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All results from a given calculation for C2H4 (Ethylene)

using model chemistry: mPW1PW91/cc-pVTZ

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/cc-pVTZ
 hartrees
Energy at 0K-78.594484
Energy at 298.15K-78.597667
HF Energy-78.594484
Nuclear repulsion energy33.533284
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/cc-pVTZ
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 3164 3035 0.00 211.95 0.12 0.21
2 Ag 1707 1638 0.00 15.84 0.03 0.06
3 Ag 1385 1329 0.00 33.49 0.35 0.52
4 Au 1074 1030 0.00 0.00 0.00 0.00
5 B1u 3148 3020 15.52 0.00 0.00 0.00
6 B1u 1473 1413 10.82 0.00 0.00 0.00
7 B2g 989 949 0.00 2.22 0.75 0.86
8 B2u 3252 3119 20.19 0.00 0.00 0.00
9 B2u 830 796 0.31 0.00 0.00 0.00
10 B3g 3224 3093 0.00 122.11 0.75 0.86
11 B3g 1244 1193 0.00 0.40 0.75 0.86
12 B3u 983 943 96.22 0.00 0.00 0.00

Unscaled Zero Point Vibrational Energy (zpe) 11237.1 cm-1
Scaled (by 0.9592) Zero Point Vibrational Energy (zpe) 10778.6 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/cc-pVTZ
ABC
4.92698 1.01702 0.84301

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/cc-pVTZ

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.661
C2 0.000 0.000 -0.661
H3 0.000 0.921 1.229
H4 0.000 -0.921 1.229
H5 0.000 -0.921 -1.229
H6 0.000 0.921 -1.229

Atom - Atom Distances (Å)
  C1 C2 H3 H4 H5 H6
C11.32181.08261.08262.10282.1028
C21.32182.10282.10281.08261.0826
H31.08262.10281.84253.07252.4588
H41.08262.10281.84252.45883.0725
H52.10281.08263.07252.45881.8425
H62.10281.08262.45883.07251.8425

picture of Ethylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H5 121.678 C1 C2 H6 121.678
C2 C1 H3 121.678 C2 C1 H4 121.678
H3 C1 H4 116.643 H5 C2 H6 116.643
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.221      
2 C -0.221      
3 H 0.110      
4 H 0.110      
5 H 0.110      
6 H 0.110      


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 -15.426 0.000 0.000
y 0.000 -12.220 0.000
z 0.000 0.000 -12.150
Traceless
 xyz
x -3.241 0.000 0.000
y 0.000 1.568 0.000
z 0.000 0.000 1.673
Polar
3z2-r23.346
x2-y2-3.206
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.310 0.000 0.000
y 0.000 3.357 0.000
z 0.000 0.000 5.014


<r2> (average value of r2) Å2
<r2> 22.967
(<r2>)1/2 4.792