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All results from a given calculation for C2H6 (Ethane)

using model chemistry: G4

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D3D 1A1g
Energy calculated at G4
 hartrees
Energy at 0K-79.738112
Energy at 298.15K-79.733662
HF Energy-79.838691
Nuclear repulsion energy42.138624
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 B3LYP/6-31G(2df,p)
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 3035 2929 0.00 208.79 0.01 0.02
2 A1g 1422 1372 0.00 5.60 0.72 0.84
3 A1g 1003 968 0.00 9.41 0.27 0.43
4 A1u 311 300 0.00 0.00 0.00 0.00
5 A2u 3036 2930 55.12 0.00 0.00 0.00
6 A2u 1408 1359 0.02 0.00 0.00 0.00
7 Eg 3088 2979 0.00 126.58 0.75 0.86
7 Eg 3088 2979 0.00 126.58 0.75 0.86
8 Eg 1502 1450 0.00 31.38 0.75 0.86
8 Eg 1502 1450 0.00 31.38 0.75 0.86
9 Eg 1222 1179 0.00 2.05 0.75 0.86
9 Eg 1222 1179 0.00 2.05 0.75 0.86
10 Eu 3113 3004 63.36 0.00 0.00 0.00
10 Eu 3113 3004 63.36 0.00 0.00 0.00
11 Eu 1507 1455 5.79 0.00 0.00 0.00
11 Eu 1507 1455 5.79 0.00 0.00 0.00
12 Eu 823 794 3.87 0.00 0.00 0.00
12 Eu 823 794 3.87 0.00 0.00 0.00

Unscaled Zero Point Vibrational Energy (zpe) 16360.8 cm-1
Scaled (by 0.965) Zero Point Vibrational Energy (zpe) 15788.2 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 B3LYP/6-31G(2df,p)
ABC
2.68156 0.66411 0.66411

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-31G(2df,p)

Point Group is D3d

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.765
C2 0.000 0.000 -0.765
H3 0.000 1.020 1.164
H4 -0.883 -0.510 1.164
H5 0.883 -0.510 1.164
H6 0.000 -1.020 -1.164
H7 -0.883 0.510 -1.164
H8 0.883 0.510 -1.164

Atom - Atom Distances (Å)
  C1 C2 H3 H4 H5 H6 H7 H8
C11.53021.09481.09481.09482.18192.18192.1819
C21.53022.18192.18192.18191.09481.09481.0948
H31.09482.18191.76601.76603.09472.54132.5413
H41.09482.18191.76601.76602.54132.54133.0947
H51.09482.18191.76601.76602.54133.09472.5413
H62.18191.09483.09472.54132.54131.76601.7660
H72.18191.09482.54132.54133.09471.76601.7660
H82.18191.09482.54133.09472.54131.76601.7660

picture of Ethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H6 111.345 C1 C2 H7 111.345
C1 C2 H8 111.345 C2 C1 H3 111.345
C2 C1 H4 111.345 C2 C1 H5 111.345
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 B3LYP/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.346      
2 C -0.346      
3 H 0.115      
4 H 0.115      
5 H 0.115      
6 H 0.115      
7 H 0.115      
8 H 0.115      


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


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 0.000 0.000 0.000
y 0.000 0.000 0.000
z 0.000 0.000 0.000


<r2> (average value of r2) Å2
<r2> 30.658
(<r2>)1/2 5.537