.000
z 0.000 0.000 -15.639
Traceless
 xyz
x 0.342 0.000 0.000
y 0.000 0.342 0.000
z 0.000 0.000 -0.684
Polar
3z2-r2-1.369
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 3.838 0.000 0.000
y 0.000 3.838 0.000
z 0.000 0.000 4.186


<r2> (average value of r2) Å2
<r2> 28.863
(<r2>)1/2 5.372