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All results from a given calculation for C2H4 (Ethylene)

using model chemistry: mPW1PW91/aug-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/aug-cc-pVTZ
 hartrees
Energy at 0K-78.595230
Energy at 298.15K-78.598412
HF Energy-78.595230
Nuclear repulsion energy33.527249
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/aug-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 3031 0.00 213.28 0.10 0.18
2 Ag 1704 1632 0.00 34.98 0.01 0.02
3 Ag 1384 1326 0.00 39.79 0.22 0.36
4 Au 1064 1019 0.00 0.00 0.00 0.00
5 B1u 3148 3016 14.74 0.00 0.00 0.00
6 B1u 1473 1412 11.17 0.00 0.00 0.00
7 B2g 989 948 0.00 3.09 0.75 0.86
8 B2u 3251 3115 17.43 0.00 0.00 0.00
9 B2u 828 794 0.10 0.00 0.00 0.00
10 B3g 3223 3088 0.00 119.08 0.75 0.86
11 B3g 1243 1191 0.00 0.10 0.75 0.86
12 B3u 983 942 99.34 0.00 0.00 0.00

Unscaled Zero Point Vibrational Energy (zpe) 11227.3 cm-1
Scaled (by 0.9581) Zero Point Vibrational Energy (zpe) 10756.9 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 mPW1PW91/aug-cc-pVTZ
ABC
4.92635 1.01646 0.84261

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/aug-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
C11.32231.08251.08252.10312.1031
C21.32232.10312.10311.08251.0825
H31.08252.10311.84273.07272.4588
H41.08252.10311.84272.45883.0727
H52.10311.08253.07272.45881.8427
H62.10311.08252.45883.07271.8427

picture of Ethylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H5 121.665 C1 C2 H6 121.665
C2 C1 H3 121.665 C2 C1 H4 121.665
H3 C1 H4 116.670 H5 C2 H6 116.670
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/aug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.616      
2 C -0.616      
3 H 0.308      
4 H 0.308      
5 H 0.308      
6 H 0.308      


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 -15.619 0.000 0.000
y 0.000 -12.284 0.000
z 0.000 0.000 -12.224
Traceless
 xyz
x -3.366 0.000 0.000
y 0.000 1.638 0.000
z 0.000 0.000 1.728
Polar
3z2-r23.456
x2-y2-3.335
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.295 0.000 0.000
y 0.000 3.710 0.000
z 0.000 0.000 5.227


<r2> (average value of r2) Å2
<r2> 23.041
(<r2>)1/2 4.800