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All results from a given calculation for C2H4 (Ethylene)

using model chemistry: PBEPBEultrafine/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D2H 1Ag
Energy calculated at PBEPBEultrafine/6-31G*
 hartrees
Energy at 0K-78.466064
Energy at 298.15K-78.469187
HF Energy-78.466064
Nuclear repulsion energy33.112519
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 PBEPBEultrafine/6-31G*
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 3100 3049 0.00 189.52 0.12 0.22
2 Ag 1671 1643 0.00 5.70 0.06 0.11
3 Ag 1358 1335 0.00 33.10 0.44 0.61
4 Au 1040 1023 0.00 0.00 0.00 0.00
5 B1u 3084 3034 18.24 0.00 0.00 0.00
6 B1u 1444 1420 5.60 0.00 0.00 0.00
7 B2g 907 892 0.00 0.30 0.75 0.86
8 B2u 3183 3130 30.16 0.00 0.00 0.00
9 B2u 807 794 1.32 0.00 0.00 0.00
10 B3g 3157 3105 0.00 123.02 0.75 0.86
11 B3g 1207 1187 0.00 1.73 0.75 0.86
12 B3u 937 921 86.67 0.00 0.00 0.00

Unscaled Zero Point Vibrational Energy (zpe) 10946.4 cm-1
Scaled (by 0.9835) Zero Point Vibrational Energy (zpe) 10765.8 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 PBEPBEultrafine/6-31G*
ABC
4.82836 0.98978 0.82140

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBEultrafine/6-31G*

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.669
C2 0.000 0.000 -0.669
H3 0.000 0.931 1.248
H4 0.000 -0.931 1.248
H5 0.000 -0.931 -1.248
H6 0.000 0.931 -1.248

Atom - Atom Distances (Å)
  C1 C2 H3 H4 H5 H6
C11.33901.09551.09552.13102.1310
C21.33902.13102.13101.09551.0955
H31.09552.13101.86133.11292.4951
H41.09552.13101.86132.49513.1129
H52.13101.09553.11292.49511.8613
H62.13101.09552.49513.11291.8613

picture of Ethylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H5 121.847 C1 C2 H6 121.847
C2 C1 H3 121.847 C2 C1 H4 121.847
H3 C1 H4 116.307 H5 C2 H6 116.307
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBEultrafine/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.305      
2 C -0.305      
3 H 0.153      
4 H 0.153      
5 H 0.153      
6 H 0.153      


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 -15.077 0.000 0.000
y 0.000 -12.052 0.000
z 0.000 0.000 -11.954
Traceless
 xyz
x -3.074 0.000 0.000
y 0.000 1.463 0.000
z 0.000 0.000 1.611
Polar
3z2-r23.222
x2-y2-3.025
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.288 0.000 0.000
y 0.000 3.099 0.000
z 0.000 0.000 4.592


<r2> (average value of r2) Å2
<r2> 23.206
(<r2>)1/2 4.817