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All results from a given calculation for C2H4 (Ethylene)

using model chemistry: mPW1PW91/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D2H 1Ag
Energy calculated at mPW1PW91/6-31G*
 hartrees
Energy at 0K-78.562199
Energy at 298.15K-78.565370
HF Energy-78.562199
Nuclear repulsion energy33.392581
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 mPW1PW91/6-31G*
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 3198 3033 0.00 183.44 0.12 0.22
2 Ag 1736 1646 0.00 7.81 0.05 0.10
3 Ag 1403 1331 0.00 34.20 0.43 0.60
4 Au 1078 1022 0.00 0.00 0.00 0.00
5 B1u 3181 3016 17.45 0.00 0.00 0.00
6 B1u 1495 1417 6.92 0.00 0.00 0.00
7 B2g 968 918 0.00 0.91 0.75 0.86
8 B2u 3283 3113 27.46 0.00 0.00 0.00
9 B2u 836 792 1.18 0.00 0.00 0.00
10 B3g 3258 3090 0.00 119.37 0.75 0.86
11 B3g 1250 1186 0.00 1.48 0.75 0.86
12 B3u 984 933 96.73 0.00 0.00 0.00

Unscaled Zero Point Vibrational Energy (zpe) 11334.2 cm-1
Scaled (by 0.9483) Zero Point Vibrational Energy (zpe) 10748.2 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 mPW1PW91/6-31G*
ABC
4.90963 1.00649 0.83526

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/6-31G*

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.664
C2 0.000 0.000 -0.664
H3 0.000 0.923 1.237
H4 0.000 -0.923 1.237
H5 0.000 -0.923 -1.237
H6 0.000 0.923 -1.237

Atom - Atom Distances (Å)
  C1 C2 H3 H4 H5 H6
C11.32821.08601.08602.11282.1128
C21.32822.11282.11281.08601.0860
H31.08602.11281.84583.08592.4730
H41.08602.11281.84582.47303.0859
H52.11281.08603.08592.47301.8458
H62.11281.08602.47303.08591.8458

picture of Ethylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H5 121.807 C1 C2 H6 121.807
C2 C1 H3 121.807 C2 C1 H4 121.807
H3 C1 H4 116.386 H5 C2 H6 116.386
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.343      
2 C -0.343      
3 H 0.171      
4 H 0.171      
5 H 0.171      
6 H 0.171      


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 -15.090 0.000 0.000
y 0.000 -11.952 0.000
z 0.000 0.000 -11.810
Traceless
 xyz
x -3.209 0.000 0.000
y 0.000 1.498 0.000
z 0.000 0.000 1.711
Polar
3z2-r23.423
x2-y2-3.138
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.270 0.000 0.000
y 0.000 2.993 0.000
z 0.000 0.000 4.556


<r2> (average value of r2) Å2
<r2> 22.904
(<r2>)1/2 4.786