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All results from a given calculation for C2H4 (Ethylene)

using model chemistry: B3PW91/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 B3PW91/SDD
 hartrees
Energy at 0K-78.547671
Energy at 298.15K-78.550853
HF Energy-78.547671
Nuclear repulsion energy33.127517
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 B3PW91/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 3185 3049 0.00      
2 Ag 1687 1615 0.00      
3 Ag 1393 1334 0.00      
4 Au 1059 1014 0.00      
5 B1u 3159 3024 20.66      
6 B1u 1489 1425 18.32      
7 B2g 1010 967 0.00      
8 B2u 3292 3151 53.60      
9 B2u 844 808 5.12      
10 B3g 3255 3116 0.00      
11 B3g 1246 1193 0.00      
12 B3u 999 956 168.17      

Unscaled Zero Point Vibrational Energy (zpe) 11308.8 cm-1
Scaled (by 0.9573) Zero Point Vibrational Energy (zpe) 10825.9 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 B3PW91/SDD
ABC
4.88362 0.98465 0.81943

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/SDD

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.673
C2 0.000 0.000 -0.673
H3 0.000 0.925 1.245
H4 0.000 -0.925 1.245
H5 0.000 -0.925 -1.245
H6 0.000 0.925 -1.245

Atom - Atom Distances (Å)
  C1 C2 H3 H4 H5 H6
C11.34581.08811.08812.12992.1299
C21.34582.12992.12991.08811.0881
H31.08812.12991.85073.10312.4908
H41.08812.12991.85072.49083.1031
H52.12991.08813.10312.49081.8507
H62.12991.08812.49083.10311.8507

picture of Ethylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H5 121.744 C1 C2 H6 121.744
C2 C1 H3 121.744 C2 C1 H4 121.744
H3 C1 H4 116.512 H5 C2 H6 116.512
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/SDD Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.407      
2 C -0.407      
3 H 0.204      
4 H 0.204      
5 H 0.204      
6 H 0.204      


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 -15.679 0.000 0.000
y 0.000 -11.831 0.000
z 0.000 0.000 -11.705
Traceless
 xyz
x -3.911 0.000 0.000
y 0.000 1.861 0.000
z 0.000 0.000 2.050
Polar
3z2-r24.101
x2-y2-3.848
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.316 0.000 0.000
y 0.000 2.673 0.000
z 0.000 0.000 4.683


<r2> (average value of r2) Å2
<r2> 23.227
(<r2>)1/2 4.819