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All results from a given calculation for C2H6 (Ethane)

using model chemistry: TPSSh/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D3D 1A1g
Energy calculated at TPSSh/3-21G*
 hartrees
Energy at 0K-79.405623
Energy at 298.15K-79.411543
HF Energy-79.405623
Nuclear repulsion energy41.923951
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 TPSSh/3-21G*
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 3044 2939 0.00 193.11 0.01 0.02
2 A1g 1459 1409 0.00 9.18 0.71 0.83
3 A1g 971 937 0.00 8.40 0.28 0.44
4 A1u 304 294 0.00 0.00 0.00 0.00
5 A2u 3043 2938 52.77 0.00 0.00 0.00
6 A2u 1467 1416 4.47 0.00 0.00 0.00
7 Eg 3091 2985 0.00 125.59 0.75 0.86
7 Eg 3091 2985 0.00 125.58 0.75 0.86
8 Eg 1575 1521 0.00 46.60 0.75 0.86
8 Eg 1575 1521 0.00 46.60 0.75 0.86
9 Eg 1255 1212 0.00 3.83 0.75 0.86
9 Eg 1255 1212 0.00 3.83 0.75 0.86
10 Eu 3120 3013 67.72 0.00 0.00 0.00
10 Eu 3120 3013 67.73 0.00 0.00 0.00
11 Eu 1576 1522 10.49 0.00 0.00 0.00
11 Eu 1576 1522 10.49 0.00 0.00 0.00
12 Eu 853 824 8.00 0.00 0.00 0.00
12 Eu 853 824 8.00 0.00 0.00 0.00

Unscaled Zero Point Vibrational Energy (zpe) 16613.0 cm-1
Scaled (by 0.9657) Zero Point Vibrational Energy (zpe) 16043.2 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 TPSSh/3-21G*
ABC
2.64957 0.65568 0.65568

See section I.F.4 to change rotational constant units
Geometric Data calculated at TPSSh/3-21G*

Point Group is D3d

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.773
C2 0.000 0.000 -0.773
H3 0.000 1.026 1.163
H4 -0.888 -0.513 1.163
H5 0.888 -0.513 1.163
H6 0.000 -1.026 -1.163
H7 -0.888 0.513 -1.163
H8 0.888 0.513 -1.163

Atom - Atom Distances (Å)
  C1 C2 H3 H4 H5 H6 H7 H8
C11.54691.09711.09711.09712.19092.19092.1909
C21.54692.19092.19092.19091.09711.09711.0971
H31.09712.19091.77671.77673.10072.54132.5413
H41.09712.19091.77671.77672.54132.54133.1007
H51.09712.19091.77671.77672.54133.10072.5413
H62.19091.09713.10072.54132.54131.77671.7767
H72.19091.09712.54132.54133.10071.77671.7767
H82.19091.09712.54133.10072.54131.77671.7767

picture of Ethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H6 110.773 C1 C2 H7 110.773
C1 C2 H8 110.773 C2 C1 H3 110.773
C2 C1 H4 110.773 C2 C1 H5 110.773
H3 C1 H4 108.139 H3 C1 H5 108.139
H4 C1 H5 108.139 H6 C2 H7 108.139
H6 C2 H8 108.139 H7 C2 H8 108.139
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at TPSSh/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.601      
2 C -0.601      
3 H 0.200      
4 H 0.200      
5 H 0.200      
6 H 0.200      
7 H 0.200      
8 H 0.200      


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 3.170 0.000 0.000
y 0.000 3.170 0.000
z 0.000 0.000 3.403


<r2> (average value of r2) Å2
<r2> 30.908
(<r2>)1/2 5.560