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All results from a given calculation for C2H4 (Ethylene)

using model chemistry: B3LYP/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D2H 1Ag
Energy calculated at B3LYP/6-31G(2df,p)
 hartrees
Energy at 0K-78.595412
Energy at 298.15K-78.598584
HF Energy-78.595412
Nuclear repulsion energy33.403462
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 Ag 3154 3044 0.00 179.53 0.12 0.21
2 Ag 1698 1639 0.00 7.79 0.03 0.06
3 Ag 1386 1337 0.00 35.80 0.41 0.58
4 Au 1073 1035 0.00 0.00 0.00 0.00
5 B1u 3137 3028 15.27 0.00 0.00 0.00
6 B1u 1472 1421 6.24 0.00 0.00 0.00
7 B2g 969 935 0.00 0.48 0.75 0.86
8 B2u 3237 3123 24.88 0.00 0.00 0.00
9 B2u 824 795 0.27 0.00 0.00 0.00
10 B3g 3209 3097 0.00 118.00 0.75 0.86
11 B3g 1237 1194 0.00 1.14 0.75 0.86
12 B3u 983 949 69.76 0.00 0.00 0.00

Unscaled Zero Point Vibrational Energy (zpe) 11189.6 cm-1
Scaled (by 0.965) Zero Point Vibrational Energy (zpe) 10798.0 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 B3LYP/6-31G(2df,p)
ABC
4.92691 1.00629 0.83562

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

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.664
C2 0.000 0.000 -0.664
H3 0.000 0.921 1.238
H4 0.000 -0.921 1.238
H5 0.000 -0.921 -1.238
H6 0.000 0.921 -1.238

Atom - Atom Distances (Å)
  C1 C2 H3 H4 H5 H6
C11.32731.08581.08582.11332.1133
C21.32732.11332.11331.08581.0858
H31.08582.11331.84253.08682.4766
H41.08582.11331.84252.47663.0868
H52.11331.08583.08682.47661.8425
H62.11331.08582.47663.08681.8425

picture of Ethylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H5 121.952 C1 C2 H6 121.952
C2 C1 H3 121.952 C2 C1 H4 121.952
H3 C1 H4 116.096 H5 C2 H6 116.096
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 -0.230      
2 C -0.230      
3 H 0.115      
4 H 0.115      
5 H 0.115      
6 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
Primitive
 xyz
x -14.911 0.000 0.000
y 0.000 -12.139 0.000
z 0.000 0.000 -12.064
Traceless
 xyz
x -2.809 0.000 0.000
y 0.000 1.348 0.000
z 0.000 0.000 1.461
Polar
3z2-r22.922
x2-y2-2.772
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.710 0.000 0.000
y 0.000 3.168 0.000
z 0.000 0.000 4.623


<r2> (average value of r2) Å2
<r2> 22.957
(<r2>)1/2 4.791