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All results from a given calculation for C2H6 (Ethane)

using model chemistry: mPW1PW91/SDD

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D3D 1A1g
Energy calculated at mPW1PW91/SDD
 hartrees
Energy at 0K-79.798186
Energy at 298.15K-79.804101
HF Energy-79.798186
Nuclear repulsion energy42.086049
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 mPW1PW91/SDD
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 3074 2920 0.00      
2 A1g 1453 1380 0.00      
3 A1g 1041 989 0.00      
4 A1u 301 286 0.00      
5 A2u 3068 2914 75.73      
6 A2u 1446 1373 18.74      
7 Eg 3152 2994 0.00      
7 Eg 3152 2994 0.00      
8 Eg 1541 1464 0.00      
8 Eg 1541 1464 0.00      
9 Eg 1241 1179 0.00      
9 Eg 1241 1179 0.00      
10 Eu 3180 3021 98.72      
10 Eu 3180 3021 98.73      
11 Eu 1541 1464 20.31      
11 Eu 1541 1464 20.31      
12 Eu 847 805 11.94      
12 Eu 847 805 11.94      

Unscaled Zero Point Vibrational Energy (zpe) 16693.3 cm-1
Scaled (by 0.9499) Zero Point Vibrational Energy (zpe) 15857.0 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 mPW1PW91/SDD
ABC
2.67228 0.66199 0.66199

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/SDD

Point Group is D3d

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.767
C2 0.000 0.000 -0.767
H3 0.000 1.021 1.163
H4 -0.885 -0.511 1.163
H5 0.885 -0.511 1.163
H6 0.000 -1.021 -1.163
H7 -0.885 0.511 -1.163
H8 0.885 0.511 -1.163

Atom - Atom Distances (Å)
  C1 C2 H3 H4 H5 H6 H7 H8
C11.53481.09531.09531.09532.18392.18392.1839
C21.53482.18392.18392.18391.09531.09531.0953
H31.09532.18391.76911.76913.09562.54032.5403
H41.09532.18391.76911.76912.54032.54033.0956
H51.09532.18391.76911.76912.54033.09562.5403
H62.18391.09533.09562.54032.54031.76911.7691
H72.18391.09532.54032.54033.09561.76911.7691
H82.18391.09532.54033.09562.54031.76911.7691

picture of Ethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H6 111.170 C1 C2 H7 111.170
C1 C2 H8 111.170 C2 C1 H3 111.170
C2 C1 H4 111.170 C2 C1 H5 111.170
H3 C1 H4 107.720 H3 C1 H5 107.720
H4 C1 H5 107.720 H6 C2 H7 107.720
H6 C2 H8 107.720 H7 C2 H8 107.720
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/SDD Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.623      
2 C -0.623      
3 H 0.208      
4 H 0.208      
5 H 0.208      
6 H 0.208      
7 H 0.208      
8 H 0.208      


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 -14.523 0.000 0.000
y 0.000 -14.523 0.000
z 0.000 0.000 -15.029
Traceless
 xyz
x 0.253 0.000 0.000
y 0.000 0.253 0.000
z 0.000 0.000 -0.506
Polar
3z2-r2-1.012
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 3.192 0.000 0.000
y 0.000 3.192 0.000
z 0.000 0.000 3.398


<r2> (average value of r2) Å2
<r2> 30.617
(<r2>)1/2 5.533