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All results from a given calculation for C2H4 (Ethylene)

using model chemistry: PBE1PBE/aug-cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D2H 1Ag
Energy calculated at PBE1PBE/aug-cc-pVTZ
 hartrees
Energy at 0K-78.512017
Energy at 298.15K-78.515195
HF Energy-78.512017
Nuclear repulsion energy33.492697
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 PBE1PBE/aug-cc-pVTZ
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 3158 3037 0.00 215.95 0.10 0.18
2 Ag 1701 1635 0.00 35.54 0.01 0.02
3 Ag 1379 1326 0.00 39.18 0.22 0.36
4 Au 1064 1023 0.00 0.00 0.00 0.00
5 B1u 3142 3021 14.11 0.00 0.00 0.00
6 B1u 1466 1410 11.44 0.00 0.00 0.00
7 B2g 986 948 0.00 3.00 0.75 0.86
8 B2u 3246 3121 16.51 0.00 0.00 0.00
9 B2u 825 793 0.11 0.00 0.00 0.00
10 B3g 3218 3094 0.00 119.92 0.75 0.86
11 B3g 1238 1190 0.00 0.08 0.75 0.86
12 B3u 980 942 100.03 0.00 0.00 0.00

Unscaled Zero Point Vibrational Energy (zpe) 11200.8 cm-1
Scaled (by 0.9615) Zero Point Vibrational Energy (zpe) 10769.6 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 PBE1PBE/aug-cc-pVTZ
ABC
4.91054 1.01491 0.84108

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBE1PBE/aug-cc-pVTZ

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.662
C2 0.000 0.000 -0.662
H3 0.000 0.923 1.230
H4 0.000 -0.923 1.230
H5 0.000 -0.923 -1.230
H6 0.000 0.923 -1.230

Atom - Atom Distances (Å)
  C1 C2 H3 H4 H5 H6
C11.32331.08401.08402.10512.1051
C21.32332.10512.10511.08401.0840
H31.08402.10511.84563.07602.4608
H41.08402.10511.84562.46083.0760
H52.10511.08403.07602.46081.8456
H62.10511.08402.46083.07601.8456

picture of Ethylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H5 121.647 C1 C2 H6 121.647
C2 C1 H3 121.647 C2 C1 H4 121.647
H3 C1 H4 116.706 H5 C2 H6 116.706
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBE1PBE/aug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.710      
2 C -0.710      
3 H 0.355      
4 H 0.355      
5 H 0.355      
6 H 0.355      


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 -15.677 0.000 0.000
y 0.000 -12.315 0.000
z 0.000 0.000 -12.260
Traceless
 xyz
x -3.389 0.000 0.000
y 0.000 1.654 0.000
z 0.000 0.000 1.735
Polar
3z2-r23.471
x2-y2-3.362
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.313 0.000 0.000
y 0.000 3.735 0.000
z 0.000 0.000 5.252


<r2> (average value of r2) Å2
<r2> 23.096
(<r2>)1/2 4.806