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All results from a given calculation for C2H4 (Ethylene)

using model chemistry: B2PLYP/Def2TZVPP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D2H 1Ag
Energy calculated at B2PLYP/Def2TZVPP
 hartrees
Energy at 0K-78.540894
Energy at 298.15K-78.544073
HF Energy-78.431119
Nuclear repulsion energy33.477881
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 B2PLYP/Def2TZVPP
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 Ag 3172 3172 0.00 212.88 0.13 0.23
2 Ag 1689 1689 0.00 14.39 0.01 0.02
3 Ag 1386 1386 0.00 35.57 0.29 0.45
4 Au 1070 1070 0.00 0.00 0.00 0.00
5 B1u 3156 3156 14.50 0.00 0.00 0.00
6 B1u 1489 1489 9.27 0.00 0.00 0.00
7 B2g 974 974 0.00 2.15 0.75 0.86
8 B2u 3262 3262 19.44 0.00 0.00 0.00
9 B2u 837 837 0.13 0.00 0.00 0.00
10 B3g 3234 3234 0.00 113.97 0.75 0.86
11 B3g 1253 1253 0.00 0.42 0.75 0.86
12 B3u 984 984 98.37 0.00 0.00 0.00

Unscaled Zero Point Vibrational Energy (zpe) 11252.4 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 11252.4 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 B2PLYP/Def2TZVPP
ABC
4.93254 1.01079 0.83888

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/Def2TZVPP

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 1.230
H4 0.000 -0.921 1.230
H5 0.000 -0.921 -1.230
H6 0.000 0.921 -1.230

Atom - Atom Distances (Å)
  C1 C2 H3 H4 H5 H6
C11.32791.08081.08082.10582.1058
C21.32792.10582.10581.08081.0808
H31.08082.10581.84153.07272.4598
H41.08082.10581.84152.45983.0727
H52.10581.08083.07272.45981.8415
H62.10581.08082.45983.07271.8415

picture of Ethylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H5 121.577 C1 C2 H6 121.577
C2 C1 H3 121.577 C2 C1 H4 121.577
H3 C1 H4 116.845 H5 C2 H6 116.845
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/Def2TZVPP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.188      
2 C -0.188      
3 H 0.094      
4 H 0.094      
5 H 0.094      
6 H 0.094      


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 -15.708 0.000 0.000
y 0.000 -12.469 0.000
z 0.000 0.000 -12.391
Traceless
 xyz
x -3.278 0.000 0.000
y 0.000 1.581 0.000
z 0.000 0.000 1.697
Polar
3z2-r23.395
x2-y2-3.239
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.650 0.000 0.000
y 0.000 3.375 0.000
z 0.000 0.000 5.094


<r2> (average value of r2) Å2
<r2> 23.178
(<r2>)1/2 4.814