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

using model chemistry: wB97X-D/3-21G*

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/3-21G*
 hartrees
Energy at 0K-152.878451
Energy at 298.15K 
HF Energy-152.878451
Nuclear repulsion energy73.492827
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/3-21G*
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 3165 2999 2.94 166.73 0.10 0.18
2 A1 1579 1497 0.00 6.00 0.75 0.86
3 A1 1245 1180 8.61 19.92 0.14 0.24
4 A1 1148 1089 9.95 5.31 0.36 0.53
5 A1 849 804 30.21 10.99 0.74 0.85
6 A2 3243 3074 0.00 96.38 0.75 0.86
7 A2 1205 1142 0.00 5.91 0.75 0.86
8 A2 1006 954 0.00 0.01 0.75 0.86
9 B1 3262 3092 34.25 12.85 0.75 0.86
10 B1 1128 1069 0.75 18.91 0.75 0.86
11 B1 855 811 0.00 10.83 0.75 0.86
12 B2 3153 2989 19.10 7.19 0.75 0.86
13 B2 1554 1473 0.19 5.92 0.75 0.86
14 B2 1148 1088 16.92 2.69 0.75 0.86
15 B2 815 772 5.05 8.55 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 12678.1 cm-1
Scaled (by 0.9478) Zero Point Vibrational Energy (zpe) 12016.3 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 wB97X-D/3-21G*
ABC
0.78711 0.72955 0.44728

See section I.F.4 to change rotational constant units
Geometric Data calculated at wB97X-D/3-21G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.898
C2 0.000 0.742 -0.392
C3 0.000 -0.742 -0.392
H4 0.921 1.267 -0.622
H5 -0.921 1.267 -0.622
H6 -0.921 -1.267 -0.622
H7 0.921 -1.267 -0.622

Atom - Atom Distances (Å)
  O1 C2 C3 H4 H5 H6 H7
O11.48791.48792.18252.18252.18252.1825
C21.48791.48401.08471.08472.22222.2222
C31.48791.48402.22222.22221.08471.0847
H42.18251.08472.22221.84143.13312.5348
H52.18251.08472.22221.84142.53483.1331
H62.18252.22221.08473.13312.53481.8414
H72.18252.22221.08472.53483.13311.8414

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 60.085 O1 C2 H4 115.171
O1 C2 H5 115.171 O1 C3 C2 60.085
O1 C3 H6 115.171 O1 C3 H7 115.171
C2 O1 C3 59.830 C2 C3 H6 118.969
C2 C3 H7 118.969 C3 C2 H4 118.969
C3 C2 H5 118.969 H4 C2 H5 116.163
H6 C3 H7 116.163
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at wB97X-D/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.443      
2 C -0.243      
3 C -0.243      
4 H 0.232      
5 H 0.232      
6 H 0.232      
7 H 0.232      


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 -2.393 2.393
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.018 0.000 0.000
y 0.000 -16.163 0.000
z 0.000 0.000 -20.731
Traceless
 xyz
x 1.429 0.000 0.000
y 0.000 2.712 0.000
z 0.000 0.000 -4.140
Polar
3z2-r2-8.281
x2-y2-0.855
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.923 0.000 0.000
y 0.000 4.007 0.000
z 0.000 0.000 2.461


<r2> (average value of r2) Å2
<r2> 37.484
(<r2>)1/2 6.122