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

using model chemistry: wB97X-D/CEP-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at wB97X-D/CEP-31G*
 hartrees
Energy at 0K-29.635704
Energy at 298.15K 
HF Energy-29.635704
Nuclear repulsion energy42.184304
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 wB97X-D/CEP-31G*
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 3138 3138 22.35 228.34 0.10 0.18
2 A1 1565 1565 4.71 7.52 0.17 0.29
3 A1 1327 1327 11.84 34.59 0.20 0.33
4 A1 1169 1169 0.45 1.90 0.42 0.59
5 A1 930 930 84.91 11.54 0.75 0.86
6 A2 3210 3210 0.00 107.36 0.75 0.86
7 A2 1166 1166 0.00 2.73 0.75 0.86
8 A2 1046 1046 0.00 0.18 0.75 0.86
9 B1 3228 3228 97.67 17.86 0.75 0.86
10 B1 1174 1174 3.06 10.87 0.75 0.86
11 B1 814 814 0.53 7.13 0.75 0.86
12 B2 3129 3129 72.81 12.68 0.75 0.86
13 B2 1508 1508 0.21 5.65 0.75 0.86
14 B2 1139 1139 1.99 0.94 0.75 0.86
15 B2 914 914 10.09 9.43 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 12728.4 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 12728.4 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 wB97X-D/CEP-31G*
ABC
0.85645 0.72094 0.46676

See section I.F.4 to change rotational constant units
Geometric Data calculated at wB97X-D/CEP-31G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.852
C2 0.000 0.744 -0.372
C3 0.000 -0.744 -0.372
H4 0.928 1.283 -0.589
H5 -0.928 1.283 -0.589
H6 -0.928 -1.283 -0.589
H7 0.928 -1.283 -0.589

Atom - Atom Distances (Å)
  O1 C2 C3 H4 H5 H6 H7
O11.43221.43222.14132.14132.14132.1413
C21.43221.48711.09561.09562.23992.2399
C31.43221.48712.23992.23991.09561.0956
H42.14131.09562.23991.85693.16802.5668
H52.14131.09562.23991.85692.56683.1680
H62.14132.23991.09563.16802.56681.8569
H72.14132.23991.09562.56683.16801.8569

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 58.724 O1 C2 H4 115.146
O1 C2 H5 115.146 O1 C3 C2 58.724
O1 C3 H6 115.146 O1 C3 H7 115.146
C2 O1 C3 62.552 C2 C3 H6 119.520
C2 C3 H7 119.520 C3 C2 H4 119.520
C3 C2 H5 119.520 H4 C2 H5 115.857
H6 C3 H7 115.857
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at wB97X-D/CEP-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.208      
2 C -0.247      
3 C -0.247      
4 H 0.175      
5 H 0.175      
6 H 0.175      
7 H 0.175      


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 -2.120 2.120
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.701 0.000 0.000
y 0.000 -15.938 0.000
z 0.000 0.000 -20.515
Traceless
 xyz
x 1.525 0.000 0.000
y 0.000 2.670 0.000
z 0.000 0.000 -4.195
Polar
3z2-r2-8.391
x2-y2-0.763
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.913 0.000 0.000
y 0.000 4.313 0.000
z 0.000 0.000 2.808


<r2> (average value of r2) Å2
<r2> 32.375
(<r2>)1/2 5.690