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All results from a given calculation for C2H4 (Ethylene)

using model chemistry: PBE1PBE/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 PBE1PBE/6-31G
 hartrees
Energy at 0K-78.464416
Energy at 298.15K-78.467616
HF Energy-78.464416
Nuclear repulsion energy33.312371
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/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 3197 3056 0.00 186.41 0.12 0.21
2 Ag 1727 1651 0.00 7.66 0.07 0.13
3 Ag 1421 1358 0.00 36.40 0.43 0.60
4 Au 1079 1031 0.00 0.00 0.00 0.00
5 B1u 3176 3036 15.32 0.00 0.00 0.00
6 B1u 1516 1449 9.32 0.00 0.00 0.00
7 B2g 1018 973 0.00 1.49 0.75 0.86
8 B2u 3289 3144 33.48 0.00 0.00 0.00
9 B2u 860 822 2.60 0.00 0.00 0.00
10 B3g 3259 3116 0.00 119.77 0.75 0.86
11 B3g 1271 1215 0.00 1.42 0.75 0.86
12 B3u 1009 964 128.26 0.00 0.00 0.00

Unscaled Zero Point Vibrational Energy (zpe) 11411.4 cm-1
Scaled (by 0.9559) Zero Point Vibrational Energy (zpe) 10908.1 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 PBE1PBE/6-31G
ABC
4.91740 0.99876 0.83015

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBE1PBE/6-31G

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.667
C2 0.000 0.000 -0.667
H3 0.000 0.922 1.241
H4 0.000 -0.922 1.241
H5 0.000 -0.922 -1.241
H6 0.000 0.922 -1.241

Atom - Atom Distances (Å)
  C1 C2 H3 H4 H5 H6
C11.33351.08641.08642.11902.1190
C21.33352.11902.11901.08641.0864
H31.08642.11901.84433.09242.4822
H41.08642.11901.84432.48223.0924
H52.11901.08643.09242.48221.8443
H62.11901.08642.48223.09241.8443

picture of Ethylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H5 121.915 C1 C2 H6 121.915
C2 C1 H3 121.915 C2 C1 H4 121.915
H3 C1 H4 116.170 H5 C2 H6 116.170
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBE1PBE/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.320      
2 C -0.320      
3 H 0.160      
4 H 0.160      
5 H 0.160      
6 H 0.160      


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 -15.214 0.000 0.000
y 0.000 -12.059 0.000
z 0.000 0.000 -11.904
Traceless
 xyz
x -3.233 0.000 0.000
y 0.000 1.500 0.000
z 0.000 0.000 1.732
Polar
3z2-r23.465
x2-y2-3.155
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.114 0.000 0.000
y 0.000 2.943 0.000
z 0.000 0.000 4.583


<r2> (average value of r2) Å2
<r2> 23.054
(<r2>)1/2 4.801