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All results from a given calculation for C2H6 (Ethane)

using model chemistry: HF/cc-pCVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D3D 1A1g
Energy calculated at HF/cc-pCVTZ
 hartrees
Energy at 0K-79.260415
Energy at 298.15K-79.266425
HF Energy-79.260415
Nuclear repulsion energy42.452328
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 HF/cc-pCVTZ
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 3158 2883 0.00      
2 A1g 1548 1414 0.00      
3 A1g 1049 958 0.00      
4 A1u 327 299 0.00      
5 A2u 3152 2878 73.87      
6 A2u 1522 1390 0.36      
7 Eg 3194 2917 0.00      
7 Eg 3194 2917 0.00      
8 Eg 1614 1474 0.00      
8 Eg 1614 1474 0.00      
9 Eg 1323 1208 0.00      
9 Eg 1323 1208 0.00      
10 Eu 3222 2942 100.36      
10 Eu 3222 2942 100.36      
11 Eu 1619 1478 7.21      
11 Eu 1619 1478 7.21      
12 Eu 881 804 2.30      
12 Eu 881 804 2.30      

Unscaled Zero Point Vibrational Energy (zpe) 17229.9 cm-1
Scaled (by 0.9131) Zero Point Vibrational Energy (zpe) 15732.6 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 HF/cc-pCVTZ
ABC
2.72968 0.67178 0.67178

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/cc-pCVTZ

Point Group is D3d

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.762
C2 0.000 0.000 -0.762
H3 0.000 1.011 1.154
H4 -0.875 -0.505 1.154
H5 0.875 -0.505 1.154
H6 0.000 -1.011 -1.154
H7 -0.875 0.505 -1.154
H8 0.875 0.505 -1.154

Atom - Atom Distances (Å)
  C1 C2 H3 H4 H5 H6 H7 H8
C11.52471.08401.08401.08402.16682.16682.1668
C21.52472.16682.16682.16681.08401.08401.0840
H31.08402.16681.75041.75043.06852.52032.5203
H41.08402.16681.75041.75042.52032.52033.0685
H51.08402.16681.75041.75042.52033.06852.5203
H62.16681.08403.06852.52032.52031.75041.7504
H72.16681.08402.52032.52033.06851.75041.7504
H82.16681.08402.52033.06852.52031.75041.7504

picture of Ethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H6 111.203 C1 C2 H7 111.203
C1 C2 H8 111.203 C2 C1 H3 111.203
C2 C1 H4 111.203 C2 C1 H5 111.203
H3 C1 H4 107.685 H3 C1 H5 107.685
H4 C1 H5 107.685 H6 C2 H7 107.685
H6 C2 H8 107.685 H7 C2 H8 107.685
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/cc-pCVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.194      
2 C -0.194      
3 H 0.065      
4 H 0.065      
5 H 0.065      
6 H 0.065      
7 H 0.065      
8 H 0.065      


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 -14.912 0.000 0.000
y 0.000 -14.912 0.000
z 0.000 0.000 -15.639
Traceless
 xyz
x 0.364 0.000 0.000
y 0.000 0.364 0.000
z 0.000 0.000 -0.727
Polar
3z2-r2-1.455
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 3.682 0.000 0.000
y 0.000 3.682 0.000
z 0.000 0.000 4.092


<r2> (average value of r2) Å2
<r2> 30.563
(<r2>)1/2 5.528