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

using model chemistry: B3PW91/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B3PW91/6-311G*
 hartrees
Energy at 0K-153.765286
Energy at 298.15K 
HF Energy-153.765286
Nuclear repulsion energy75.469003
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 B3PW91/6-311G*
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 3097 2981 14.60      
2 A1 1555 1497 3.42      
3 A1 1321 1272 15.47      
4 A1 1154 1111 0.03      
5 A1 915 881 71.70      
6 A2 3172 3054 0.00      
7 A2 1182 1138 0.00      
8 A2 1051 1012 0.00      
9 B1 3188 3069 69.42      
10 B1 1182 1138 3.77      
11 B1 823 793 0.01      
12 B2 3088 2973 50.16      
13 B2 1512 1456 0.02      
14 B2 1137 1094 2.78      
15 B2 876 843 13.01      

Unscaled Zero Point Vibrational Energy (zpe) 12625.7 cm-1
Scaled (by 0.9627) Zero Point Vibrational Energy (zpe) 12154.8 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 B3PW91/6-311G*
ABC
0.86509 0.74085 0.47613

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-311G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.849
C2 0.000 0.731 -0.370
C3 0.000 -0.731 -0.370
H4 0.921 1.269 -0.588
H5 -0.921 1.269 -0.588
H6 -0.921 -1.269 -0.588
H7 0.921 -1.269 -0.588

Atom - Atom Distances (Å)
  O1 C2 C3 H4 H5 H6 H7
O11.42101.42102.12672.12672.12672.1267
C21.42101.46291.08851.08852.21342.2134
C31.42101.46292.21342.21341.08851.0885
H42.12671.08852.21341.84153.13652.5390
H52.12671.08852.21341.84152.53903.1365
H62.12672.21341.08853.13652.53901.8415
H72.12672.21341.08852.53903.13651.8415

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 59.021 O1 C2 H4 115.229
O1 C2 H5 115.229 O1 C3 C2 59.021
O1 C3 H6 115.229 O1 C3 H7 115.229
C2 O1 C3 61.958 C2 C3 H6 119.623
C2 C3 H7 119.623 C3 C2 H4 119.623
C3 C2 H5 119.623 H4 C2 H5 115.534
H6 C3 H7 115.534
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.286      
2 C -0.296      
3 C -0.296      
4 H 0.219      
5 H 0.219      
6 H 0.219      
7 H 0.219      


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 -1.948 1.948
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.126 0.000 0.000
y 0.000 -16.347 0.000
z 0.000 0.000 -20.599
Traceless
 xyz
x 1.347 0.000 0.000
y 0.000 2.516 0.000
z 0.000 0.000 -3.862
Polar
3z2-r2-7.725
x2-y2-0.779
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.342 0.000 0.000
y 0.000 4.336 0.000
z 0.000 0.000 2.888


<r2> (average value of r2) Å2
<r2> 36.299
(<r2>)1/2 6.025