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All results from a given calculation for C2H4 (Ethylene)

using model chemistry: PBEPBEultrafine/aug-cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D2H 1Ag
Energy calculated at PBEPBEultrafine/aug-cc-pVDZ
 hartrees
Energy at 0K-78.477987
Energy at 298.15K-78.481123
HF Energy-78.477987
Nuclear repulsion energy33.023382
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 PBEPBEultrafine/aug-cc-pVDZ
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 3083 3064 0.00 240.17 0.10 0.18
2 Ag 1638 1628 0.00 31.52 0.01 0.03
3 Ag 1331 1323 0.00 36.50 0.26 0.41
4 Au 1018 1012 0.00 0.00 0.00 0.00
5 B1u 3069 3050 16.70 0.00 0.00 0.00
6 B1u 1407 1399 9.09 0.00 0.00 0.00
7 B2g 939 934 0.00 2.19 0.75 0.86
8 B2u 3179 3160 21.57 0.00 0.00 0.00
9 B2u 797 792 0.12 0.00 0.00 0.00
10 B3g 3151 3132 0.00 131.31 0.75 0.86
11 B3g 1186 1179 0.00 0.05 0.75 0.86
12 B3u 946 940 96.13 0.00 0.00 0.00

Unscaled Zero Point Vibrational Energy (zpe) 10871.9 cm-1
Scaled (by 0.9939) Zero Point Vibrational Energy (zpe) 10805.6 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 PBEPBEultrafine/aug-cc-pVDZ
ABC
4.78117 0.98602 0.81744

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

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.671
C2 0.000 0.000 -0.671
H3 0.000 0.935 1.248
H4 0.000 -0.935 1.248
H5 0.000 -0.935 -1.248
H6 0.000 0.935 -1.248

Atom - Atom Distances (Å)
  C1 C2 H3 H4 H5 H6
C11.34251.09901.09902.13532.1353
C21.34252.13532.13531.09901.0990
H31.09902.13531.87043.11972.4968
H41.09902.13531.87042.49683.1197
H52.13531.09903.11972.49681.8704
H62.13531.09902.49683.11971.8704

picture of Ethylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H5 121.681 C1 C2 H6 121.681
C2 C1 H3 121.681 C2 C1 H4 121.681
H3 C1 H4 116.638 H5 C2 H6 116.638
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBEultrafine/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.817      
2 C 0.817      
3 H -0.409      
4 H -0.409      
5 H -0.409      
6 H -0.409      


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 -15.801 0.000 0.000
y 0.000 -12.527 0.000
z 0.000 0.000 -12.573
Traceless
 xyz
x -3.251 0.000 0.000
y 0.000 1.660 0.000
z 0.000 0.000 1.591
Polar
3z2-r23.182
x2-y2-3.274
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.396 0.000 0.000
y 0.000 3.880 0.000
z 0.000 0.000 5.497


<r2> (average value of r2) Å2
<r2> 23.655
(<r2>)1/2 4.864