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All results from a given calculation for C2H4 (Ethylene)

using model chemistry: HF/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 HF/aug-cc-pVDZ
 hartrees
Energy at 0K-78.043710
Energy at 298.15K-78.046961
HF Energy-78.043710
Nuclear repulsion energy33.519040
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 HF/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 3306 3010 0.00 186.43 0.13 0.23
2 Ag 1813 1651 0.00 61.30 0.03 0.06
3 Ag 1467 1335 0.00 57.85 0.22 0.36
4 Au 1123 1022 0.00 0.00 0.00 0.00
5 B1u 3284 2991 19.23 0.00 0.00 0.00
6 B1u 1574 1433 12.63 0.00 0.00 0.00
7 B2g 1094 996 0.00 8.47 0.75 0.86
8 B2u 3394 3091 27.24 0.00 0.00 0.00
9 B2u 883 804 0.01 0.00 0.00 0.00
10 B3g 3365 3064 0.00 117.56 0.75 0.86
11 B3g 1329 1211 0.00 0.26 0.75 0.86
12 B3u 1081 984 119.64 0.00 0.00 0.00

Unscaled Zero Point Vibrational Energy (zpe) 11856.0 cm-1
Scaled (by 0.9106) Zero Point Vibrational Energy (zpe) 10796.1 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 HF/aug-cc-pVDZ
ABC
4.92478 1.01554 0.84193

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

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.662
C2 0.000 0.000 -0.662
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
C11.32381.08181.08182.10312.1031
C21.32382.10312.10311.08181.0818
H31.08182.10311.84293.07162.4573
H41.08182.10311.84292.45733.0716
H52.10311.08183.07162.45731.8429
H62.10311.08182.45733.07161.8429

picture of Ethylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H5 121.594 C1 C2 H6 121.594
C2 C1 H3 121.594 C2 C1 H4 121.594
H3 C1 H4 116.813 H5 C2 H6 116.813
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.493      
2 C 0.493      
3 H -0.247      
4 H -0.247      
5 H -0.247      
6 H -0.247      


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 -16.105 0.000 0.000
y 0.000 -12.423 0.000
z 0.000 0.000 -12.214
Traceless
 xyz
x -3.786 0.000 0.000
y 0.000 1.736 0.000
z 0.000 0.000 2.050
Polar
3z2-r24.100
x2-y2-3.681
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.306 0.000 0.000
y 0.000 3.529 0.000
z 0.000 0.000 5.382


<r2> (average value of r2) Å2
<r2> 23.174
(<r2>)1/2 4.814