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All results from a given calculation for C2H4 (Ethylene)

using model chemistry: PBEPBE/STO-3G

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/STO-3G
 hartrees
Energy at 0K-77.509055
Energy at 298.15K-77.512144
HF Energy-77.509055
Nuclear repulsion energy32.993006
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/STO-3G
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 3347 3058 0.00 76.23 0.12 0.22
2 Ag 1796 1641 0.00 7.52 0.35 0.52
3 Ag 1448 1323 0.00 30.97 0.56 0.71
4 Au 1128 1031 0.00 0.00 0.00 0.00
5 B1u 3318 3031 13.63 0.00 0.00 0.00
6 B1u 1563 1428 3.26 0.00 0.00 0.00
7 B2g 968 885 0.00 0.07 0.75 0.86
8 B2u 3488 3187 0.14 0.00 0.00 0.00
9 B2u 858 783 1.69 0.00 0.00 0.00
10 B3g 3469 3170 0.00 58.95 0.75 0.86
11 B3g 1294 1182 0.00 3.34 0.75 0.86
12 B3u 994 908 43.01 0.00 0.00 0.00

Unscaled Zero Point Vibrational Energy (zpe) 11835.9 cm-1
Scaled (by 0.9136) Zero Point Vibrational Energy (zpe) 10813.3 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/STO-3G
ABC
4.78072 0.98468 0.81650

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/STO-3G

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 0.935 1.254
H4 0.000 -0.935 1.254
H5 0.000 -0.935 -1.254
H6 0.000 0.935 -1.254

Atom - Atom Distances (Å)
  C1 C2 H3 H4 H5 H6
C11.34031.10271.10272.13962.1396
C21.34032.13962.13961.10271.1027
H31.10272.13961.87053.12922.5086
H41.10272.13961.87052.50863.1292
H52.13961.10273.12922.50861.8705
H62.13961.10272.50863.12921.8705

picture of Ethylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H5 121.989 C1 C2 H6 121.989
C2 C1 H3 121.989 C2 C1 H4 121.989
H3 C1 H4 116.021 H5 C2 H6 116.021
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.165      
2 C -0.165      
3 H 0.083      
4 H 0.083      
5 H 0.083      
6 H 0.083      


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 -13.508 0.000 0.000
y 0.000 -11.492 0.000
z 0.000 0.000 -11.541
Traceless
 xyz
x -1.992 0.000 0.000
y 0.000 1.033 0.000
z 0.000 0.000 0.959
Polar
3z2-r21.918
x2-y2-2.016
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 0.412 0.000 0.000
y 0.000 1.628 0.000
z 0.000 0.000 2.615


<r2> (average value of r2) Å2
<r2> 22.788
(<r2>)1/2 4.774