return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for C2H6 (Ethane)

using model chemistry: B97D3/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D3D 1A1g
Energy calculated at B97D3/6-311G*
 hartrees
Energy at 0K-79.794750
Energy at 298.15K-79.800633
HF Energy-79.794750
Nuclear repulsion energy42.048502
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 B97D3/6-311G*
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 2975 2975 0.00 247.44 0.01 0.01
2 A1g 1408 1408 0.00 4.13 0.74 0.85
3 A1g 984 984 0.00 9.00 0.28 0.44
4 A1u 306 306 0.00 0.00 0.00 0.00
5 A2u 2975 2975 82.91 0.00 0.00 0.00
6 A2u 1392 1392 1.45 0.00 0.00 0.00
7 Eg 3024 3024 0.00 156.43 0.75 0.86
7 Eg 3024 3024 0.00 156.44 0.75 0.86
8 Eg 1495 1495 0.00 27.62 0.75 0.86
8 Eg 1495 1495 0.00 27.62 0.75 0.86
9 Eg 1203 1203 0.00 0.90 0.75 0.86
9 Eg 1203 1203 0.00 0.90 0.75 0.86
10 Eu 3051 3051 100.27 0.00 0.00 0.00
10 Eu 3051 3051 100.27 0.00 0.00 0.00
11 Eu 1498 1498 11.27 0.00 0.00 0.00
11 Eu 1498 1498 11.27 0.00 0.00 0.00
12 Eu 818 818 4.65 0.00 0.00 0.00
12 Eu 818 818 4.65 0.00 0.00 0.00

Unscaled Zero Point Vibrational Energy (zpe) 16107.8 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 16107.8 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 B97D3/6-311G*
ABC
2.66941 0.66157 0.66157

See section I.F.4 to change rotational constant units
Geometric Data calculated at B97D3/6-311G*

Point Group is D3d

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.766
C2 0.000 0.000 -0.766
H3 0.000 1.022 1.167
H4 -0.885 -0.511 1.167
H5 0.885 -0.511 1.167
H6 0.000 -1.022 -1.167
H7 -0.885 0.511 -1.167
H8 0.885 0.511 -1.167

Atom - Atom Distances (Å)
  C1 C2 H3 H4 H5 H6 H7 H8
C11.53211.09791.09791.09792.18692.18692.1869
C21.53212.18692.18692.18691.09791.09791.0979
H31.09792.18691.77001.77003.10292.54862.5486
H41.09792.18691.77001.77002.54862.54863.1029
H51.09792.18691.77001.77002.54863.10292.5486
H62.18691.09793.10292.54862.54861.77001.7700
H72.18691.09792.54862.54863.10291.77001.7700
H82.18691.09792.54863.10292.54861.77001.7700

picture of Ethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H6 111.440 C1 C2 H7 111.440
C1 C2 H8 111.440 C2 C1 H3 111.440
C2 C1 H4 111.440 C2 C1 H5 111.440
H3 C1 H4 107.432 H3 C1 H5 107.432
H4 C1 H5 107.432 H6 C2 H7 107.432
H6 C2 H8 107.432 H7 C2 H8 107.432
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B97D3/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.600      
2 C -0.600      
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
Primitive
 xyz
x -14.947 0.000 0.000
y 0.000 -14.947 0.000
z 0.000 0.000 -15.669
Traceless
 xyz
x 0.361 0.000 0.000
y 0.000 0.361 0.000
z 0.000 0.000 -0.722
Polar
3z2-r2-1.443
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 3.628 0.000 0.000
y 0.000 3.628 0.000
z 0.000 0.000 4.017


<r2> (average value of r2) Å2
<r2> 30.970
(<r2>)1/2 5.565