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

using model chemistry: B3PW91/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B3PW91/6-31G*
 hartrees
Energy at 0K-153.730370
Energy at 298.15K 
HF Energy-153.730370
Nuclear repulsion energy75.346026
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 B3PW91/6-31G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A1 3119 2984 12.77      
2 A1 1572 1504 4.16      
3 A1 1327 1270 12.97      
4 A1 1168 1118 0.06      
5 A1 924 884 60.30      
6 A2 3191 3053 0.00      
7 A2 1187 1135 0.00      
8 A2 1048 1003 0.00      
9 B1 3207 3068 61.64      
10 B1 1179 1128 2.54      
11 B1 824 788 0.05      
12 B2 3110 2975 41.58      
13 B2 1527 1461 0.66      
14 B2 1146 1096 2.27      
15 B2 891 853 13.56      

Unscaled Zero Point Vibrational Energy (zpe) 12709.6 cm-1
Scaled (by 0.9567) Zero Point Vibrational Energy (zpe) 12159.3 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 B3PW91/6-31G*
ABC
0.86233 0.73847 0.47439

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-31G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.850
C2 0.000 0.733 -0.369
C3 0.000 -0.733 -0.369
H4 0.921 1.272 -0.592
H5 -0.921 1.272 -0.592
H6 -0.921 -1.272 -0.592
H7 0.921 -1.272 -0.592

Atom - Atom Distances (Å)
  O1 C2 C3 H4 H5 H6 H7
O11.42281.42282.13272.13272.13272.1327
C21.42281.46531.09061.09062.21762.2176
C31.42281.46532.21762.21761.09061.0906
H42.13271.09062.21761.84233.14132.5444
H52.13271.09062.21761.84232.54443.1413
H62.13272.21761.09063.14132.54441.8423
H72.13272.21761.09062.54443.14131.8423

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 59.007 O1 C2 H4 115.468
O1 C2 H5 115.468 O1 C3 C2 59.007
O1 C3 H6 115.468 O1 C3 H7 115.468
C2 O1 C3 61.986 C2 C3 H6 119.652
C2 C3 H7 119.652 C3 C2 H4 119.652
C3 C2 H5 119.652 H4 C2 H5 115.271
H6 C3 H7 115.271
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.421      
2 C -0.140      
3 C -0.140      
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 -1.946 1.946
CHELPG        
AIM        
ESP 0.023 0.000 -1.993 1.993


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.078 0.000 0.000
y 0.000 -16.194 0.000
z 0.000 0.000 -20.277
Traceless
 xyz
x 1.157 0.000 0.000
y 0.000 2.484 0.000
z 0.000 0.000 -3.641
Polar
3z2-r2-7.282
x2-y2-0.884
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.282 0.000 0.000
y 0.000 4.189 0.000
z 0.000 0.000 2.669


<r2> (average value of r2) Å2
<r2> 36.283
(<r2>)1/2 6.024