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All results from a given calculation for C2H4 (Ethylene)

using model chemistry: BLYP/SDD

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D2H 1Ag
Energy calculated at BLYP/SDD
 hartrees
Energy at 0K-78.529599
Energy at 298.15K-78.532742
HF Energy-78.529599
Nuclear repulsion energy32.841939
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 BLYP/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 Ag 3085 3068 0.00      
2 Ag 1622 1613 0.00      
3 Ag 1348 1340 0.00      
4 Au 1022 1017 0.00      
5 B1u 3061 3044 20.39      
6 B1u 1446 1438 16.20      
7 B2g 959 954 0.00      
8 B2u 3193 3175 61.06      
9 B2u 817 813 5.65      
10 B3g 3152 3135 0.00      
11 B3g 1211 1204 0.00      
12 B3u 961 956 167.96      

Unscaled Zero Point Vibrational Energy (zpe) 10938.5 cm-1
Scaled (by 0.9945) Zero Point Vibrational Energy (zpe) 10878.3 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 BLYP/SDD
ABC
4.81253 0.96640 0.80479

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

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.679
C2 0.000 0.000 -0.679
H3 0.000 0.932 1.256
H4 0.000 -0.932 1.256
H5 0.000 -0.932 -1.256
H6 0.000 0.932 -1.256

Atom - Atom Distances (Å)
  C1 C2 H3 H4 H5 H6
C11.35901.09621.09622.14862.1486
C21.35902.14862.14861.09621.0962
H31.09622.14861.86433.12882.5127
H41.09622.14861.86432.51273.1288
H52.14861.09623.12882.51271.8643
H62.14861.09622.51273.12881.8643

picture of Ethylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H5 121.752 C1 C2 H6 121.752
C2 C1 H3 121.752 C2 C1 H4 121.752
H3 C1 H4 116.495 H5 C2 H6 116.495
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/SDD Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.404      
2 C -0.404      
3 H 0.202      
4 H 0.202      
5 H 0.202      
6 H 0.202      


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 -15.668 0.000 0.000
y 0.000 -11.886 0.000
z 0.000 0.000 -11.785
Traceless
 xyz
x -3.832 0.000 0.000
y 0.000 1.841 0.000
z 0.000 0.000 1.991
Polar
3z2-r23.983
x2-y2-3.782
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.332 0.000 0.000
y 0.000 2.725 0.000
z 0.000 0.000 4.697


<r2> (average value of r2) Å2
<r2> 23.520
(<r2>)1/2 4.850