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All results from a given calculation for C2H4 (Ethylene)

using model chemistry: PBEPBE/cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D2H 1Ag
Energy calculated at PBEPBE/cc-pVDZ
 hartrees
Energy at 0K-78.471011
Energy at 298.15K-78.474135
HF Energy-78.471011
Nuclear repulsion energy33.010318
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 PBEPBE/cc-pVDZ
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 3081 3063 0.00 224.69 0.12 0.21
2 Ag 1649 1639 0.00 8.59 0.04 0.07
3 Ag 1326 1319 0.00 33.80 0.45 0.62
4 Au 1029 1023 0.00 0.00 0.00 0.00
5 B1u 3064 3046 15.37 0.00 0.00 0.00
6 B1u 1393 1385 6.33 0.00 0.00 0.00
7 B2g 912 907 0.00 0.49 0.75 0.86
8 B2u 3177 3158 21.24 0.00 0.00 0.00
9 B2u 796 792 1.03 0.00 0.00 0.00
10 B3g 3149 3131 0.00 146.78 0.75 0.86
11 B3g 1187 1180 0.00 1.30 0.75 0.86
12 B3u 931 925 72.36 0.00 0.00 0.00

Unscaled Zero Point Vibrational Energy (zpe) 10846.1 cm-1
Scaled (by 0.9942) Zero Point Vibrational Energy (zpe) 10783.1 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 PBEPBE/cc-pVDZ
ABC
4.75653 0.98746 0.81770

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/cc-pVDZ

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.670
C2 0.000 0.000 -0.670
H3 0.000 0.938 1.249
H4 0.000 -0.938 1.249
H5 0.000 -0.938 -1.249
H6 0.000 0.938 -1.249

Atom - Atom Distances (Å)
  C1 C2 H3 H4 H5 H6
C11.34081.10161.10162.13592.1359
C21.34082.13592.13591.10161.1016
H31.10162.13591.87533.12312.4974
H41.10162.13591.87532.49743.1231
H52.13591.10163.12312.49741.8753
H62.13591.10162.49743.12311.8753

picture of Ethylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H5 121.666 C1 C2 H6 121.666
C2 C1 H3 121.666 C2 C1 H4 121.666
H3 C1 H4 116.669 H5 C2 H6 116.669
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.066      
2 C -0.066      
3 H 0.033      
4 H 0.033      
5 H 0.033      
6 H 0.033      


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 -15.171 0.000 0.000
y 0.000 -12.310 0.000
z 0.000 0.000 -12.273
Traceless
 xyz
x -2.880 0.000 0.000
y 0.000 1.412 0.000
z 0.000 0.000 1.468
Polar
3z2-r22.935
x2-y2-2.861
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.611 0.000 0.000
y 0.000 3.306 0.000
z 0.000 0.000 4.860


<r2> (average value of r2) Å2
<r2> 23.423
(<r2>)1/2 4.840