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All results from a given calculation for C2H4O (Ethylene oxide)

using model chemistry: PBE1PBE/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at PBE1PBE/6-311G*
 hartrees
Energy at 0K-153.644665
Energy at 298.15K 
HF Energy-153.644665
Nuclear repulsion energy75.638480
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 PBE1PBE/6-311G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A1 3114 2985 13.92 210.08 0.10 0.18
2 A1 1562 1497 3.80 1.67 0.58 0.74
3 A1 1334 1279 15.90 25.17 0.17 0.28
4 A1 1161 1113 0.11 0.68 0.68 0.81
5 A1 930 891 72.50 10.92 0.73 0.85
6 A2 3191 3058 0.00 115.35 0.75 0.86
7 A2 1186 1137 0.00 2.96 0.75 0.86
8 A2 1057 1013 0.00 0.14 0.75 0.86
9 B1 3207 3073 66.58 17.02 0.75 0.86
10 B1 1189 1140 4.01 11.55 0.75 0.86
11 B1 825 791 0.01 6.69 0.75 0.86
12 B2 3104 2976 47.44 10.37 0.75 0.86
13 B2 1515 1452 0.00 6.23 0.75 0.86
14 B2 1141 1094 2.69 2.32 0.75 0.86
15 B2 897 860 13.20 3.64 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 12705.6 cm-1
Scaled (by 0.9585) Zero Point Vibrational Energy (zpe) 12178.3 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 PBE1PBE/6-311G*
ABC
0.87066 0.74276 0.47863

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBE1PBE/6-311G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.845
C2 0.000 0.730 -0.368
C3 0.000 -0.730 -0.368
H4 0.921 1.268 -0.586
H5 -0.921 1.268 -0.586
H6 -0.921 -1.268 -0.586
H7 0.921 -1.268 -0.586

Atom - Atom Distances (Å)
  O1 C2 C3 H4 H5 H6 H7
O11.41621.41622.12242.12242.12242.1224
C21.41621.46061.08831.08832.21072.2107
C31.41621.46062.21072.21071.08831.0883
H42.12241.08832.21071.84173.13352.5351
H52.12241.08832.21071.84172.53513.1335
H62.12242.21071.08833.13352.53511.8417
H72.12242.21071.08832.53513.13351.8417

picture of Ethylene oxide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 C3 58.956 O1 C2 H4 115.246
O1 C2 H5 115.246 O1 C3 C2 58.956
O1 C3 H6 115.246 O1 C3 H7 115.246
C2 O1 C3 62.087 C2 C3 H6 119.582
C2 C3 H7 119.582 C3 C2 H4 119.582
C3 C2 H5 119.582 H4 C2 H5 115.597
H6 C3 H7 115.597
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBE1PBE/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.280      
2 C -0.305      
3 C -0.305      
4 H 0.222      
5 H 0.222      
6 H 0.222      
7 H 0.222      


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 -1.927 1.927
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.153 0.000 0.000
y 0.000 -16.385 0.000
z 0.000 0.000 -20.621
Traceless
 xyz
x 1.350 0.000 0.000
y 0.000 2.502 0.000
z 0.000 0.000 -3.852
Polar
3z2-r2-7.704
x2-y2-0.768
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.343 0.000 0.000
y 0.000 4.319 0.000
z 0.000 0.000 2.865


<r2> (average value of r2) Å2
<r2> 36.212
(<r2>)1/2 6.018