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All results from a given calculation for C2H4 (Ethylene)

using model chemistry: PBEPBE/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 PBEPBE/aug-cc-pVTZ
 hartrees
Energy at 0K-78.500493
Energy at 298.15K-78.503632
HF Energy-78.500493
Nuclear repulsion energy33.257551
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/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 3072 3052 0.00 236.26 0.10 0.18
2 Ag 1639 1629 0.00 29.81 0.01 0.02
3 Ag 1338 1330 0.00 37.98 0.22 0.36
4 Au 1031 1025 0.00 0.00 0.00 0.00
5 B1u 3058 3039 16.98 0.00 0.00 0.00
6 B1u 1423 1414 9.36 0.00 0.00 0.00
7 B2g 935 929 0.00 2.14 0.75 0.86
8 B2u 3157 3137 19.73 0.00 0.00 0.00
9 B2u 802 796 0.14 0.00 0.00 0.00
10 B3g 3129 3109 0.00 130.80 0.75 0.86
11 B3g 1199 1191 0.00 0.03 0.75 0.86
12 B3u 939 933 93.99 0.00 0.00 0.00

Unscaled Zero Point Vibrational Energy (zpe) 10862.0 cm-1
Scaled (by 0.9935) Zero Point Vibrational Energy (zpe) 10791.4 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/aug-cc-pVTZ
ABC
4.85162 0.99990 0.82904

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

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.666
C2 0.000 0.000 -0.666
H3 0.000 0.928 1.240
H4 0.000 -0.928 1.240
H5 0.000 -0.928 -1.240
H6 0.000 0.928 -1.240

Atom - Atom Distances (Å)
  C1 C2 H3 H4 H5 H6
C11.33301.09121.09122.12052.1205
C21.33302.12052.12051.09121.0912
H31.09122.12051.85683.09802.4800
H41.09122.12051.85682.48003.0980
H52.12051.09123.09802.48001.8568
H62.12051.09122.48003.09801.8568

picture of Ethylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H5 121.705 C1 C2 H6 121.705
C2 C1 H3 121.705 C2 C1 H4 121.705
H3 C1 H4 116.590 H5 C2 H6 116.590
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/aug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.626      
2 C -0.626      
3 H 0.313      
4 H 0.313      
5 H 0.313      
6 H 0.313      


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 -15.748 0.000 0.000
y 0.000 -12.496 0.000
z 0.000 0.000 -12.490
Traceless
 xyz
x -3.255 0.000 0.000
y 0.000 1.624 0.000
z 0.000 0.000 1.632
Polar
3z2-r23.263
x2-y2-3.253
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.425 0.000 0.000
y 0.000 3.902 0.000
z 0.000 0.000 5.408


<r2> (average value of r2) Å2
<r2> 23.409
(<r2>)1/2 4.838